CSA - CWB Group

CSA W48-18

Filler Metals and Allied Materials for Metal Arc Welding Changes Summary

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PG.2 CHANGES IN CSA W48-18

CSA W48-18

INTRODUCTION

The fourth edition of CSA W48 was published in January 2018. In the previous editions of CSA W48, published in 2014, 2006 and 2001, technical changes were introduced with the intent of harmonizing with international standards. Harmonization has continued with the fourth edition with the adoption of AWS A5 specifications and ISO standards to include consumable types that were not cover in the previous editions of W48. Classification and testing requirements remain unchanged for SMAW carbon and low-alloy steel electrodes and SAW carbon steel wire electrode/flux.

Below is a summary of the new adopted specifications and standards.

GMAW Carbon and low-alloy steel wire electrodes

Wire electrodes and deposits for GMAW of non-alloy and fine-grain steels are classified and approved using the designations and classification requirements specified in CAN/CSA-ISO 14341 for strength levels up to 550 MPa. For strength levels above 620 MPa, AWS A5.28M is used for classification requirements and testing.

FCAW/MCAWCarbon and low-alloy steel wire electrodesAll classifications related to carbon steel and low-alloy steel electrodes for flux-cored arc welding and metal-cored arc welding are classified and approved using the designations and classification requirements specified in AWS A5.36M. In addition to the requirements of AWS A5.36, FCAW wire electrodes are subject to fillet weld test for initial certification, MCAW wire electrodes using the open classification system are also subject to fillet weld test for initial certification. The fillet weld test is a specific CSA W48 requirements for FCAW and MCAW wire electrodes. There are tables at the end of this document showing the equivalency between CSA W48-18 and CSA W48-06, AWS A5.28, AWS A5.29.

SMAWChromium and chromium-nickel steel electrodes

All classifications related to chromium and chromium-nickel steel electrodes for shielded metal arc welding (SMAW) have been replaced by references to AWS A5.4M.

GMAW/GTAW/SAWChromium and chromium-nickel steel wire electrodes and rods

All classifications related to chromium and chromium-nickel steel electrodes for gas-shielded metal arc welding (GMAW), gas tungsten arc welding (GTAW), and submerged arc welding (SAW) have been added by including references to AWS A5.9M.


PG. 3 CHANGES IN CSA W48-18

FCAW/MCAW Chromium and chromium-nickel steel wire electrodes

All classifications related to chromium and chromium-nickel steel wire electrodes for FCAW and MCAW have been added by including references to AWS A5.22M. FCAW Stainless Steel certified wire electrodes will be listed with the shielding gas used for approval. MCAW stainless Steel certified wire electrodes will be listed without a shielding gas as only the chemical analysis is required for approval.

GTAW/PAW Carbon steel rods

All classifications related to carbon steel rods and deposits specifically for GTAW/PAW have been added by including references to AWS A5.18M.

GTAW/PAW Low-alloy steel rods

All classifications related to low alloy steel rods and deposits specifically for GTAW and PAW have been added by including references to AWS A5.28M.

1. The new standard can be ordered through CWB website at www.cwbgroup.org/store

2. Starting April 1, 2018, all consumables will be tested to the requirements of CSA W48-18.

3. For administrative purpose, all manufacturers will have to reflect newclassification system on labels on or before April 1, 2020.

4. At renewal time, all FCAW/MCAW carbon and low-alloy steel wire electrodeswill be converted to the CSA W48-18 classification using AWS A5.36 openclassification system (refer to clause B2 of AWS A5.36M:2016).

5. In order to facilitate the transition towards the new classification system,for FCAW/MCAW wire electrodes, certificates will make reference to theold classification; (see below examples):

a. E491T1-C1A3-CS1-H8 (E491T-9-H8), gas: C1 (100%CO2)b. E490T1-M21A3-CS1-H8 (E492T-9M-H8) gas M21 (e.g.: Argon + 25%CO2)c. E490T15-M20A3-CS1-H8 (E492C-6M-H8) gas M20 (e.g.: Argon + 8%CO2)

IMPLEMENTATION PLAN

CSA W48-18



6. For the classifications listed in table A.1 of AWS A5.36M, the consumablemanufacturers will have the opportunity to request the retained classificationof AWS A5.36M (refer to clause A1 of AWS A5.36 Annex A). For all otherclassifications the open classification system will be used.

7. SMAW chromium-chromium-nickel steel electrode will now be classified andtested to the requirements of AWS A5.4M, the classification system of AWS A5.4is identical to the classification system of the previous W48, and as such thetransition to AWS A5.4 will not affect the classification of the electrodes.Initial certification tests for -16, -17 & -26 electrodes will now be done inboth AC and DC+ polarities as required by AWS A5.4M. For renewal tests,polarity will alternate from AC to DC+ every two years.

