Coating systems SN 274-2 Requirements
Transcript of Coating systems SN 274-2 Requirements
October 2017
Coating systems
Requirements SN 274-2
ICS 87.040 Supersedes SN 274-2:2016-05
Table of contents Page
1 Scope ............................................................................................................................................................. 1
2 Normative references ..................................................................................................................................... 2
3 Terms and definitions ..................................................................................................................................... 2
4 Basic specifications ....................................................................................................................................... 2
5 Requirements ................................................................................................................................................. 3
5.1 Coating systems ............................................................................................................................................... 3
5.1.1 Basic specifications .......................................................................................................................................... 3
5.1.2 Permanent corrosion protection ......................................................................................................................... 3
5.1.3 Permanent anti-slip corrosion protection ............................................................................................................. 5
5.1.4 Temporary corrosion protection ......................................................................................................................... 6
5.2 Coater ............................................................................................................................................................. 7
5.3 Coating material producer ................................................................................................................................. 8
6 Examination specifications ............................................................................................................................. 9
6.1 Laboratory testing ............................................................................................................................................. 9
6.1.1 Basic specifications .......................................................................................................................................... 9
6.1.2 Permanent corrosion protection ......................................................................................................................... 9
6.1.3 Temporary corrosion protection ......................................................................................................................... 9
6.2 In-process examination by the coater ................................................................................................................. 9
6.2.1 Permanent corrosion protection ......................................................................................................................... 9
6.2.2 Temporary corrosion protection ....................................................................................................................... 10
6.3 Acceptance inspection of the finished coat ........................................................................................................ 10
6.3.1 Basic specifications ........................................................................................................................................ 10
6.3.2 Permanent corrosion protection ....................................................................................................................... 10
6.3.3 Temporary corrosion protection ....................................................................................................................... 10
Annex A (normative) - Colors used in the coating systems....................................................................................... 11
Annex B (informative) - Data of the coating material producer .................................................................................. 12
Annex C (normative) - Record of in-process supervision by the coater .................................................................... 13
Annex D (normative) - Coat acceptance examination records ................................................................................... 14
Annex E (informative) - Explanation of binder short designations ............................................................................. 16
Annex F (informative) - Juxtaposition of coating system designations ..................................................................... 17
Amendments .......................................................................................................................................................... 18
1 Scope This company standard specifies for SMS group the requirements made on the coating systems (CS) for temporary and permanent corrosion protection of components in steel, cast steel and cast iron, on coaters and coating material producers, and the examination specifications.
Number of pages: 18
Edited by: SMS group Standards Office
© SMS group GmbH 2017 "The present document is protected by copyright. The reproduction, distribution and utilization of this document
as well as the disclosure of its content to others are allowed in connection with SMS group projects and products. Any violations will be prosecuted under criminal law and will result in an obligation to pay damages.
All rights reserved.”
Page 2 SN 274-2:2017-10
2 Normative references
The following documents are required for the application of this standard. Dated references refer only to the edition of the date indicated. Undated references refer to the most recent edition of the respective document inclusive of all revisions.
SN 200-1 Manufacturing instructions; Requirements and principles
SN 200-7 Manufacturing instructions; Corrosion protection
SN 274-1 Coating systems, Terms, designation composition, selection and indications in the manufacturing documents
DIN EN 59 Glass-fibre reinforced plastics - Measurement of hardness by means of a Barcol
impressor
DIN EN ISO 2178 Non-magnetic coatings on magnetic substrates – Measurement of coating thickness -
Magnetic method
DIN EN ISO 2360 Non-conductive coatings on non-magnetic electrically conductive basis materials –
Measurement of coating thickness - Amplitude-sensitive eddy current method
DIN EN ISO 2409 Paints and varnishes - Cross-cut test
DIN EN ISO 2808 Paints and varnishes - Determination of film thickness
DIN EN ISO 2812-1 Paints and varnishes - Determination of resistance to liquids - Part 1: Immersion in liquids
other than water
DIN EN ISO 2812-2 Paints and varnishes - Determination of resistance to liquids - Part 2: Water immersion
method
DIN EN ISO 3882 Metallic and other inorganic coatings - Review of methods of measurement of thickness
DIN EN ISO 4624 Paints and varnishes - Pull-off test for adhesion
DIN EN ISO 4625-1 Binders for paints and varnishes - Determination of softening point - Part 1: Ring-and-ball
method
DIN EN ISO 6270-2 Paints and varnishes - Determination of resistance to humidity - Part 2: Procedure for
exposing test specimens in condensation water atmospheres
DIN EN ISO 6272-2 Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 2: Falling-weight
test, small-area indenter
DIN EN ISO 8503-2 Preparation of steel substrates before application of paints and related products - Surface
roughness characteristics of blast-cleaned steel substrates - Part 2: Method for the
grading of surface profile of abrasive blast-cleaned steel - Comparator procedure
DIN EN ISO 9227 Corrosion tests in artificial atmospheres - Salt spray tests
DIN EN ISO 12944-4 Paints and varnishes - Corrosion protection of steel structures by protective paint systems
- Part 4: Types of surface and surface preparation
ISO 6743-8 Lubricants, industrial oils and related products (class L); Classification - Part 8: Family R (temporary protection against corrosion)
Directive 1999/13/EC Limitation of emissions of volatile organic compounds due to the use of organic solvents in certain activities and installations
3 Terms and definitions
For the application of this document, the terms and definitions of SN 274-1 shall be used.
