Passivating
PASSIVATING is a chemical process on stainless steel that removes iron and loose particles that are formed during the manufacturing process.
Technodic, Inc. provides the following passivating specifications:
MIL - S - 5002
QQ - P - 35
ASTM - A 380 F - M, ASTM A 967
AMS - QQ - P - 35, Types: II; VI; VII; VIII
MIL - STD - 171 Finish No. 5.4.1
MIL - F - 14072 Finish No. E300