establishes the rules for qualifying a Welding Procedure Specification (WPS) and welding operators. It categorizes filler metals using F-Numbers (based on usability characteristics) and A-Numbers (based on weld metal chemical composition) to minimize the number of welding qualifications required.
Certain critical applications (like low-temperature service) require specific impact testing. Part C details the exact temperature and energy absorption requirements (in Joules or Foot-pounds) that the filler metal must achieve during qualification. 4. Verify Code Edition and Addenda asme section ii part c pdf