8. Since FCAW/MCAW for chromium and chromium-nickel wire electrodes,GMAW/GTAW for chromium and chromium-nickel wire electrodes and rods and GMAW/GTAW/PAW for low-alloy steel wire electrodes and rods were alreadytested and certified by CWB using AWS A5.22, A5.9 and A5.28 respectively,the addition of these products in the new standard will not affect the manufacturersand fabricators.

9. Wire/rod to be used only as GTAW/PAW will be tested to AWS A5.18. WhenA5.18 is used to certify a wire/rod the product will be certified for GTAW/PAWonly (not GMAW).

10. The classification and testing requirements of SMAW for carbon and low-alloysteel electrodes and SAW for carbon steel wire electrode/flux are describedin the new standard.

• Clauses 1.2 through 1.7 added to introduce the designation and classificationrequirements of AWS A5.4M, A5.9M, A5.18M, A5.22M, A5.28M and A5.36M.

º Note: To be familiar with the classification system and testing requirements, AWS A5.4M, A5.9M, A5.18M, A5.22M, A5.28M and A5.36M will be required as deemed necessary by the manufacturer of the consumable(s).

• The table of clause 1 was updated to include the clause references for eachconsumable type.

• Clause 1.14 added to specify that the metric version of AWS Standards are usedto certify consumables (e.g.: AWS A5.36M).

IMPLEMENTATION PLAN (Continued)

Summary of changes and comments that will affect the CSA W48 certification process.

SCOPE

CSA W48-18



• References updated –

º A240.A240M-13a / A564/A564M-10 / were deleted because it is not required once chromium and chromium-nickel steel SMAW electrodes were removed.

º A5.4/A5.4M-2012 addedº A5.9/A5.9M -2012 addedº A5.22/A5.22M added

• Clause 5.2.5, the diameter and length tolerances have been included inone table instead of multiple tables.

• Clause 7.1.3 updated to includes the new product types listed in clause 1,the addition are listed below:

1 Chromium and chromium-nickel steel GMAW, GTAW and SAW,a sample of the smallest size manufactured shall be taken for chemical analysis.

2 Carbon and low alloy steel for GTAW and PAW, as per AWS A5.18M.3 Carbon and low alloy steel FCAW and MCAW, in addition to the requirements

of AWS A5.36M, fillet weld tests are required for initial certification (refer to table 10 of the standard).4 Chromium and chromium-nickel steel FCAW and MCAW, as per AWS

A5.22M, for chemical analysis a sample of a single diameter is acceptable.

• Clause 7.2.2 of the previous edition was removed as the new standard refer toAWS A5.4M for base metal for chromium and chromium-nickel steel electrodes.

• Clause 7.3.1.5 was added for GMAW electrodes with strength levels above 620MPa shielding gases used for testing shall be in accordance with AWS A5.28M.

• Clause 7.3.3 was added for Chromium and chromium-nickel steel FCAW andMCAW shielding gases used for testing shall be in accordance with AWS A5.22M.

• Clause 7.3.4 was added for Carbon and low alloy steel rods for GTAW and PAWshielding gases used for testing shall be in accordance with AWS A5.18M.

• Clause 7.4.3 was revised to refer to the heat treatment condition as per AWSA5.4M, A5.22M, A5.28M and A5.36M.

• Clause 7.5.2 for radiography test assembly, the preparation of the surface prior totesting has been changed to allow reinforcement up to 2.5mm.

REFERENCE PUBLICATIONS

GENERAL REQUIREMENTS

TEST PROCEDURES

CSA W48-18



• Clause 7.5.4, new standard methods and practices defined in ASTM A1032(Standard Test Method for Radiographic Examination of Weldments) and E2033(Standard Practice for Computed Radiology) are now accepted.

• Clause 7.5.6 was revised to include radiography acceptance criteria as defines inAWS A5.4M, A5.22M, A5.28M and A5.36M.

• Clause 7.6.3 has been revised to allow aging of 250oC for a period of 16h for FCAW, MCAW, GMAW, GTAW and PAW, as the AWS A5.18M, A5.28M and A5.36M only allows 105oC for a period of 48h.

• Clause 7.6.4 has been revised to refer to AWS B4.0M for tensile tests.

• Clause 7.10 and 7.11 have been revised to remove testing requirements forchromium and chromium-nickel steel electrodes, as these product types arenow tested to AWS A5.4M.

• Clause 7.10.6 updated, value corrected…0.5mm is now 1mm

• Clause 7.13.1 has been revised, now it is clearly mentioned that reconditioningis not permitted for covered electrodes of 620MPa tensile strength or lower.

• Clause 8.1 paragraph h) has been added, now for consumables wherereconditioning treatment is required, temperature and time shall be indicatedon consumable package and label.