4 Basic specifications
The coating systems specified in the present standard shall be used for components made of steel, cast steel and cast iron and serve one or more of the following purposes: - Protection of the component against harmful influences of aggressive materials; - Protection of the contents of a vessel against contamination by soluble matter in the vessel material; - Achieving of a particular surface condition The coating systems specified herein are not suitable for components made of stainless steel.
Page 3 SN 274-2:2017-10
5 Requirements
5.1 Coating systems
5.1.1 Basic specifications
For permanent corrosion protection as in 5.1.2 and 5.1.3, adhesive strength with a cross-cut characteristic of 0-1 according to DIN EN ISO 2409:2013-06 after 0 load hours is required. For the respective assessment of the condensation water resistance according to DIN EN ISO 6270-2:2016-09 AT, salt spray test according to DIN EN ISO 9227:2017-07-NSS and resistance to chemicals according to DIN EN ISO 2812-1:2007-05 of the coating systems in 5.1.2 and 5.1.3, the values specified in the tables1 to 3 shall be complied with.
Table 1 – Assessment of condensation water resistance
Assessment Value
Visual assessment a)
0
Degree of blistering b)
S 0
Cross-cut c) 1-2
a) According to DIN EN ISO 4628-1 (0 best value, 5 worst value)
b) According to DIN EN ISO 4628-2 (S 0 best value, S 5 worst value)
c) According to DIN EN ISO 2409 (0 best value, 5 worst value)
Table 2 – Assessment of salt spray test
Assessment Value
Degree of rusting a)
Ri 0-1
Degree of blistering b)
S 0
Cross-cut c) 1-2
Delamination d)
1 mm a)
According to DIN EN ISO 4628-3 (Ri 0 best value, Ri 5 worst value) b)
According to DIN EN ISO 4628-2 (S 0 best value, S 5 worst value) c)
According to DIN EN ISO 2409 (0 best value, 5 worst value) d)
According to DIN EN ISO 4628-8 (partial scraping off with knife)
Table 3 – Assessment of resistance to chemicals
Assessment Value
Degree of blistering a)
S 0
Cross-cut b)
1-2 a)
According to DIN EN ISO 4628-2 (S 0 best value, S 5 worst value) b)
According to DIN EN ISO 2409 (0 best value, 5 worst value)
5.1.2 Permanent corrosion protection
Tables 4 to 7 specify the requirements made on the coating systems (CS) for permanent corrosion protection.
Table 4 – Requirements on the CS for permanent corrosion protection (resistance to water)
Coating system (CS)
Te
mp
era
ture
res
ista
nc
e
Co
nd
en
sati
on
wate
r re
sis
tan
ce
AT
Sa
lt s
pra
y
tes
t
Explanation on the
coating system
°C h a)
h b)
P.I.W.1.+120
Up to +120
120 240
- Permanent corrosion protection (P), - No climatic influences (I), - Loading through short-time influence of water on the
component surface (W.1.), - Ambient temperature up to +120 °C (+120)
P.A.W.1.+120
480 720
- Permanent corrosion protection (P), - Full climatic influences (A), - Loading through short-time influence of water on the
component surface (W.1.), - Ambient temperature up to +120 °C (+120)
P.I.W.3.+40 Up to +40
- Permanent corrosion protection (P), - No climatic influences (I), - Loading through permanent influence of water for an unlimited
duration (W.3) - Ambient temperature up to +40 °C (+40)
a) According to DIN EN ISO 6270-2, AT = alternating condensation-water atmosphere with changing air temperature
b) According to DIN EN ISO 9227
Page 4 SN 274-2:2017-10
Table 5 – Requirements on the CS for permanent corrosion protection (resistance to chemicals in general)
Coating system (CS)
Te
mp
era
ture
res
ista
nc
e
Co
nd
en
sati
on
wate
r
res
ista
nc
e
AT
Re
sis
tan
ce
to
ch
em
ica
ls
Sa
lt s
pra
y
tes
t
Explanation on the
coating system
°C h a)
h b) c)
h d)
P.I.O.2.+120 Up
to +120
120 168 240
- Permanent corrosion protection (P), - No climatic influences (I), - Loading through permanent or frequent influence of organic
chemicals (e.g. mineral oils, aromatic and aliphatic hydrocarbons, alcohols, phenols etc.) (O.2.),
- Ambient temperature up to +120°C (+120)
P.I.A.2.+150 Up
to +150
480 168 720
- Permanent corrosion protection (P), - No climatic influences (I), - Loading through permanent or frequent influence of Inorganic
chemicals (e.g. inorganic, oxidizing and non-oxidizing acids, bases, salts etc.) (A.2.)
