GUIDE TO AS/NZS 2312:2002 (amdt no.1 2004) - Wattyl to... · Protection of steel substrates is a...

GUIDE TO AS/NZS 2312:2002 (amdt no.1 2004)

Version 10, September 2014 of 17

INTRODUCTION Protection of steel substrates is a major part of the Australian construction scene. Avoidance of the many pit falls that exist in achieving this goal is of considerable concern to designers, construction engineers and applicators alike. AS/NZS 2312:2002 Guide to the Protection of Structural Steel Against Atmospheric Corrosion by the Use of Protective Coatings offers detailed assistance for all of the important aspects of this difficult problem. The Wattyl Industrial Coatings Guide to AS/NZS 2312 provides a summary of applicable coating systems with a guide to durability in the particular exposure environments nominated. It is assumed that readers of this guide have a working knowledge of AS/NZS 2312 and associated standards. For further assistance with system selection for a specific project please contact your local Wattyl Industrial Coatings Sales Representative or contact Valspar Customer Service on 132 101. INDEX ATMOSPHERIC ENVIRONMENTS .......................................................................................................................................................... 2

INTRODUCTION .......................................................................................................................................................................................... 2 ATMOSPHERIC CLASSIFICATIONS (APPLICABLE TO STEEL)................................................................................................................ 3

Category A: Very low....................................................................................................................................................... 3 Category B: Low .............................................................................................................................................................. 3 Category C: Medium ....................................................................................................................................................... 3 Category D: High ............................................................................................................................................................. 3 Category E: Very high ..................................................................................................................................................... 3 Category F: Inland Tropical ............................................................................................................................................ 4

OTHER ENVIRONMENTS ............................................................................................................................................................................ 4 ADVICE ON ATMOSPHERIC CORROSION OF STEEL IN AUSTRALASIAN CLIMATES........................................................................... 4

PAINT SYSTEMS FOR STEEL – ATMOSPHERIC EXPOSURE ................................................................................................................ 8 ACRYLIC – LATEX, SINGLE PACK .................................................................................................................................................................... 8 ACRYLIC – SOLVENT BORNE CATALYZED ACRYLIC, TWO PACK ........................................................................................................................... 9 ALKYD ........................................................................................................................................................................................................ 10 CHLORINATED RUBBER .......................................................................................................................................................................... 10 EPOXY –HIGH BUILD ................................................................................................................................................................................... 11 EPOXY –ULTRA HIGH BUILD ........................................................................................................................................................................ 11 EPOXY – PRIMER / FINISH GLOSS ................................................................................................................................................................ 12 EPOXY MASTIC – SURFACE TOLERANT ........................................................................................................................................................ 12 INORGANIC ZINC SILICATE ..................................................................................................................................................................... 13 POLYURETHANE – SOLVENT BORNE, TWO PACK .......................................................................................................................................... 13

PAINT SYSTEMS FOR BATCH GALVANISED COATINGS – ATMOSPHERIC EXPOSURE ................................................................... 14 RECOMMENDED SYSTEMS FOR NON-ATMOSPHERIC ENVIRONMENTS ......................................................................................... 15

POTABLE WATER IMMERSION ............................................................................................................................................................... 15 SEAWATER IMMERSION ......................................................................................................................................................................... 15 SEAWATER SPLASH ................................................................................................................................................................................ 15 BURIED IN SOIL ........................................................................................................................................................................................ 16 SEWERAGE ............................................................................................................................................................................................... 16 SEVERE INDUSTRIAL – ALKALINE SPLASH ................................................................................................................................................ 16 SEVERE INDUSTRIAL – SOLVENT IMMERSION ............................................................................................................................................ 16 HIGH TEMPERATURE ............................................................................................................................................................................... 17



ATMOSPHERIC ENVIRONMENTS INTRODUCTION This section classifies atmospheric zones in Australia and New Zealand which affect the corrosion of steel and the life of a coating system. When selecting an appropriate protective coating system, the overall atmospheric conditions in the location of the intended structure require consideration. A structure situated in an aggressive environment will require a much higher standard of corrosion protection than one in a benign environment. The environment can affect both the steel and the paint system. Of prime importance is the effect the environment has on the corrosion of steel. The major factors affecting atmospheric corrosion, and hence atmospheric corrosivity categories based on ISO 9223, are given in AS/NZS 2312:2002 Appendix B. The effect the environment has on the life of the paint system is also important. It should be appreciated that corrosive environments described do not necessarily affect coatings in the same way as they affect bare steel. Environments that would not be considered to be particularly corrosive to steel, such as hot dry climates with a high amount of ultraviolet (UV) radiation, can cause early breakdown of some coatings. Tropical environments, with high humidity, rainfall, and which promote mould and fungal growth, are far more aggressive to organic coatings than the corrosion rate would suggest. Furthermore, the colour of the paint may influence its performance in some environments. In addition to climatic effects, the local environmental effects (or microclimate) produced by the erection of a structure or installation of equipment need to be taken into account. Such on-site factors require additional consideration because a mildly corrosive atmosphere can be converted into an aggressive environment by microclimatic effects. A significant acceleration of corrosion rate can occur in the following circumstances:

