05Cr15Ni6Nb

Stainless Steel

05Cr15Ni6Nb

High transverse-toughness 17-4PH modification. (GB/T 20878; equiv ASTM XM-12 / AMS 5659). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.07
CR14
NI3.5
CU2.5
NB0.15

Mechanical Properties

Tensile (H1100):≥1070 MPa;Yield:≥1000 MPa;Elong:≥14%

Chinese Standard

T 20878 05Cr15Ni6Nb

Equivalent Standards

ASTM XM-12 / AMS 5659

Applications

高横向韧性的17-4PH改良。,"Bar

Available Forms

Forging"

Uses

Ferritic stainless steel with good resistance to stress-corrosion cracking and oxidation, plus formability and lower cost. Used for automotive trim, exhaust systems, domestic appliances, decorative and welded structures.

Heat Treatment

Annealed at 780–850 °C and air cooled; stabilize at 600–800 °C to avoid 475 °C embrittlement; not hardenable by heat treatment.

Precautions

Avoid welding in the 475 °C embrittlement and sigma-phase ranges; use matched filler and minimize heat input. Good resistance to stress-corrosion cracking.

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