- Ambient temperature up to +150 °C (+150) a)
According to DIN EN ISO 6270-2, AT = alternating condensation-water atmosphere with changing air temperature b)
According to DIN EN ISO 2812-1 c)
The chemicals used (oils, greases, acids, emulsions etc.) can be found in the manufacturing documents. d)
According to DIN EN ISO 9227
Table 6 – Requirements on the CS for permanent corrosion protection (resistance to mineral oil)
Coating system (CS)
Te
mp
era
ture
res
ista
nc
e
Co
nd
en
sati
on
wate
r
res
ista
nc
e
AT
Res
ista
nc
e t
o
ch
em
ica
ls
Sa
lt s
pra
y
tes
t Explanation on the
coating system
°C
P.I.O.3.+80 Up to +80
168 720
- Permanent corrosion protection (P), - No climatic influences (I), - Loading through permanently hot mineral oil (O.3.), - Ambient temperature up to +80 °C (+80)
P.I.O.3.+100 Up to +100
- Permanent corrosion protection (P), - No climatic influences (I), - Loading through permanently hot mineral oil (O.3.), - Ambient temperature up to +100 °C (+100)
P.I.O.3.+150 Up to +150
- Permanent corrosion protection (P), - No climatic influences (I), - Loading through permanently hot mineral oil (O.3.), - Ambient temperature up to +150 °C (+150)
a) According to DIN EN ISO 6270-2, AT = alternating condensation-water atmosphere with changing air temperature
b) According to DIN EN ISO 2812-1
c) According to DIN EN ISO 9227
Page 5 SN 274-2:2017-10
Table 7 – Requirements on the CS for permanent corrosion protection (resistance to heat)
Coating system (CS)
Te
mp
era
ture
res
ista
nc
e
Co
nd
en
sati
on
wate
r
res
ista
nc
e
AT
Re
sis
tan
ce
to
ch
em
ica
ls
Sa
lt s
pra
y
tes
t Explanation on the
coating system
°C
P.I.K.0.+400
Up to +400
120
-
240
- Permanent corrosion protection (P), - No climatic influences (I), - No influencing substances on the component surface (K.0.) - Loading through elevated ambient temperature up to +400 °C
(+400)
P.A.K.0.+400 120 240
- Permanent corrosion protection (P), - Full climatic influences (A), - No influencing substances on the component surface (K.0.) - Loading through elevated ambient temperature up to 400 °C
(+400)
P.I.K.0.+600
Up to +600
120 -
- Permanent corrosion protection (P), - No climatic influences (I), - No influencing substances on the component surface (K.0.) - Loading through very high ambient temperature up to +600 °C
(+600)
P.A.K.0.+600 120 -
- Permanent corrosion protection (P), - Full climatic influences (A), - No influencing substances on the component surface (K.0.) - Loading through very high ambient temperature up to +600 °C
(+600) a)
According to DIN EN ISO 6270-2, AT = alternating condensation-water atmosphere with changing air temperature b)
According to DIN EN ISO 2812-1 c)
According to DIN EN ISO 9227
5.1.3 Permanent anti-slip corrosion protection
Table 8 specifies the requirements made on the coating systems for permanent anti-slip corrosion protection.
Table 8 – Requirements on the CS for permanent anti-slip corrosion protection
Coating system (CS)
An
ti-s
lip
cla
ss a
)
Te
mp
era
ture
res
ista
nc
e
Co
nd
en
sati
on
wate
r
res
ista
nc
e
AT
Res
ista
nc
e t
o
ch
em
ica
ls
Sa
lt s
pra
y
tes
t Explanation on the
coating system
°C
PR.12.I.O.2.+100 R12 Up to
+100 120 - 240
- Permanent anti-slip corrosion protection (PR), - Anti-slip class (12.), - No climatic influences (I), - Loading through permanent or frequent influence of
organic chemicals (e.g. mineral oils, aromatic and aliphatic hydrocarbons, alcohols, phenols etc.) (O.2.),
- Ambient temperature up to +100 °C (+100) a)
According to DIN 51130 b)
According to DIN EN ISO 6270-2, AT = alternating condensation-water atmosphere with changing air temperature c)
According to DIN EN ISO 2812-1 d)
The chemicals used (oils, greases, acids, emulsions etc.) can be found in the manufacturing documents. e)
According to DIN EN ISO 9227
Page 6 SN 274-2:2017-10
5.1.4 Temporary corrosion protection
Table 9 specifies the requirements made on the coating systems for temporary corrosion protection.
Table 9 – Requirements on the CS for temporary corrosion protection
Coating system
(CS)
Te
mp
era
ture
res
ista
nc
e
Sa
lt s
pra
y
tes
t
Co
nd
en
sa
tio
n
wa
ter
res
ista
nc
e
CH
Explanation on the
coating system
°C
T.I.W.1- L.K.0.+40
Up to +40
- 460
- Temporary corrosion protection (T),
- No climatic influences (I), - Loading through short-time influence of water on the component surface
(e.g. splashes, fumes, condensation) (W.1),
- Limited climatic influence (L.), - No influence of substances/liquids on component surfaces.(K.0.), - Ambient temperature in indoor and outdoor storage up to +40 °C (+40).