a) at locations where the metal surface remains damp for an extended period, such as where surfaces are not freely drained or shaded from sunlight, and

b) on unwashed surfaces, i.e. surfaces exposed to atmospheric contaminants, notably coastal salts, but protected from cleansing rain.

Other microclimatic effects which may accelerate the corrosion of the substrate or the deterioration of its protective coating include acidic or alkaline fallout, industrial chemicals and solvents, airborne fertilisers and chemicals, prevailing winds which transport contamination, hot or cold surfaces exposed to abrasion and impact. These effects can outweigh those of the microclimatic zones described in AS/NZS 2312:2002 Clause 2.2. As a result of microclimatic effects it is very difficult, if not impossible, to predict accurately the aggressiveness of a given environment and a certain amount of educated judgement is required to assess its influence on the coating life.



ATMOSPHERIC CLASSIFICATIONS (APPLICABLE TO STEEL) Atmospheric environments are classified into the following five atmospheric corrosivity categories based on the corrosion rates of mild steel given in ISO 9223, plus one tropical category which is not determined by corrosion rate. Category A: Very low. Environments in this category are most commonly found inside heated or air conditioned buildings with clean atmospheres, such as most commercial buildings. They may also be found in semi-sheltered locations remote from marine or industrial influence and in heated or non-air conditioned buildings. The only external environments in Australia or New Zealand are some alpine regions although, generally these environments will extend into Category B. Category B: Low. Environments in this category include dry, rural areas as well as other regions remote from the coast or sources of pollution. Most areas of Australia and New Zealand beyond at least 50 kilometres from the sea are in this category, which can however, extend as close as 1 kilometre from seas that are relatively sheltered and quiet. Typical areas occur in arid and rural inland regions, most inland cities and towns such as Canberra, Ballarat, Toowoomba, Alice Springs and Hamilton (New Zealand) and suburbs of cities on sheltered bays, such as Melbourne, Hobart, Brisbane and Adelaide (except areas within 3 to 6 kilometres of the coast near Adelaide). Unheated or non-air-conditioned buildings where some condensation may occur, such as warehouses and sports halls, can be in this category. Proximity to the coast is an important factor. Category C: Medium. This category mainly covers coastal areas with low salinity. The extent of the effected area varies significantly with factors such as wind, topography and vegetation. Around sheltered areas, such as Port Phillip Bay, Category C extends beyond about 50 metres from the shoreline to a distance of about one kilometre inland. For a sheltered bay or gulf, such as near Adelaide, this category extends from the shoreline to about 3 to 6 kilometres inland. Along ocean front areas with breaking surf and significant salt spray, it extends from about 1 kilometre inland to between 10 to 50 kilometres inland, depending on the strength of prevailing winds and topography. Much of the metropolitan areas of Wollongong, Sydney, Newcastle, the Gold Coast, Auckland and Wellington are in this category. In South Australia, the whole of Yorke Peninsula falls within this or a more severe category, and in the south-east of the state, from Victor Harbor to the Victorian border, this category extends between 30 and 70 kilometres inland. Such regions are also found in urban and industrial areas with low pollution levels and although uncommon in Australia and New Zealand, exist for several kilometres around major industries, such as smelters and steelworks, and in the geothermal areas of New Zealand. Micro-environmental effects, such as those resulting from proximity to airports and sewage treatment works, may also place a site into this category. Interior environments with Category C corrosivity can occur in humid production rooms, such as food-processing plants, laundries, breweries, printing works and dairies. Category D: High. This category occurs mainly on the coast. Around sheltered bays, Category D extends up to 50 metres inland from the shoreline. In areas with rough seas and surf, it extends from about several hundred metres inland to about 1 kilometre inland. As with Categories B and C, the extent depends on winds, wave action and topography. Industrial regions with an aggressive atmosphere may also be in this category, but in Australia and New Zealand these are only likely to be found within 1.5 kilometres of the plant. This category extends inside the plant where it is best considered as a micro-environment. Damp, contaminated interior environments such as occur in swimming pool enclosures, dye works, paper manufacturers, foundries, smelters and chemical processing plants may also extend into this category. Category E: Very high. (E-I: Industrial E-M: Marine) This category is common offshore and on the beachfront in regions of rough seas and surf beaches. The region can extend inland for several hundred metres. (In some areas of Newcastle, for example, it extends more than half a kilometre from the coast). This category may also be found in aggressive industrial areas, where the environment may be acidic. For this reason, Category E is divided into Marine and Industrial for purposes of coating selection. Some of the damp and/or contaminated interior environments in Category D may occasionally extend into this category.



