Hardness Testing Survey Requirement for Solution Heat-Treated Nickel-Based Alloys Welded with Solid-Solution Nickel-Based Weld Metal

Introduction

This page addresses a common question related to the requirement for hardness testing survey as part of welding procedure qualification for solution heat-treated nickel-based alloys welded with solid-solution nickel-based weld metal, as per NACE MR0175/ISO 15156 Part 3, Appendix A, Paragraph A.4.3. The inquiry cites ISO 15156 Maintenance Panel Inquiry #2005-13.

Answer

The answer to this question is that no hardness testing survey is required, as A.4.3 does not specify any hardness requirements for welding solid-solution nickel-based alloys with solid-solution nickel-based weld metal.

Conclusion

This question pertains to NACE MR0175/ISO 15156-3 A.4.3, and the reference cited is ISO 15156 Maintenance Panel Inquiry #2006-06.