13Cr Martensitic Stainless (var. 3)

metal

A cobalt-strengthened 13% chromium martensitic stainless steel with molybdenum and nitrogen additions, designed for high-strength applications requiring corrosion and heat resistance. This variant achieves excellent strength-to-weight performance through a carefully balanced alloying strategy—cobalt provides solid-solution hardening, molybdenum enhances corrosion resistance and strength at elevated temperature, and controlled carbon/nitrogen levels enable martensitic hardening without excessive brittleness. Industrial adoption focuses on aerospace turbine components, high-pressure valve bodies, and demanding corrosion-resistant fasteners where conventional 12–13Cr stainless steels cannot deliver the required strength envelope; engineers select this composition when operating temperatures exceed 400°C or when combined mechanical and corrosion demands exceed single-phase austenitic stainless or lower-alloyed martensitic alternatives.

aerospace turbine blades and discshigh-pressure hydraulic valve bodiesgeothermal well downhole toolscorrosion-resistant fastenerssteam turbine rotorsoil and gas pipeline equipment

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Elongation at Break(εf)
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Ultimate Tensile Strength(σUTS)
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Yield Strength (0.2% offset)(σy)
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Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

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.