Category F: Inland Tropical. A tropical environment is found in coastal areas of north Queensland, Northern Territory, north-west Western Australia, Papua-New Guinea and the Pacific Islands, except where affected by salinity. Corrosivity in inland regions is generally low (similar to that of category B), but the aggressiveness of the environment to organic coatings means that special protection is required. If a site is considered to be in more than one category, for example an industry on the coast in a tropical region, then a selected coating should, if possible, be capable of resisting each of the environments. OTHER ENVIRONMENTS Steelwork may be immersed in water, buried in soil, or exposed to other environments not specifically defined in any of the above listed categories. Structures in such environments are subject to corrosion problems often of a completely different nature to atmospheric corrosion. Not only are different coating systems sometimes used, but a number of other corrosion prevention options, such as cathodic protection or selection of different materials should be considered. The selection of such prevention methods requires specialist advice. ADVICE ON ATMOSPHERIC CORROSION OF STEEL IN AUSTRALASIAN CLIMATES There are a large number of factors which influence atmospheric corrosivity but the three most important are:

a) time of wetness b) atmospheric chloride content, and c) atmospheric sulphur dioxide content.

Time of wetness is the length of time during which the metal surface is covered by a film of water which renders atmospheric corrosion possible. It is influenced by factors such as metal mass, orientation and pollution, and is quantified to sufficient accuracy by the number of hours per year that the relative humidity is above 80% for temperatures above 0°C. Airborne salinity and sulfur dioxide content are both powerful stimulants of atmospheric corrosion and their deposition rate in non-sheltered situations is directly proportional to their concentration in the atmosphere. Airborne salt has a major influence on corrosion rates; however, sulfur dioxide has been found to play only a minor role in the corrosion of steel in Australia and New Zealand and can be neglected except when occurring near recognised point sources. Rainfall also influences corrosion rates and has the effect of either stimulating or reducing corrosion, depending on the environment. In polluted atmospheres, the washing effect of the rain reduces corrosion, while in less polluted sites the situation is reversed and the corrosive action of rain is more important. Temperature can also have contradictory effects. Increasing temperature increases the rate of the corrosion reactions but, on the other hand, leads to more rapid evaporation, shortening the time of wetness and decreasing the corrosion rate. Unless specific corrosive chemicals are present, time of wetness, chloride and sulfur dioxide deposition are the most important factors influencing corrosion rates. If details of these factors are known, atmospheric corrosiveness can be estimated from the information in ISO 9223. However, there is some doubt as to whether such calculations can give an acceptable figure for corrosivity, especially in Australian and New Zealand. Furthermore, ISO 9223 allows estimation of corrosivity zone based on corrosion rates of other metals such as zinc. Evidence suggests that the corrosion rates of steel and zinc cannot be reliably related as suggested by ISO 9223, and as a result, zinc corrosion rates have not been used to define zones in AS/NZS 2312:2002. Only actual corrosion rate measurements of steel carried out in Australia and New Zealand have been used to define the corrosivity zones, extrapolating such results to other areas with similar climates and geography. Therefore, corrosivity zones described in AS/NZS 2312:2002 are not identical to ISO 9223, but they are closely based on them. The accurate measurement of corrosion rate with acceptable reproducibility is not easy. Because the factors which influence corrosion rate are variable from one year to the next, measurements made over different time periods can vary considerably. The month in which the panels are first exposed is important, as panels initially exposed in winter generally show higher corrosion rates than those initially exposed in summer. However, climatic factors, especially rainfall, can influence this significantly. The time over which the tests are taken is critical, as rates tend to drop off with time due to the protective nature of the rust which builds up. Panels exposed at an angle corrode at a different rate to panels exposed vertically, and panels made from copper-containing steel corrode at a slightly lower rate to panels made from ordinary mild steel. The total effect of these factors is that corrosion rate experiments carried out in different parts of the world, over different time periods, using different panels, cannot be compared unless all conditions are the same. The ISO 9223 system of dividing corrosivity into five categories simplifies matters somewhat, although lines between categories are, naturally, rather arbitrary.



