Is cold-finishing be acceptable for an annealed material that is limited to 22 HRC max hardness?
NACE Hardness and Cold Finishing
Section A.1.5.3 of ANSI/NACE MR0175/ISO 15156-3:2015 specifies that cold deformation of surfaces is acceptable if the processes used, such as burnishing, do not impart more cold work than that incidental to normal machining operations like turning, boring, rolling, threading, drilling, etc.
Acceptability of Cold Finishing for Annealed Materials
The question arises whether cold finishing is acceptable for an annealed material that is limited to a maximum hardness of 22 HRC. According to the reference MP Inquiry 2017-03 (NACE MR0175 Part 3 A.1.5.3.), cold finishing is acceptable only if the cold work is not more significant than that resulting from normal machining operations.
Compliance with NACE MR0175 Requirements
It is essential to comply with NACE MR0175 requirements when it comes to fabrication processes such as cold finishing and cold forming. If you have any questions or concerns regarding compliance, please feel free to contact us.