13/8 is a precipitation hardenable stainless. It is a medium to high strength material achieved through appropriate ageing treatments (see table below) and contains very good resistance to stress corrosion. PH 13/8MO stainless steel is produced by Vacuum Induction Melting (VIM) followed by Vacuum Arc Remelting (VAR).
Fasteners
Valves
Fittings
Petrochemical Components
Aircraft Structural parts
AMS 5629
UNS S13800
W.Nr 1.4534