Table 1 shows the corrosivity zones used in AS/NZS 2312:2002, their ISO 9223 equivalent, and the expected one-year corrosion rates of steel within each category.

TABLE 1 - CORROSIVITY CATEGORIES

Corrosivity categories

ISO 9223 Category

Corrosion rate for steel - µm/year

Typical exterior environment

Examples of interior environments

A: Very low C1 <1.3 Few alpine areas Offices, shops

B: Low C2 1.3 to 25 Arid/rural/urban Warehouses, sports halls

C: Medium C3 25 to 50 Coastal Food processing plants, breweries, dairies

D: High C4 50 to 80 Sea-shore (calm) Swimming pools, livestock, buildings

E: Very High C5 80 to 190 Sea-shore (surf)/offshore Plating shops, chemical plants

F: Inland Tropical - - Non-coastal tropics - NOTE: To convert corrosion rates expressed in grams per square metre per year to microns per year, divide by 7.9 (the

density of steel in g/cm2). Table 2 lists one-year corrosion rates for mild steel for a number of sites. Where exposure times were other than one year, or copper steel was used rather than mild steel, corrections have been made to convert the results to one year, mild steel rates. Where a number of figures are available for a given site, an average result has been quoted. It should be possible using this information to estimate the atmospheric classification of other sites. It is to be recognised that corrosion rates near the coast drop off rapidly with distance inland and a given suburb or town can be in one, two or even three corrosion zones depending on its proximity to the ocean. Furthermore, the effect of the sea varies according to locality. Around a sheltered bay, such as Port Phillip Bay, the marine influence (ISO Category 3) extends about 0.5 km inland, while along the New South Wales coast, for example, it may extend inland 20 km or more. Figure 1, based on work carried out by the CSIRO in Newcastle (New South Wales), Melbourne (Victoria) and Victor Harbor (South Australia), illustrates the impact of distance from the coast and particular locale on the corrosion rate of steel.



TABLE 2 - ONE YEAR CORROSION RATES FOR UNCOATED MILD STEEL AT VARIOUS LOCATIONS

Atmospheric classification Test site Corrosion rate - µm/yr

A: Very low Mt Buller (Vic) 1

B: Low Arthurs Pass (NZ) 6

Dubbo (NSW) 4

Newman (WA) 3

Toowoomba (Qld) 9

Adelaide: Woodville (SA) 15

Auckland: Parnell (NZ) 21

Brisbane: Hamilton (Qld) 22

Canberra: (ACT) 14

Hobart: City (Tas) 11

Melbourne: Clayton (Vic) 18

Perth: Bentley (WA) 19

Sydney: Ryde (NSW) 22

Wellington: Judgeford (NZ) 19

Whyalla (SA) 13

C: Medium Auckland: Harbour Bridge (NZ) 49

Geelong: North Shore (Vic) 27

Melbourne: Altone Beach (Vic) 35

Newcastle: City (NSW) 35

New Plymouth: Airport (NZ) 31

Perth: Kwinana (WA) 29

Port Kembla: Jetty (NSW) 45

Sydney: City (NSW) 32

D: High Greymouth (NZ) 64

Melbourne: Seaford Beach (Vic) 68

Newcastle: Boolaroo (NSW) 63

Port Pirie (SA) 74

E-M: Very high (marine) Cowley Beach (Qld) 142

Newcastle Beach (NSW) 194

F: Inland Tropical Goroka (P.N.G.) 4

Innisfail (Qld) - sheltered 17

- open 25

Port Moresby (PNG) 17

Rabaul (PNG) 13

Townsville (Qld) 15

Tully (Qld) 20

NOTE: 1. These corrosion rate figures do not take into account micro- or macro- environmental regions which may occur within each location.

NOTE: 2. For further information on corrosion rates, contact CSIRO Division of Building, Construction and Engineering (Highett) in Australia, and BRANZ (Wellington) in New Zealand.



GRAPHS DERIVED FROM MEASURED DATA SHOWING VARIATION OF ONE YEAR CORROSION RATE OF MILD STEEL WITH DISTANCE FROM THE OCEAN NOTE: 1. For south east Melbourne the distance is from Port Phillip Bay. NOTE: 2. The Panels used to carry out the tests were exposed vertically.


Exposure Environment: A-Very Low, B- Low, C- Medium, D- High, E-I- Very High Industrial, E-M- Very High Marine, F- Inland Tropical ^ Some colours may require multiple coats to achieve opacity, - Not applicable, * Suitable for this category but not economical. ‡ Refer to AS 1627.1, AS1627.2, AS1627.4 and AS1627.9 Products nominated in the above systems comply with the minimum performance levels nominated by AS2312 but may not carry APAS approval. Refer to product technical data sheet for approvals. Durability years nominated are a guide defined by AS2312 and do not constitute a Valspar warranty.


