Grade: 0Cr25Ni20 (2520)
Standard: GB / T 1220-1992
● Features and application:
Better oxidation resistance than 0Cr23Ni13. In fact many use as a heat-resistant steel.
● Chemical Composition:
Carbon C: ≤ 0.08
Si Si: ≤ 1.00
Manganese Mn: ≤ 2.00
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035
Chromium Cr: 24.00 ~ 26.00
Ni-Ni: 19.00 ~ 22.00
● Mechanical Properties:
Tensile strength σb (MPa): ≥ 520
Conditions yield strength σ0.2 (MPa): ≥ 205
Elongation δ5 (%): ≥ 40
Reduction of area ψ (%): ≥ 50
Hardness: ≤ 187HB; ≤ 90HRB; ≤ 200HV
● Heat treatment and microstructure specifications:
Standard heat treatment: solution 1030 ~ 1180 ℃ fast-cooling.
Microstructure: Organizing for the austenitic type.
● Delivery status: normal to heat treatment delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.
