0Cr25Ni20 heat-resistant steel
Detailed description:
Standard: GB/T 1220-1992
Characteristics and Scope of Application:
The antioxidant activity is better than 0Cr23Ni13. Actually, it is mostly used as heat-resistant steel.
0Cr25Ni20 heat-resistant stainless steel, domestic grade 0Cr25Ni20, American grade 310S, also known as 2520, is used for the manufacturing of high-temperature furnace tubes
Chemical composition:
Carbon C: ≤ 0.08
Silicon Si: ≤ 1.00
Manganese Mn: ≤ 2.00
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035
Chromium Cr: 24.00-26.00
Nickel Ni: 19.00-22.00
Mechanical properties:
Tensile strength σ b (MPa): ≥ 520
Conditional yield strength σ 0.2 (MPa): ≥ 205
Elongation rate δ 5 (%): ≥ 40
Shrinkage rate of cross-section (%): ≥ 50
Hardness: ≤ 187HB; ≤ 90HRB;≤ 200HV
Heat treatment specifications and metallographic structure:
Heat treatment specification: rapid cooling at 1030-1180 ℃ for solid solution.
Metallographic structure: The structural characteristics are austenitic.
Delivery status: Generally delivered in a heat-treated state, with the type of heat treatment specified in the contract; Unless otherwise specified, delivery shall be made in the non heat treated state
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