Paint Systems for Steel – Atmospheric Exposure

Coating Specification Durability guide (as per AS/NZS 2312) AS/NZS

2312 System &

Wattyl Industrial Coating System Number

Surface Preparation

‡

1ST Coat 2ND Coat 3RD Coat

Total DFT (µm)

Exposure Environment (as per AS/NZS 2312)

Wattyl Product Nom DFT (µm)



A B C D E-I E-M F

ACRYLIC – Latex, single pack ACL1 9000 St2 All Purpose Primer 40 Wattyl Sunfast 40 Wattyl Sunfast 40 120 15-25 5-15 2-5 2-5 - - 2-5

ACL2 9001 Sa2½ Galvit EP100 75 Wattyl Sunfast 40 Wattyl Sunfast 40 155 25+ 15-25 10-15 5-10 2-5 2-5 10-15

ACL2 9002 Sa2½ Galvit ES600 75 Wattyl Sunfast 40 Wattyl Sunfast 40 155 25+ 15-25 10-15 5-10 2-5 2-5 10-15

ACL3 9003 Sa2½ Galvit EP100 75 Epinamel DTM985 150 Wattyl Sunfast^ 40 265 * 25+ 15-25 10-15 5-10 5-10 15-25

ACL3 9004 Sa2½ Galvit ES600 75 Epinamel DTM985 150 Wattyl Sunfast^ 40 265 * 25+ 15-25 10-15 5-10 5-10 15-25




Paint Systems for Steel – Atmospheric Exposure (continued)


2312 System &


Surface Preparation

‡


Total DFT (µm)





A B C D E-I E-M F

ACRYLIC – Solvent borne catalyzed acrylic, two pack ACC1 9005 St2 Epinamel DTM985 150 Paracryl IF540^ 50 - - 200 25+ 10-25 5-10 2-5 - - 5-10

ACC2 9006 Sa2½ Epinamel PR250 75 Paracryl IF540^ 50 - - 125 25+ 15-25 10-15 5-10 2-5 2-5 10-15

ACC3 9007 Sa2½ Galvit EP100 75 Paracryl IF540^ 50 - - 125 25+ 15-25 10-15 5-10 2-5 2-5 10-15

ACC3 9008 Sa2½ Galvit ES600 75 Paracryl IF540^ 50 - - 125 25+ 15-25 10-15 5-10 2-5 2-5 10-15

ACC4 9009 Sa2½ Epinamel PR250 75 Epinamel DTM985 150 Paracryl IF540^ 50 275 * 25+ 15-25 10-15 5-10 5-10 15-25

ACC5 9010 Sa2½ Galvit EP100 75 Epinamel DTM985 150 Paracryl IF540^ 50 275 * 25+ 15-25 10-15 2-5 5-10 15-25

ACC5 9011 Sa2½ Galvit ES600 75 Epinamel DTM985 150 Paracryl IF540^ 50 275 * 25+ 15-25 10-15 2-5 5-10 15-25

ACC6 9012 Sa2½ Galvit EP100 75 Epinamel DTM985 200 Paracryl IF540^ 50 325 * 25+ 25+ 15-25 5-10 10-15 25+

ACC6 9013 Sa2½ Galvit ES600 75 Epinamel DTM985 200 Paracryl IF540^ 50 325 * 25+ 25+ 15-25 5-10 10-15 25+






2312 System &


Surface Preparation

‡


Total DFT (µm)





A B C D E-I E-M F

ALKYD ALK1 9014 St2 All Purpose Primer 40 - - - - 40 10+ 0-5 - - - - -

ALK2 9015 Sa2½ Duranamel PR9 75 - - - - 75 15+ 5-15 2-5 - - - 2-5

ALK3 9016 St2 Duranamel PR9 75 Duranamel BR22^ 40 - - 115 15+ 5-15 2-5 - - - 2-5

ALK4 9017 Sa2½ Duranamel PR9 75 Duranamel BR22^ 40 - - 115 25+ 10-25 5-10 2-5 - - 5-10

ALK5 9018 St2 All Purpose Primer 40 Duranamel BR22 40 Duranamel BR22 40 120 15+ 5-15 2-5 - - - 2-5

CHLORINATED RUBBER CLR2 9020 Sa2½ Epinamel PR250 75 Chem-Tuff 50 Chem-Tuff 50 175 * 15-25 10-15 5-10 5-10 2-5 10-15