T.I.W.1 - L.W.1.+40 150 500
- Temporary corrosion protection (T),
- No climatic influences (I), - Loading through short-time influence of water on the component surface
(e.g. splashes, fumes, condensation) (W.1),
- Limited climatic influence (L.), - Loading through short-time influence of water on the component surface
(W.1.), - Ambient temperature in indoor and outdoor storage up to +40 °C (+40).
T.I.W.2 - L.W.2.+40
960 2400
- Temporary corrosion protection (T),
- No climatic influences (I), - Loading through permanent or frequent influence of water on the
component surface (e.g. splashes, fumes, condensation) (W.2.),
- Limited climatic influence (L.), - Loading through permanent or frequent influence of water on the
component surface (W.2.), - Ambient temperature in indoor and outdoor storage up to +40 °C (+40).
T.I.W.2 - L.W.2.+90 Up to +90
- Temporary corrosion protection (T),
- No climatic influences (I), - Loading through permanent or frequent influence of water on the
component surface (e.g. splashes, fumes, condensation) (W.2.),
- Limited climatic influence (L.), - Loading through permanent or frequent influence of water on the
component surface (W.2.), - Ambient temperature in indoor and outdoor storage up to +90 °C (+90).
a) According to DIN EN ISO 9227
b) According to DIN EN ISO 6270-2, CH = constant condensation-water atmosphere
Page 7 SN 274-2:2017-10
5.2 Coater
Coating shall be made in compliance with the basic requirements specified in section 4 of SN 200-7:2016-05. The tables 10 to 15 state the surface preparation and the types of binders of the coating systems of the tables 3 to 8. Unless otherwise stated in the ordering documents, the colors of the individual coating systems shall follow the specifications made in Annex A (normative). All colors shall be the glossy type as defined in DIN EN ISO 2813. Upon request by SMS group, the coater shall carry out supervision of coating during production according to 6.2 and shall document such supervision in an examination record shown in Annex C (normative).
Coating materials for the coating systems as in tables 10 to 15 are shown in SN 274-2, Supplementary Sheet 1. The use of technically equivalent coating materials is allowed provided that the conformity with the requirements made on the coating systems according to 5.1 can be proven by the coating producer according to 5.3.
Table 10 – CS for permanent corrosion protection (resistance to water)
Coating system (CS)
Surface condition of
uncoated component
Prime coat Cover coat
Examples of application Type of binder
Type Type of binder
Type
P.I.W.1.+120 Sa 2 ½ -
var. EP
var. External coating of machine and structural steel components, pipe lines and vessels in steel in general (for general application in hot and cold rolling mills, strip processing lines, continuous casters and steelmaking plants)
EP AK
P.A.W.1.+120 Sa 2 ½, Be EP
var.
PUR
var. Sa 2 ½, Be, St3
AK AK
P.I.W.3.+40 Sa 2 ½, St3 EP var. EP var. Internal coating of vessels/tanks (water and compressed-air systems)
Table 11 – CS for permanent corrosion protection (resistance to chemicals in general)
Coating system (CS)
Surface condition of
uncoated component
Prime coat Cover coat
Examples of application Type of binder
Type Type of binder
Type
P.I.O.2.+120 Sa 2 ½, St3, Be
EP var. EP var.
External coats of machines or machine parts exposed to permanent or frequent influence of organic chemical fumes and/or chemical splashes (for cold, aluminum and special-steel rolling mills)
P.I.A.2.+150 Sa 2 ½, Be EP var. EP var.
External coating of machines or machine parts exposed to permanent or frequent influence of inorganic chemical fumes and/or splashes of chemicals (for pickling lines)
Table 12 – Coating systems for permanent corrosion protection (resistance to mineral oil)
Coating system (CS)
Surface condition of
uncoated component
Prime coat Cover coat
Examples of application Type of binder
Type Type of binder
Type
P.I.O.3.+80 Sa 2 ½, St3 EP
var. - - Internal coats of tanks (hydraulic systems) PUR
P.I.O.3.+100 Sa 2 ½, St3 PF var. - - Internal coats of tanks (centralized oil and oil-film systems)
P.I.O.3.+150
Sa 2 ½, St3, Sa3, Be EP var.
EP var.
Internal coating of e.g. gear housings and gear internals such as welded gearwheels and oil splash rings Be PUR
Page 8 SN 274-2:2017-10
Table 13 – Coating systems for permanent corrosion protection (resistance to heat)
Coating system (CS)
Surface condition of
uncoated component
Prime coat Intermediate
coat Cover coat
Examples of application Type of binder
Type Type of binder
Type Type of binder
Type
P.I.K.0.+400 Sa 2 ½, Be EPE Zn (R) - - SIL var.
External coats of machines or machine parts exposed to high temperatures (high-temperature areas in hot rolling mills, continuous casters etc.)
Sa 2 ½, ESI Zn (R) - - SIL var.
P.A.K.0.+400 Sa 2 ½, Be EPE Zn (R) - - SIL var.
Sa 2 ½, ESI Zn (R) - - SIL var.
P.I.K.0.+600 Sa 2 ½, - - - - SIL var. External coats of machines or machine parts exposed to high temperatures (areas of very high temperatures in continuous casters, steelmaking plants etc.)
P.A.K.0.+600 Sa 2 ½, - - - - SIL var.
