Draft Details

Designation:CSA W48
Source:CSA
Contact name:Jonathan Fernando
Review start date:Apr 22, 2022
Review end date:Jun 21, 2022
Contact email:thuy.ton(at)csagroup.org
Draft Scope/Description:

1.1 

This Standard specifies requirements for the classification and certification of

a) carbon steel covered electrodes for shielded metal arc welding (SMAW), as specified in Clause 1.2;

b) chromium and chromium-nickel steel covered electrodes for SMAW, including electrodes designated for welding heat-resistant steels containing more than 11% chromium and less than 50% nickel, as specified in Clause 1.2;

c) low alloy steel covered electrodes for SMAW, as specified in Clause 1.2;

d) wire electrodes and deposits for gas-shielded metal arc welding (GMAW) of non-alloy and fine-grain steels, as specified in Clause 1.2;

e) wire electrodes, rods, and deposits for GMAW, gas tungsten arc welding (GTAW), and submerged arc welding (SAW) of chromium and chromium-nickel steel, as specified in Clause 1.2

f) wire rods and deposits for GTAW and plasma arc welding (PAW) of carbon and low alloy steels, as specified in Clause 1.2;

g) carbon and low alloy steel electrodes for flux-cored arc welding (FCAW) and metal-cored arc welding (MCAW) , as specified in Clause 1.2;

h) chromium and chromium-nickel steel electrodes for FCAW and MCAW, as specified in Clause 1.2;

i) fluxes and solid carbon / low-alloy steel electrodes for SAW, as specified in Clause 1.2; and

j) fluxes and composite carbon steel / low-alloy electrodes for SAW, as specified in Clause 1.2.

       k) Bare aluminum and aluminum alloy electrodes and rods, as                       specified in Clause 1.2

1.2 Specification Utilized

This clause specifies the applicable specification to be utilized for electrode testing and certification

1.3 Execeptions

This Standard does not allow an electrode certified under one classification to be certified under another classification for the same welding process, with the following exceptions:

a) For SAW:

i) A composite electrode may be certified under different classifications in combination with different fluxes.

ii) Fluxes may be classified under any number of classifications, for weld metal in either or both the as-welded and post-weld heat-treated conditions, or using different electrode classifications.

b) For FCAW and MCAW A5.36/A5.36M fixed and open classification equivalents, see Clause I.1

i.           CC

iv.          E49C-6M may also be listed as E49C-3M.

c) For chromium and chromium-nickel steel covered electrodes, materials classified under one classification may be classified under any other classification of AWS A5.4/A5.4M, provided they meet all the requirements for those classifications, except that a material may not be classified under more than one of the following: EXXX-15, EXXX-16, EXXX-17, or EXXX-26 designations.

d) For wire electrodes and deposits for GMAW, FCAW and MCAW of carbon and low alloy steel, materials classified under one classification may be classified under another classification of CAN/CSA-ISO 14341 or AWS A5.36/A5.36M with a different shielding gas provided that they meet all of the requirements for those classifications.

e) Electrodes and wire flux combinations where the only differences are in the hydrogen designators.

f) For wire electrodes, rods, and deposits for GMAW, GTAW, and SAW of chromium and chromium-nickel steel, materials classified under one classification may be classified under any other classification of AWS A5.9/A5.9M, provided they meet all the requirements for those classifications.

g) For wire electrodes and deposits for FCAW and MCAW of chromium and chromium-nickel steel, materials classified under one classification may be classified under another classification of AWS A5.22/A5.22M on the basis of carbon content and shielding gas provided that they meet all of the requirements for those classifications.

h) For MCAW carbon and low-alloy steel electrodes utilizing the open-ended classification system in AWS A5.36/A5.36M a positional designator shall be assigned by the manufacturer to the classification. “1” indicates all position and “0” indicates flat and horizontal.

1.4 Compliance

For purposes of determining compliance with the requirements of this Standard, the actual test values obtained are to be subjected to the rounding off rules of ISO 80000-1, Clause B.3, Rule A. If the measured values are obtained by equipment calibrated in units other than those of this Standard, the measured values are converted to the units of this Standard before rounding. If an arithmetic average value is to be compared to the requirements of this Standard, rounding is to be done only after calculating the arithmetic average. If a test method used in this Standard contains instructions for rounding that conflict with the instructions of this Standard, the rounding requirements of the test method will apply.

An observed or calculated value shall be rounded to the nearest 10 MPa for tensile and yield strength and to the nearest unit in the last righthand place of figures used in expressing the limiting values for other quantities. The rounded results will satisfy the requirements of the appropriate table for the classification under test.

1.5 Safety

This Standard does not address safety associated with welding and welding practices.

Note: CAN/CSA-W117.2 addresses safety in welding and should be followed in addition to applicable workplace health and safety legislation. It is the responsibility of the users of this Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.6 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.7 SI Units

The values given in SI units are the units of record for the purposes of this Standard. The values given in Annex H are for information and comparison only.

1.8 Metric consumable classification

The metric version of AWS Standards are used to certify consumables (for example A5.4M), except for wire diameter tolerances (see Clause 5.1).

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