2312 System &


Surface Preparation

‡


Total DFT (µm)





A B C D E-I E-M F

EPOXY –High Build (DFT:125µm to 500µm per coat)

EHB1 9021 Sa2½ Epinamel DTM985 250 - - - 250 25+ 15-25 10-15 5-10 2-5 2-5 10-15

EHB2 9022 Sa2½ Epinamel DTM985 400 - - - - 400 * 25+ 15-25 10-15 5-15 5-15 10-15

EHB3 9023 Sa2½ Epinamel PR250 75 Epinamel DTM985 200 - - 275 * 25+ 15-25 10-15 5-15 5-15 10-15

EHB4 9024 Sa2½ Galvit EP100 75 Epinamel DTM985 200 - - 275 * 25+ 15-25 10-15 5-10 10-15 10-15

EHB4 9025 Sa2½ Galvit ES600 75 Epinamel DTM985 200 - - 275 * 25+ 15-25 10-15 5-10 10-15 10-15

EHB5 9026 Sa2½ Epinamel PR250 75 Epinamel DTM985MIO 150 Epinamel DTM985MIO 150 375 * 25+ 15-25 10-15 10-15 10-15 15-25

EHB6 9027 Sa2½ Galvit EP100 75 Epinamel DTM985MIO 150 Epinamel DTM985MIO 150 375 * 25+ 25+ 10-25 10-15 10-15 10-25

EHB6 9028 Sa2½ Galvit ES600 75 Epinamel DTM985MIO 150 Epinamel DTM985MIO 150 375 * 25+ 25+ 10-25 10-15 10-15 10-25

EPOXY –Ultra High Build

EUH1 9029 Sa2½ Epinamel UHB1000 1500 - - - 1500 * * * 25+ 15-25 15-25 *






2312 System &


Surface Preparation

‡


Total DFT (µm)





A B C D E-I E-M F

EPOXY – Primer / finish gloss EPF1 9030 Sa2½ Epinamel PR250 75 Epinamel DTM985 150 Epinamel CF602 50 275 * 25+ 15-25 10-15 5-15 5-15 10-15

EPOXY MASTIC – Surface tolerant EPM1 9031 St2 Epinamel DTM985 200 - - - - 200 25+ 10-25 5-10 2-5 - - 5-10

EPM3 9032 Sa2 Epinamel DTM985 200 Epinamel DTM985 200 - - 400 * 15-25 10-15 5-10 2-5 2-5 10-15






2312 System &


Surface Preparation

‡


Total DFT (µm)





A B C D E-I E-M F

INORGANIC ZINC SILICATE IZS1 9033 Sa2½ Galvit ES600 75 - - - - 75 25+ 15-25 10-15 5-10 2-5 2-10 10-15

POLYURETHANE – Solvent borne, two pack PUR1 9034 St2 Epinamel DTM985 150 Poly U400^ 50 - - 200 * 10-15 5-10 2-5 - - 5-15

PUR2 9035 Sa2½ Epinamel PR250 75 Poly U400^ 50 - - 125 * 15-25 10-15 5-10 2-5 2-5 10-15

PUR3 9036 Sa2½ Epinamel PR250 75 Epinamel DTM985 150 Poly U400^ 50 275 * 25+ 15-25 10-15 5-10 5-10 15-25

PUR4 9037 Sa2½ Galvit EP100 75 Epinamel DTM985 150 Poly U400^ 50 275 * 25+ 15-25 10-15 5-10 5-10 15-25

PUR4 9038 Sa2½ Galvit ES600 75 Epinamel DTM985 150 Poly U400^ 50 275 * 25+ 15-25 10-15 5-10 5-10 15-25

PUR5 9039 Sa2½ Galvit EP100 75 Epinamel DTM985 200 Poly U400^ 50 325 * 25+ 25+ 15-25 10-15 10-15 25+

PUR5 9040 Sa2½ Galvit ES600 75 Epinamel DTM985 200 Poly U400^ 50 325 * 25+ 25+ 15-25 10-15 10-15 25+

PUR6 9041 St2 Epinamel PR250 75 Epinamel PR250 75 Poly U750^ 75 225 * 10-15 5-10 2-5 - - 5-15

PUR7 9042 Sa2½ Galvit EP100 75 Epinamel PR250 75 Poly U750^ 75 225 * 15-25 10-15 5-10 2-5 2-5 10-15

GUIDE TO AS/NZS 2312: 2002 (amdt no.1 2004)



Paint Systems for Batch Galvanised Coatings – Atmospheric Exposure

Coating Specification Durability guide (as per AS/NZS 2312)