Table 14 – Coating systems for permanent anti-slip corrosion protection
Coating system (CS)
Surface condition of
uncoated component
Prime coat Cover coat
Examples of application Type of binder
Type Type of binder
Type
PR.I.O.2.+100 Sa 2 ½ - - NBR var. Anti-slip coat for smooth plates (plate flooring)
Table 15 – Coating systems for temporary corrosion protection
Coating system (CS)
a)
Surface condition of
uncoated component
Classification acc. to ISO 6743-8
Temporary corrosion protection
Examples of application
T.I.W.1- L.K.0.+40
Sa3 b)
ISO-L RE
Preservation of internal and external component surfaces for intermediate storage
Application on all metallically bright surfaces for short-time shipment or storage
T.I.W.1 - L.W.1.+40 ISO-L RF
Preservation of internal component surfaces
Use for all metallically bright surfaces like gear internals, contact faces etc.
T.I.W.2 - L.W.2.+40 ISO-L RF Preservation of external component surfaces
Application on all metallically bright surfaces
T.I.W.2 - L.W.2.+90 ISO-L RM Preservation of internal component surfaces
Use for all metallically bright surfaces like gear internals etc. a)
For the explanation of the coating system and the juxtaposition with the previous designations of SN 200-7:2010-09, see Annex F (informative)
b) The indication of Sa3 in temporary corrosion protection refers to the features of the preparation grades according to DIN EN ISO 12944-4:1998-07 and not to the associated rust removal method Sa (blast cleaning).
5.3 Coating material producer
The coating materials to be used for the coating systems in this present company standard shall fulfill the requirements specified in tables 1 to 9 and fulfillment shall be proven either by experience data of the owner or the coating material producer, and/or by the results of laboratory tests according to 6.1. The following is considered to be experience data: - Laboratory tests with recorded and reproducible results corresponding to the specifications in 6.1; - Reference objects demonstrably provided with the coating system according to the present standard and whose suitability
is to be verified. The coating materials used for coating systems according to tables 4 to 6 and table 8 shall always be designed for a protective life M, those for coating systems according to table 7, for a protective life L according to DIN EN ISO 12944-5:2008-01. In addition, the coating material should be provided with a sufficient description based on the data listed in Annex B (informative). Unless otherwise stated in the ordering documents, the colors of the individual coating systems shall follow the specifications made in Annex A (normative). All colors shall be the glossy type as defined in DIN EN ISO 2813.
Page 9 SN 274-2:2017-10
6 Examination specifications
6.1 Laboratory tests by the coating material producer
6.1.1 Basic specifications
For the suitability tests of the coating materials, sample plates with the respective material shall be prepared for the laboratory tests upon agreement with the test laboratory. The dimensions of the sample plates are indicated in DIN EN 14879-2:2007-02, section 8.2.1. The identity of the materials shall be proven to the test laboratory by indication of the physicochemical characteristics. It is also possible to furnish individual proof to the laboratory by means of certified reference objects.
6.1.2 Permanent and permanent anti-slip corrosion protection
For verification of the suitability of coating materials for the coating systems according to 5.1.2 and 5.1.3, the following examinations shall always be carried out and proven: - Structure of the coating system (The color shall be visually examined by comparison with a color control chart (RAL, NCS etc.), the degree of gloss
shall be examined according to DIN EN ISO 2813. Position, thickness and homogeneity of the individual layers and the surface condition shall be determined. They
shall comply with the specified data of the coating material producer.) - Temperature resistance (permanent) - Hardness of coat over 1 mm according to DIN EN 59 (suitable hardness testing methods shall be agreed for coats of less than 1mm) - Adhesiveness on the basis of DIN EN ISO 4624, adhesives shall be selected as suitable for the coating material. For
coats ≤ 250 µm the cross-cut test according to DIN EN ISO 2409 can be agreed. The position of the parting plane shall be assessed according to DIN EN ISO 4625-1. The values specified in the tables 1 to 3 in section 5.1.1 shall be observed.
- Salt spray test according to DIN EN ISO 9227. The values specified in the tables 1 to 3 in section 5.1.1 shall be observed. The following extended suitability tests shall be made in addition depending on the requirement on the coating system of tables 3 to 7 and proof of the tests shall be furnished:
- Resistance to condensation water according to DIN EN ISO 6272-2. The values specified in the tables 1 to 3 in section 5.1.1 shall be observed.
- Resistance to chemicals according to DIN EN ISO 2812-1. The values specified in the tables 1 to 3 in section 5.1.1 shall be observed.
6.1.3 Temporary corrosion protection
For verification of the suitability of coating materials to be used for the coating systems according to 5.1.4, the following examinations shall always be carried out and proven: - Temperature resistance (permanently) - Salt spray test according to DIN EN ISO 9227 - Resistance to condensation water according to DIN EN ISO 6272-2.
6.2 Examinations to be made by the coater
6.2.1 Permanent and permanent anti-slip corrosion protection
6.2.1.1 Incoming inspection of the coating material
The coater shall carry out the incoming inspection of the coating materials as follows: - Examination of the package marking for conformity with the data in the manufacturing documents. - Visual examination of the color of the coating material.