• As chromium and chromium-nickel steel electrodes are now tested to AWSA5.4M, three (3) tables have been removed in the new edition. See belowlist of table changes:

TEST PROCEDURES (Continued)

MARKING

TABLES

Table 2 deleted because it is covered in AWS A5.4/A5.4M.Table 3 is now Table 2 – electrode classifications corrected.Table 4 is now Table 3 – title correctedTable 5 is now Table 4Table 6 is now Table 5Table 7 deleted –already covered by AWS A5.4/A5.4MTable 8 is now Table 6Table 9 is now Table 7Table 10 deleted –already covered by AWS A5.4/A5.4MTable 11 is now Table 8Table 12 is now Table 9

Table 13 is now Table 10 updated as follow:For E4916 and E4918 to have ac and dc (or dc electrode positive only) Fillet weld test added for FCAW (open and retained classification) and MCAW (open classification) Table 14 is now Table 11- updated references to tablesTable 15 is now Table 12 – title updatedTable 16 is now Table 13Table 17 is now Table 14 – values updated. Table 18 is now Table 15- values updated and fillet weld dimensions added for A5.36MTable 19 is now Table 16- values deleted-covered in AWS A5.4/A5.4M and fillet weld dimensions added for A5.36M.

CSA W48-18



• Minor changes to Annex A, Annex B, Annex C, Annex D, Annex E, Annex F,Annex I, Annex L.

• Annex K updated as below:Clause K.1.6 revised to change ‘… shall publish a list …’ by ‘…shall maintain a list..’Clause K.1.7 deletedClause K.2.1-corrected and reworded to include check test requirements for FCAW, MCAW, GTAW and PAWClause K.2.2 – check tests requirements added for FCAW, MCAW, GTAW and PAWClause K.2.2 – For SMAW carbon steel electrodes, chemical analysis of the weld deposit is now mandatory

• Annex L – Table L.2 and L.3 (SI range) values corrected

• Annex M – New Note (3) added ‘J’ designator

• Table M.1 updated.

CSA W48-18 adopt AWS A5.36M method for classifying FCAW and MCAW wire electrodes. AWS A5.36M specification utilizes a new, “open classification system” which is introduced for the classification of carbon and low-alloy steel flux cored and metal cored electrodes. The open classification system uses designators to indicate electrode type (Usability Designator), welding position capability, tensile strength, impact strength, shielding gas (with more options and new designations), condition of heat treatment, if any, and weld deposit composition. The change to an open classification system is being made to allow for the classification of flux cored and metal cored electrodes with classification options which (1) better define the performance capabilities of the advanced electrode designs that have been developed, and (2) reflect the application requirements of today’s marketplace.

Because CSA W48-18 adopt AWS A5.36M method for classifying FCAW and MCAW electrodes, it is recognized that it might cause problems vis-à-vis acceptance of exist-ing procedure qualification records (PQR), weld procedure data sheets (WPDS), and weld procedure specifications (WPS), you will find below tables showing equivalency between the new open classification system in AWS A5.36M, which has been adopt-ed in CSA W48-18, and the old system in CSA W48-06, AWS A5.29 and A5.28. For an equivalency of classifications between the retained classification of AWS A5.36M and the old system of CSA W48-06, please refer to annex M of CSA W48-18.

The following AWS A5.36M open classifications shall be considered equivalent to the corresponding classifications for the purpose of using existing procedure qualification records (PQR), weld procedure data sheets (WPDS), and weld proce-dure specifications (WPS).

ANNEXES

New FCAW/MCAW - Carbon and low-alloy steel wire electrode classifications

CSA W48-18



Equivalency of classifications forFCAW and MCAW electrode classifications with open classification system

CARBON STEEL ELECTRODES FOR FCAW*

CSA W48-18 (AWS A5.36M) Shielding gas CSA W48-06

E490T1-C1A2-CS1 C1 E492T-1E491T1-C1A2-CS1 C1 E491T-1

E490T1-MXXA2-CS1 MXX (M21, M20, …) E492T-1ME491T1-MXXA2-CS1 MXX (M21, M20, …) E491T-1M

E490T4-AZ-CS3 None (self-shielded) E492T-4E490T5-C1A3-CS1 C1 E492T-5E491T5-C1A3-CS1 C1 E491T-5

E490T5-MXXA3-CS1 MXX (M21, M20, …) E492T-5ME490T6-A3-CS3 None (self-shielded) E492T-6E490T7-AZ-CS3 None (self-shielded) E492T-7E490T8-A3-CS3 None (self-shielded) E492T-8E490T8-A4-CS3 None (self-shielded) E492T-8JE491T8-A3-CS3 None (self-shielded) E491T-8E491T8-A4-CS3 None (self-shielded) E491T-8J