AS/NZS 2312 System &


Surface Preparation‡

1ST Coat 2ND Coat

Total DFT (µm)




A B C D E-I E-M F

HDG600P1 9043

Degrease, wash and dry Wattyl Sunfast 40 Wattyl Sunfast 40 80 25+ 25+ 25+ 15-25 2-5 5-15 25+

HDG600P2 9044

Degrease, wash and dry AquaPrep Galvanised Iron Primer 40 Wattyl Sunfast^ 40 80 25+ 25+ 25+ 15-25 2-5 5-15 25+

HDG600P3 9045 Sweep abrasive blast Epinamel DTM985 150 - - 150 * 25+ 25+

HDG600P3 9046 Sweep abrasive blast Epinamel DTM985 150 Epinamel DTM985 150 300 25+ 5-15 15-25 25+

HDG600P5 9047 Sweep abrasive blast Epinamel PR250 (Olive Green) 75 Epinamel DTM985 150 225 * 25+ 25+ 25+ 5-15 15-25 25+

HDG600P5 9048 Sweep abrasive blast Epinamel PR360ZPS 75 Epinamel DTM985 150 225 * 25+ 25+ 25+ 5-15 15-25 25+

HDG600P6 9049 Sweep abrasive blast Epinamel PR250 (Olive Green) 75 Paracryl IF540^ 75 150 * 25+ 25+ 25+ 5-15 15-25 25+

HDG600P6 9050 Sweep abrasive blast Epinamel PR360ZPS 75 Paracryl IF540^ 75 150 * 25+ 25+ 25+ 5-15 15-25 25+

HDG600P7 9051 Sweep abrasive blast Epinamel PR250 (Olive Green) 75 Poly U750^ 75 150 * 25+ 25+ 25+ 5-15 15-25 25+

HDG600P7 9052 Sweep abrasive blast Epinamel PR360ZPS 75 Poly U750^ 75 150 * 25+ 25+ 25+ 5-15 15-25 25+

HDG600P7 9053 Sweep abrasive blast Epinamel PR250 (Olive Green) 75 Poly U400^ 75 150 * 25+ 25+ 25+ 5-15 15-25 25+

HDG600P7 9054 Sweep abrasive blast Epinamel PR360ZPS 75 Poly U400^ 75 150 * 25+ 25+ 25+ 5-15 15-25 25+


Notes: 1. All sharp edges, welds, corners, bolts, nuts holes etc shall be stripe coated by brush with each coat prior to full coat application. 2. Where coating in under immersion and/or buried, testing for holidays/pinholes in accordance with AS3894.1 is required. 4. To prevent coating damage, clean up all spills immediately. 5. Refer to Wattyl Industrial Coatings document I-19 Tank Lining Resistance Guide for suitable cargoes. ^ Some colours may require multiple coats to achieve desired film build and opacity, - Not applicable, * Suitable for this category but not economical ‡ Refer to AS 1627.1, AS1627.2, AS1627.4 and AS1627.9 Products nominated in the above systems comply with the minimum performance levels nominated by AS2312 but may not carry APAS approval. Refer to product technical data sheet for approvals. Only factory manufactured colours may be used in immersion applications. Durability years nominated are a guide defined by AS2312 and do not constitute a Valspar warranty.


Recommended Systems for Non-Atmospheric Environments

Coating Specification AS/NZS 2312

System & Wattyl Industrial Coating System Number


Surface Profile (µm)

1ST Coat 2ND Coat 3RD Coat Total DFT (µm) Wattyl Product Nom DFT

(µm) Wattyl Product Nom DFT (µm) Wattyl Product Nom DFT

(µm)

POTABLE WATER IMMERSION (refer to notes 1,2) EUH1 9055 Sa3 75 - 100 Epinamel TL770SF 500 Epinamel TL770SF 500 - 1000

EHB7 9056 Sa2½ 50 - 75 Epinamel TL710 150 Epinamel TL710 150 - - 300

EHB8 9057 Sa3 50 - 75 Epinamel TL710 250 Epinamel TL710 250 - - 500

SEAWATER IMMERSION (refer to notes 1,2) EUH2 9058 Sa2½ 75-100 Epinamel UHB1000 1500 Epinamel UHB1000 1500 - - 3000

EHB7 9059 Sa2½ 50 - 75 Epinamel TL710 150 Epinamel TL710 150 - - 300

EHB7 9060 Sa2½ 50 - 75 Epinamel DTM985 250 Epinamel DTM985 250 - - 500

EHB7 9061 Sa2½ 50 - 75 Epinamel MF920 250 Epinamel MF920 250 - - 500

SEAWATER SPLASH (refer to notes 1,2) EUH3 9062 Sa2½ 75 - 100 Epinamel UHB1000 1000 - - 1000