6.2.1.2 Coating suitability of the component
Prior to coating, the coater shall examine the surface condition, surface cleanliness and roughness according to DIN EN ISO 12944-4 and/or DIN EN ISO 8503-2 for conformity with the specifications in the tables 10 to 14.
6.2.1.3 Ambient conditions
The coater shall examine the conformity with the necessary ambient conditions such as ambient temperature, material temperature, dew point, relative humidity etc. (as indicated by the coating material producer) throughout the entire duration of coating (i.e. from the beginning of the surface preparation to the end of the reaction time).
6.2.1.4 Coating method
The coater shall check, on the basis of the coating material producer’s specification, the conformity with the prescribed coating method including mixture ratios, processing time, pot life, post-treatment and the specified structure of the coat. 6.2.1.5 Individual layer thickness
Conformity with the individual layer thickness of a coat according to the specifications of the coating material producer shall be examined by means of wet film thickness measurement according to DIN EN ISO 3882 or dry film thickness in the case of ferro-magnetic substrates according to DIN EN ISO 2178, and in case of non-magnetic substrates by means of the eddy current method according to DIN EN ISO 2360.
Page 10 SN 274-2:2017-10
6.2.2 Temporary corrosion protection
6.2.2.1 Incoming inspection of the coating material
The coater shall carry out the incoming inspection of the coating materials as follows: - Examination of the package marking for conformity with the data in the manufacturing documents.
6.2.2.2 Coating suitability of the component
Prior to coating, the coater shall examine the surface condition, surface cleanliness and roughness according to DIN EN ISO 12944-4 and/or DIN EN ISO 8503-2 for conformity with the specifications in the table 15.
6.3 Acceptance inspection of the finished coat
6.3.1 Basic specifications
In individual cases, SMS group reserves the right of acceptance inspection of the coat, which includes the individual examinations specified in 6.3.2.1 and 6.3.3.1. The acceptance of the coat shall be documented in a coat acceptance inspection record as in Annex D (normative), section D.1. If destructive testing of the coat is agreed, such testing shall be carried out on sample plates prepared during manufacture according to sections 6.3.2.2 and 6.3.3.2. The acceptance of the coat shall be documented in a coat acceptance inspection record as in Annex D (normative), section D.2. 6.3.2 Permanent and anti-slip permanent corrosion protection
6.3.2.1 Acceptance inspection of the finished component
The following examinations shall be carried out on the finish-coated component: - Visual check of the surface condition of the coat (cracks, homogeneity, degree of gloss etc.). - Examination of the layer thickness of the coating system according to the specifications of the coating material producer by means of equipment for non-destructive testing as in DIN EN ISO 2808. - The coloring coats (prime, intermediate, cover coats) shall be determined by means of the scratching test. - The color shall be visually examined on the basis of the specifications in the manufacturing documents.
6.3.2.2 Acceptance inspection of sample plates
On sample plates, according to DIN EN 14879-2:2007-02, section 8.2.1, the examinations specified in 6.3.2.1 shall be carried out. In addition, the adhesive strength of the coat shall be examined preferably in the form of a pull-off test on the basis of DIN EN ISO 4624. For thin coats ≤ 250 µm, the cross-cut test according to DIN EN ISO 2409 can be agreed. The position of the parting plane shall be assessed according to DIN EN ISO 4625-1. The cross-cut characteristic of 0-1 according to DIN EN ISO 2409 after 0 load hours specified in section 5.1.1 shall be complied with. 6.3.3 Temporary corrosion protection
6.3.3.1 Acceptance inspection of the finished component
The following examinations shall be carried out on the finish-coated component: - Visual examination of the surface condition of the coat. - Examination of the layer thickness of the coating system according to the specifications of the coating material producer
by means of equipment for non-destructive testing as in DIN EN ISO 2808. 6.3.3.2 Acceptance inspection of sample plates
On sample plates the examinations specified in section 6.3.3.1 shall be carried out.
Page 11 SN 274-2:2017-10
Annex A (normative)
Colors of the coating systems (CS)
Table A.1 – Colors of the CS for permanent corrosion protection (resistance to water)
Coating system Color
P.A.W.1.+120 Prime coat Concrete grey RAL 7023
Cover coat Reseda green RAL 6011
P.I.W.3.+40
Prime coat Mouse grey RAL 7005 or red brown RAL 8012
Intermediate coat
Cover coat
Table A.2 – Colors of the CS for permanent corrosion protection (resistance to chemicals in general)
Coating system Color
PR.I.O.2.+100 Cover coat Jet black RAL 9005
P.I.O.2.+120 Prime coat Pebble grey RAL 7032
Cover coat Reseda green RAL 6011
P.I.A.2.+150
Prime coat Red brown RAL 8012
Intermediate coat
Cover coat Reseda green RAL 6011
Table A.3 – Colors of the CS for permanent corrosion protection (resistance to mineral oil)
Coating system Color
P.I.O.3.+80 Prime coat Pebble grey RAL 7032
Cover coat -
P.I.O.3.+100 Prime coat Silver grey RAL 7001
Cover coat -
P.I.O.3.+150 Prime coat Pebble grey RAL 7032
Cover coat Ivory RAL 1014
Table A.4 – Colors of the CS for permanent corrosion protection (resistance to heat)
Coating system Color
P.I.K.0.+400 Prime coat Dusty grey RAL 7037
Cover coat White aluminium RAL 9006
P.A.K.0.+400
Prime coat Dusty grey RAL 7037
Intermediate coat Oxide red RAL 3009
Cover coat White aluminium RAL 9006
P.I.K.0.+600 Cover coat White aluminium RAL 9006 or iron mica
P.A.K.0.+600 Cover coat White aluminium RAL 9006 or iron mica
Page 12 SN 274-2:2017-10
Annex B
(informative) Data of the coating material producer
Table B.1 – Data of the coating material producer
Coating material data
Binder
Solids content
Nonvolatile matter content
Viscosity, flow time
Density
Color
Mixture ratio
Gel time
Minimum durability and storage conditions
Hazard warnings (marking according to national regulations)
Processing data
Ambient conditions (e.g. ambient temperature, material temperature, dew point, relative humidity etc.)
