Is cold-finishing be acceptable for an annealed material that is limited to 22 HRC max hardness?
Section A.1.5.3 of ANSI/NACE MR0175/ISO 15156-3:2015 states “Cold deformation of surfaces is acceptable if caused by processes such as burnishing that do not impart more cold work than that incidental to normal machining operations (such as turning or boring, rolling, threading, drilling, etc.).” – Would cold-finishing be acceptable for an annealed material that is limited to 22 HRC max hardness?
Cold finishing is acceptable only if the cold work is no more than that that would be incidental to normal machining operations. The hardness restrictions for the material remain as specified in ANSI/NACE MR0175/ISO 15156-3:2015.
Reference: Mp Inquiry 2017-03 (NACE MR0175 Part 3 A.1.5.3.