2Cr25N heat-resistant steel
Material Name: Heat-resistant steel bars
Grade: 2Cr25N
Standard: GB / T 1221-1992
● 2Cr25N Features and Scope:
2Cr25N heat-resistant steel high temperature corrosion resistance, 1082 ℃ the following oxidation does not produce easy to peel off the skin, 2Cr25N heat-resistant steel used in the combustion chamber.
● 2Cr25N chemical composition:
Carbon C: ≤ 0.20
Si Si: ≤ 1.00
Manganese Mn: ≤ 1.50
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.040
Chromium Cr: 23.00 ~ 27.00
Cu Cu: allowed to contain ≤ 0.30
N N: ≤ 0.25
● 2Cr25N mechanical properties:
Tensile strength σb (MPa): ≥ 510
Conditions yield strength σ0.2 (MPa): ≥ 275
Elongation δ5 (%): ≥ 20
Reduction of area ψ (%): ≥ 40
Hardness: ≤ 201HB
● 2Cr25N heat treatment and microstructure specifications:
Heat treatment specifications: 780 ~ 880 ℃ annealing fast-cooling.
Microstructure: Organizing for the ferrite.
● 2Cr25N Delivery status: the state generally regulate heat delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.