Safety precautions for storage, processing and disposal
Surface preparation for the material to be coated (e.g. ferritic steel)
Mixing ratio and mixing method
Coating method (spraying, brushing etc.)
Pot life and pertaining temperature
Thermal post-treatment
Hardening time and pertaining temperature
Processing time (for coating in two or more phases)
Repairs
Package data
Coating material producer or supplier
Product designation, commercial name
Classification
Batch number
Production date
Minimum durability
Color
Storage conditions
Mass/volume
Page 13 SN 274-2:2017-10
Annex C (normative)
Record of in-process supervision by the coater
Test record
In-process supervision by the coater
Ordered by: Name of coater: Coating material:
Project definition: a) WBS element:
b)
Material No.: c) Coating system:
a) Previous designation: Codeword
b) Previous designation: Project No.
c) Previous designation: Drawing No.
1. Check before coating
1.1 Rust grade (DIN EN ISO 8501)
Initial condition of the surface A □ B □ C □ D □
1.2 Preparation grade
(DIN EN ISO 12944-4) Sa2 ½ □ Sa3 □ St2 □ St3 □ Be □
1.3 Degree of surface preparation P2
(DIN EN ISO 8501-3) Yes □ No □
1.4 Component surface Steel □ Cast steel □ Cast iron □
1.5 Roughness
(surface profile comparators DIN EN ISO 8503)
Grit □ Shot □ Fine □ Medium □ Coarse □
1.6 Check for contamination
(DIN EN ISO 8502)
Oil/grease □ Dust □
Chloride testing □ (only upon request by SMS group)
1.7 Examination of the coating material
Color □ Stirred, no skin formation □ Package durability □ Package marking □
1.8 Examination of ambient conditions
Dew point check □ Air temperature >3 °C, 3 °C above dew point <80% rel. humidity □ Component temperature min. +3 °C □ Surface accessibility □
2. Check during coating/between coating steps
2.1 Place of application Manuf. works □ Workshop □ Constr. site □ ______________□
2.2 Method of application Brush/roller □ Airless spraying □ Compr. air spraying □
2.3 Additional work Edge protection provided □ _____________□
2.4 Check of wet film thickness
(NSD) (DIN 2808)
Prime coat ____µm □ Intermediate coat ____µm □ Cover coat ____µm □
2.5 Examination of ambient conditions
Dew point check □ Air temperature >3 °C, 3 °C above dew point <80% rel. humidity □ Component temperature min. +3 °C □ Application conditions □
2.6 Further processing check
Drying time observed □ Retouching time observed □ Air humidity observed >50 % □ (hygroscopically hardening coat e.g. zinc-rich ethyl silicate prime coat)
Remarks on the examinations:
Objections Yes □ Refer to remarks
Repetition Yes □
Release Yes □
No □ No □ No □
Place of examination: Tester: Date: Supplier Date:
Page 14 SN 274-2:2017-10
Annex D (normative)
Coat acceptance examination records
D.1 Record of acceptance examination of the finished coat on the component
Test record
Acceptance examination of the finished coat on the component
Ordered by: Name of coater:
Project definition: a) WBS element:
b)
Material No.: c) Coating system:
a) Previous designation: Codeword
b) Previous designation: Project No.
c) Previous designation: Drawing No.
Acceptance examinations on the finished component
Check:
1. Visual check
Damage to coat
Results:
1. Visual check
No □ Yes □
Remarks:
2. Film thickness
2.1 Check of dry film thickness
Overall film thickness Reference value:______________µm
2. Film thickness
2.1 Check of dry film thickness
Overall film thickness Actual value:______________µm
Prime coat Reference value:______________µm
Intermediate coat Reference value:______________µm
Cover coat Reference value:______________µm
Prime coat d)
Actual value:______________µm
Intermediate coat d)
Actual value:______________µm
Cover coat d)
Actual value:______________µm
d) Values from in-process supervision
2.2 Correction value for dry film thickness (ISO 19840)
Fine (10 μm) □
Medium (25 μm) □
Coarse (40 μm) □
--
3. Examination for defects Test instrument: Test voltage: ______________ kV
--
Inspection results
Remarks on the examinations:
Objections Yes □ Refer to remarks
Repetition Yes
□ Release
Yes □ No □ No □ No □
Place of examination:
Tester: Date: Supplier Date:
Page 15 SN 274-2:2017-10
D.2 Record of acceptance examination of the finished coat on sample plates
Test report Acceptance examination of the finished coat on the sample plates
Ordered by: Name of coater:
Project definition: a) WBS element:
b)
Material No.: c) Coating system:
a) Previous designation: Codeword
b) Previous designation: Project No.
c) Previous designation: Drawing No.
