40Cr20Ni3Mo

Stainless Steel

Cr-Ni-Mo martensitic heat-resistant steel per GJB 30A/GB/T 15007 designation (composition nominal)

Mechanical Properties

Tensile ≥880MPa Yield ≥735MPa Elongation ≥10% (typical Q+T)

Chinese Standard

GJB 30A GB/T 15007

Applications

Cr-Ni-Mo martensitic heat-resistant steel; turbine parts, high-temperature fasteners

Available Forms

Bar, forging, plate

Uses

Aviation and high-temperature structural service (family data)

Heat Treatment

Quench 950-1050°C oil, temper 600-700°C

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