22Cr21Ni12N

Stainless Steel

Austenitic valve steel (2Cr21Ni12N)

Mechanical Properties

Tensile ≥820MPa Elongation ≥15%

Chinese Standard

GB/T 20878 GB/T 1221

Applications

Engine exhaust valves, valve seats, high-temperature fasteners

Available Forms

Bar, wire, forging

Uses

21-12N valve steel (S30850), 750°C exhaust valves

Heat Treatment

Solution 1100-1180°C, water quench; age 700-780°C

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