This article provides information about A number in welding procedure specification based on requirement of ASME Code Section IX.
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A number gives a similar chemical composition in a 'as weld'condition. The A number is essential variablein most of welding process in ASME Code Section IX. The Table QW-442 in ASMECode Section IX provides the list of A number. Please note the A number inWPS does not refer to the filler wire or electrodechemical composition; it refers to the deposited weld metal chemical composition.The filler metal and deposited weld metal have different chemical compositions.
F number in Welding Procedure Specification. Table QW-432 in ASME Code Section IX provides the list of F numbers. Any change from one F number in welding to the other F number is essential variable in the welding procedure specification. The changing from one F number to other F number is a little bit different in welding performance qualification.
- Welding Filler Metal Classifications, ASME IX F-numbers A-numbers.
- AWS Classification Electrode-Flux Class (SAW) ER80S-G (see sheet 3) E8016-B2 (see sheet 3) SFA Specification SFA 5.28 SFA 5.5 Filler Metal F-No. 6 4 Weld Metal Analysis A-No. 3 Size of Filler Metals mm (in) 2.0 mm (see sheet 3) 3.25 mm (see sheet 3) Filler Metal Product Form Solid copper coated wire Iron powder low hydrogen Max.
How Do You Determine the A number in Welding ProcedureSpecification?
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It can be obtained from procedure qualification coupon. The smallpiece of welding can be removed and chemical analysis test to be performed. Thenthe obtained chemical composition must be compared against the table QW-422 andA number to be selected.
Alternatively if your welding process is one of SMAW, GTAW,LBW and PAW processes you may use the filler metal specification or test reportof filler metal manufacturer.
Similarly you can do same assessment for GMAW and EGWprocesses but the shielding gas should be as the same of welding procedure specification.
Again, similarly you can do the same for SAW but the fluxshould be as the same of welding procedure specification.
As mentioned in above, the A number like P number and F number is an essential variablein most welding processes. It means if you have a WPS and you need to use thatin other job with different A number (it means you are using different fillermetal) then you need to re-qualify your WPS because it is essential variable.The A number 1 and 2 are exceptions. You can consider it as nonessentialvariables.
The ASME Section IX Training Course is 2 days video training course and available online and the student that successfully pass the exam, receive I4I academy certificate with 16 hours training credit.
F number in Welding Procedure Specification. Table QW-432 in ASME Code Section IX provides the list of F numbers. Any change from one F number in welding to the other F number is essential variable in the welding procedure specification. The changing from one F number to other F number is a little bit different in welding performance qualification.
- Welding Filler Metal Classifications, ASME IX F-numbers A-numbers.
- AWS Classification Electrode-Flux Class (SAW) ER80S-G (see sheet 3) E8016-B2 (see sheet 3) SFA Specification SFA 5.28 SFA 5.5 Filler Metal F-No. 6 4 Weld Metal Analysis A-No. 3 Size of Filler Metals mm (in) 2.0 mm (see sheet 3) 3.25 mm (see sheet 3) Filler Metal Product Form Solid copper coated wire Iron powder low hydrogen Max.
How Do You Determine the A number in Welding ProcedureSpecification?
What Is Sfa Mean
It can be obtained from procedure qualification coupon. The smallpiece of welding can be removed and chemical analysis test to be performed. Thenthe obtained chemical composition must be compared against the table QW-422 andA number to be selected.
Alternatively if your welding process is one of SMAW, GTAW,LBW and PAW processes you may use the filler metal specification or test reportof filler metal manufacturer.
Similarly you can do same assessment for GMAW and EGWprocesses but the shielding gas should be as the same of welding procedure specification.
Again, similarly you can do the same for SAW but the fluxshould be as the same of welding procedure specification.
As mentioned in above, the A number like P number and F number is an essential variablein most welding processes. It means if you have a WPS and you need to use thatin other job with different A number (it means you are using different fillermetal) then you need to re-qualify your WPS because it is essential variable.The A number 1 and 2 are exceptions. You can consider it as nonessentialvariables.
The ASME Section IX Training Course is 2 days video training course and available online and the student that successfully pass the exam, receive I4I academy certificate with 16 hours training credit.
Sfa Number In Welding
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