Aermet 100 Stainless Steel

AerMet 100 is an ultrahigh-strength secondary-hardening steel to specification AMS 6532 (UNS K92580). It is a nickel-cobalt-chromium-molybdenum alloy with a unique combination of characteristics – tensile strength of 1931 MPa and high values of fracture toughness and resistance to stress corrosion cracking.

AerMet 100 is special because it combines extreme strength and absence of brittleness characteristic for usual high-strength steels. Fracture toughness (KIC) is about 110 MPa√m – much more than in many other steels with comparable strength levels, thus making AerMet 100 a very reliable material for the production of critical parts.

These qualities of AerMet 100 make it an ideal choice for aerospace structures requiring maximum strength: landing gears, jet engine shafts, drive shafts, actuators, and high-performance fasteners. Moreover, fatigue resistance to cyclic loading increases the operating life of components.

However, processing of AerMet 100 is rather complicated since the material has to be first subjected to solution treatment, then cryogenic and ageing treatments. Machining of the steel should be performed in the state of solution treatment prior to heat treatment.