EHB7a 9063 Sa2½ 50 - 75 Epinamel DTM985 250 Epinamel DTM985 250 - - 500

EHB7a 9064 Sa2½ 50 - 75 Epinamel MF920 250 Epinamel MF920 250 - - 500

EHB7a 9065 Sa2½ 50 - 75 Epinamel TL710 250 Epinamel TL710 250 - - 500

EHB9 9066 Sa2½ 30 - 50 Epinamel PR250 100 Epinamel DTM985 250 Epinamel DTM985 250 600

EHB9 9067 Sa2½ 30 - 50 Epinamel PR250 100 Epinamel TL710 250 Epinamel TL710 250 600




Recommended Systems for Non-Atmospheric Environments (continued)

Coating Specification

AS/NZS 2312 System & Wattyl Industrial Coating System Number


Surface Profile (µm)


Total DFT (µm) Wattyl Product Nom DFT

(µm) Wattyl Product Nom DFT (µm) Wattyl Product

Nom DFT (µm)

BURIED IN SOIL (refer to notes 1,2) EUH4 9068 Sa2½ 75 - 100 Epinamel UHB1000 1200 Epinamel UHB1000 1200 2400

- 9069 Sa2½ 50 - 75 Epinamel DTM985 400 Epinamel DTM985 400 - - 800

SEWERAGE (refer to notes 1,2) EUH8a

6070 Sa2½ 50 - 75 Epinamel DTM985 250 Epinamel DTM985 250 - - 500

SEVERE INDUSTRIAL – Alkaline Splash (refer to notes 1,4) EUH5 9071 Sa2½ 75 - 100 Epinamel UHB1000 1500 1500

EHB9 9072 Sa2½ 30 – 50 Epinamel PR250 (Off White) 75 Epinamel TL710 250 Epinamel TL710 250 575

SEVERE INDUSTRIAL – Solvent Immersion (refer to notes 1,2,5; IZS1 exempt from notes 1,2) IZS1 9073 Sa2½ 30 – 50 Galvit ES600 75 - - - - 75

ETL1 9074 Sa2½ 30 – 50 Epinamel TL710 200 Epinamel TL710 200 - - 400



Recommended Systems for Non-Atmospheric Environments (continued)

Coating Specification AS/NZS 2312

System & Wattyl

Industrial Coating System Number



Total DFT (µm)

Maximum heat

resistance °C Wattyl Product Nom DFT (µm) Wattyl Product Nom DFT (µm) Wattyl Product Nom DFT (µm)

HIGH TEMPERATURE HR3 9075 Sa2½ Galvit ES600 75 - - - - 75 400


For the most up to date information contact Valspar Customer Service Hotline or visit the Wattyl Website.

Australia New Zealand CUSTOMER SERVICE HOTLINE 132 101 0800 735 551 WEBSITE http://www.wattyl.com.au http://www.wattyl.co.nz

Trademarks are the property of Valspar Paint (Australia) Pty Ltd.

1. This information, provided by Valspar Paint (Australia) Pty Ltd (hereinafter referred to as “Valspar”), is important to ensure that the listed product(s) perform according to the stated application and uses and must be followed to meet Valspar’s warranties express and implied. Valspar advises that you (a) review the Technical Data Sheets (TDS) and Material Safety Data Sheets (MSDS) before you use or handle the product; (b) ensure that the product be used only in accordance with the information provided by Valspar and the product(s) be transported, stored and handled in accordance with the information on the MSDS and relevant TDS; and (c) thoroughly test the product, using the recommended application method on a sample of intended substrate, before using the product. 2. The information in this TDS was prepared using information gathered during product development. While Valspar endeavours to update this information and maintain the accuracy and currency of its contents, Valspar does not warrant that the information provided is current when the product is used or is wholly comprehensive. 3. For all product and non-product related information, Valspar recommends that you conduct such additional investigations as may be necessary to satisfy yourself of the accuracy, currency and comprehensiveness of the information on which you rely in using and handling the product. If you require further information please contact your nearest Valspar office before using the product(s). 4. To the full extent permitted by law, Valspar’s liability for breach of a condition or warranty implied into the contract for sale between Valspar and you by law is limited at Valspar’s election to: (a) the replacement of the product; or (b) payment of the cost of replacing the product. If coating rectification is required Valspar Technical Services shall be contacted prior to commencement. VALSPAR PAINT (AUSTRALIA) PTY LTD (ABN 40 000 035 914)

http://www.wattyl.com.au/

http://www.wattyl.co.nz/

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