E490T1-C1A3-CS1 C1 E492T-9E491T1-C1A3-CS1 C1 E491T-9E490T1-C1A4-CS1 C1 E492T-9JE491T1-C1A4-CS1 C1 E491T-9J

E490T1-MXXA3-CS1 MXX (M21, M20, …) E492T-9ME491T1-MXXA3-CS1 MXX (M21, M20, …) E491T-9ME490T1-MXXA4-CS1 MXX (M21, M20, …) E492T-9MJE491T1-MXXA4-CS1 MXX (M21, M20, …) E491T-9MJ

E490T11-AZ-CS3 None (Self-shielded) E492T-11E491T11-AZ-CS3 None (Self-shielded) E491T-11

E490T1-C1A3-CS2 C1 E492T-12E491T1-C1A3-CS2 C1 E491T-12E490T1-C1A4-CS2 C1 E492T-12JE491T1-C1A4-CS2 C1 E491T-12J

E490T1-MXXA3-CS2 MXX (M21, M20, …) E492T-12ME491T1-MXXA3-CS2 MXX (M21, M20, …) E491T-12ME490T1-MXXA4-CS2 MXX (M21, M20, …) E492T-12MJE491T1-MXXA4-CS2 MXX (M21, M20, …) E491T-12MJ

E490T14S None (Self-shielded) E492T-14

* AWS A5.36M open classifications above will include in the body of each classification the hydrogen designator,as required. For instance, if the electrode classification on the existing PQR is E491T-9M-H8 a newly developed WPDS based on that PQR will show E491T1-MXXA3-CS1-H8.

CSA W48-18



CARBON STEEL ELECTRODES FOR MCAW*

LOW-ALLOY STEEL ELECTRODES FOR FCAW*

LOW-ALLOY STEEL ELECTRODES FOR MCAW*


E490T15-C1A3-CS1 C1 E492C-6E491T15-C1A3-CS1 C1 E491C-6

E490T15-MXXA3-CS1 MXX (M21, M20, …) E492C-6ME491T15-MXXA3-CS1 MXX (M21, M20, …) E491C-6ME490T15-C1A4-CS1 C1 E492C-6JE491T15-C1A4-CS1 C1 E491C-6J

E490T15-MXXA4-CS1 MXX (M21, M20, …) E492C-6MJE491T15-MXXA4-CS1 MXX (M21, M20, …) E491C-6MJ


E551T1-C1A3-K2 C1 E551T1-K2CE551T1-MXXA3-K2 MXX (M21, M20, …) E551T1-K2ME551T1-C1A4-K2 C1 E551T1-K2C-J

E551T1-MXXA4-K2 MXX (M21, M20, …) E551T1-K2M-JE551T1-C1A3-Ni1 C1 E551T1-Ni1C

E551T1-MXXA3-Ni1 MXX (M21, M20, …) E551T1-Ni1ME551T1-C1A4-Ni1 C1 E551T1-Ni1C-J

E551T1-MXXA4-Ni1 MXX (M21, M20, …) E551T1-Ni1M-JE551T1-C1A4-Ni2 C1 E551T1-Ni2C

E551T1-MXXA4-Ni2 MXX (M21, M20, …) E551T1-Ni2ME621T1-C1A2-K2 C1 E621T1-K2C

E621T1-MXXA2-K2 MXX (M21, M20, …) E621T1-K2ME760T5-C1A5-K4 C1 E760T5-K4C

E760T5-MXXA5-K4 MXX (M21, M20, …) E760T5-K4M


(See note a) M22 or M13 E55C-Ni1E550T15-MXXP6-Ni2 MXX (M13 or M22) E55C-Ni2E620T15-MXXA5-K3 MXX (M21 or M20) E62C-K3E760T15-MXXA5-K4 MXX (M21 or M20) E76C-K4

* AWS A5.36M open classifications above will include in the body of each classification the hydrogen designator,as required. For instance, if the electrode classification on the existing PQR is E491C-6M-H8 a newly developed WPDS based on that PQR will show E491T15-MXXA3-CS1-H8.

* AWS A5.36M open classifications above will include in the body of each classification the hydrogen designator,as required. For instance, if the electrode classification on the existing PQR is E551T1-K2C-H4 a newly developed WPDS based on that PQR will show E551T1-C1A3-K2-H4.

* AWS A5.36M open classifications above will include in the body of each classification the hydrogen designator, as required. For instance, if the electrode classification on the existing PQR is E55C-Ni2-H4 a newly developed WPDS based on that PQR will show E550T15-MXXP6-Ni2-H4.

a) As the impact are done at -45oC, there is no specific classification under the metric system for the E55C-Ni1

CSA W48-18

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