Test specimens for stud welding shall be made from material adhering to what standard?

• A. ASTM A36
• B. CSA G40.21
• C. ISO 9001
• D. EN 10025

Answer: (B)

In stud welding tests, the base material used for test specimens must be specified to ensure the welds are evaluated against material that matches the standard used for actual production. The material for these test specimens should adhere to the Canadian standard CSA G40.21. This standard defines acceptable grades and mechanical properties for structural steel, so the test coupons reliably represent the materials encountered in service and ensure consistent, valid weld qualification results.

Other options don’t fit this context because they either represent standards from other regions or apply to different purposes. ASTM A36 is a U.S. structural steel specification, not the Canadian standard required here. ISO 9001 is a quality management standard, not a material specification. EN 10025 is a European steel standard, not the Canadian standard referenced for this testing scenario.