● Characteristics and Application Range:

● Chemical Composition:

Manganese Mn: ≤0.80

Sulfur S: ≤0.030

Phosphorus P: ≤0.035

Chromium Cr: 12.00–14.00

Nickel Ni: Allowed ≤0.60

Vanadium V:

● Mechanical Properties:

Hardness: Annealed, ≤201 HB; Quenched and Tempered, ≥50 HV

● Heat Treatment Specifications and Metallographic Structure:

Heat Treatment Specifications: 1) Annealing, 800–900°C slow cooling or approx. 750°C rapid cooling; 2) Quenching, 1050–1100°C oil cooling;

3) Tempering, 200–300°C rapid cooling.

Metallographic Structure: The structural characteristic is martensitic.

Material delivered in annealed condition. Quality certificate provided.

Compliant with national standards, third-level flaw detection. Customized as per customer requirements: polished, black skin, or turned finish.