ASME Section IX
Qualification Standard for Welding, Brazing, and Fusing
Summary
Establishes rules for qualification of welders, welding operators, brazers, and brazing operators, and the procedures they use.
Scope
Welding, brazing, and fusing procedure and performance qualification. Defines essential, supplementary essential, and non-essential variables.
Key Requirements
Essential Variables
Changes to essential variables require requalification.
- P-Number (base metal group)
- F-Number (filler metal group)
- A-Number (weld metal analysis)
- Thickness range
- PWHT above upper transformation temperature
Performance Qualification
Welder performance qualification tests.
- Guided bend tests or RT/UT
- Position qualifies specific positions
- 6G qualifies all positions for pipe
- Continuity maintenance (6-month rule)
PQR Requirements
Procedure Qualification Records document actual test results.
- Tensile tests
- Guided bend tests
- Impact tests (when required)
Applicable Materials
Carbon SteelLow Alloy SteelStainless Steel 304Stainless Steel 316Chrome-Moly (P91)Chrome-Moly (P22)Nickel AlloysAluminum
Applicable Processes
SMAWGMAWGTAWFCAWSAW
Related Cross-References
Stainless Steel 316+Stainless Steel 316|SMAW|Butt
Fillers: E316L-16, E316L-17
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