17Cr-5Ni Duplex Stainless

metal

17Cr-5Ni duplex stainless steel is a two-phase ferritic-austenitic stainless alloy that combines moderate chromium content with balanced nickel addition and significant aluminum and cobalt alloying for enhanced strength and hardness. This composition targets applications requiring good corrosion resistance alongside elevated strength, particularly in moderately aggressive environments where standard austenitic stainless steels may be over-specified or where weight and hardness matter. The duplex microstructure and secondary hardening elements (aluminum, cobalt, vanadium) suggest use in applications demanding higher yield strength than conventional duplex grades, though the relatively modest nickel and chromium levels position it below high-end duplex or super-duplex materials in corrosion resistance rankings.

fasteners and mechanical hardwarepump and valve trim ringsspring washers and clipselevated temperature corrosion servicewear-resistant machine componentschemical processing 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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ksi——
Yield Strength (0.2% offset)(σy)
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ksi——
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.
17Cr-5Ni Duplex Stainless — Properties & Data | MatWorld