12Cr-8Ni-2.9Mo Stainless

metal

12Cr-8Ni-2.9Mo is a precipitation-hardened martensitic stainless steel strengthened by aluminum and cobalt additions, placing it in the superalloy-stainless steel family (similar to custom 450/17-4PH variants). It is designed for high-strength, corrosion-resistant applications requiring superior strength-to-weight ratios at elevated temperatures, commonly found in aerospace fasteners, gas turbine engine components, and demanding industrial equipment where both corrosion resistance and mechanical performance are critical. The aluminum and cobalt content enables precipitation hardening, making it notably stronger than conventional martensitic stainless steels while maintaining corrosion resistance; it competes with premium grades like A286 and custom PH stainless variants in aerospace and energy sectors.

aerospace fasteners and structural componentsgas turbine engine partshigh-temperature corrosion-resistant applicationsoil and gas equipmentsteam turbine componentsnaval and military applications

Compliance & Regulations

?ISO 10993?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Elongation at Break(εf)	—	-	—	—
Ultimate Tensile Strength(σUTS)	—	ksi	—	—
Yield Strength (0.2% offset)(σy)	—	ksi	—	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

Quality & Standards

Industry-Specific

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.