Acceptance examinations on sample plates
Check:
1. Visual check
Damage to coat
Results:
1. Visual check
No □ Yes □
Remarks:
2. Film thickness
2.1 Check of dry film thickness
Overall film thickness Reference value:______________µm
2. Film thickness
2.1 Check of dry film thickness
Overall film thickness Actual value:______________µm
Prime coat Reference value:______________µm
Intermediate coat Reference value:______________µm
Cover coat Reference value:______________µm
Prime coat Actual value:______________µm
Intermediate coat Actual
value:______________µm
Cover coat Actual value:______________µm
2.2 Correction value for dry film thickness (ISO 19840)
Fine (10 μm) □
Medium (25 μm) □
Coarse (40 μm) □
--
3. Testing of Shore/Barcol hardness
Measuring instrument: __________________
Setpoint: _______________Shore A / Shore D / Barcol
3. Testing of Shore/Barcol hardness Actual value: ____________Shore A / Shore D / Barcol
4. Check of adhesiveness
Measuring instrument: __________________
Setpoint: __________________N/mm²
4. Check of adhesiveness Actual value: __________________N/mm²
5. Cross-cut test Cross-cut characteristic 0-1 according to DIN EN ISO 2409 after 0 load hours
5. Cross-cut test Actual value:______________
6. Examination for defects
Test instrument: Test voltage: ______________ kV
--
Inspection results
Remarks on the examinations:
Objections Yes □ Refer to remarks
Repetition Yes □
Release Yes □
No □ No □ No □
Place of examination: Tester: Date: Supplier Date:
Page 16 SN 274-2:2017-10
Annex E (informative)
Explanation of binder short designations
Table E.1 – Short designations according to DIN EN ISO 12944-5:2008-01
Short designation Meaning
1K One component
2K Two components
EP Epoxy resin
ESI Ethyl silicate
AK Alkyd resin
AY Acrylic resin
CR Chlorinated rubber
PF Phenolformaldehyde
PVC Polyvinyl chloride
PUR Polyurethane
Page 17 SN 274-2:2017-10
Annex F
(informative) Juxtaposition of coating system designations
The tables F.1 and F.2 show the juxtaposition of the previous designations according to SN 200-7:2010-09 and the new designations according to SN 274-1:2016-05.
Table F.1 – Permanent corrosion protection
Coating system SN 274-1:2016-05
Previous designation SN 200-7:2010-09
P.I.W.1.+120 SMS group standard
Oil-resistant, external component coat
P.A.W.1+120 SMS group standard
Oil-resistant, external component coat
P.I.K.0.+400 Heat-resistant
P.A.K.0.+400
P.I.A.2.+150 Resistant to chemicals
PR.I.O.2.+100 Plate flooring (anti-slip coated)
P.I.O.3.+150 Oil-resistant, internal component coat
P.I.O.3.+80 Tarponal (zinc dust paint)
P.I.O.3.+100 Copaphen Aluminium
P.I.W.3.+40 Inertol-Poxitar
Table F.2 – Temporary corrosion protection
Coating system SN 274-1:2016-05
Previous designation SN 200-7:2010-09
T.I.W.1- L.K.0.+40 External and internal preservation for intermediate storage, Tectyl 511-M
T.I.W.1 - L.W.1.+40 Internal preservation, Tectyl 502-C
Preservation of oil film bearings
T.I.W.2 - L.W.2.+40 External preservation, Tectyl 846
T.I.W.2 - L.W.2.+90 Internal preservation Tectyl 506-EH
Page 18 SN 274-2:2017-10
Amendments
Amendments made in comparison with SN 274-2:2016-05:
a) Editorial revision according to SN 104-4; b) Table 5: Chemical-resistance test duration of 168 hours added for coating system P.I.O.2.+120; c) Short designations of the coating systems added to the explanations of the coating system in the tables 4 to 9; d) Adding of reference to the assignment of the colors in Annex A (normative); e) Table 13: Adding of the binder types ESI and SIL for the coating systems P.I.K.0.+400 and P.A.K.0.+400;
f) Table A.2: Coating system P.I.O.3.+120 changed to P.I.O.2.+120, and system P.I.A.3.+150 changed to
P.I.A.2.+150; g) Table A.4: Iron mica added as color for the coating systems P.I.K.0 + 600 and P.A.K.0.+600.
Previous editions SN 274-2:2016-05 Translation
This English translation of SN 274-2:2017-10 appeared on 16.11.2017. No guarantee can be given in respect of this translation. In all cases the latest German version of this standard shall be taken as authoritative.