Stainless Steel: 1Cr12
Standard: GB / T 1220-1992
● Features and Scope:
As a good heat-resistant stainless steel turbine blades and parts of high stress.
● Chemical Composition:
Carbon C: ≤0.15
Si Si: ≤0.50
Manganese Mn: ≤1.00
Sulfur S: ≤0.030
Phosphorus P: ≤0.035
Chromium Cr: 11.50 ~ 13.00
Ni: to allow contains ≤0.60
● Mechanical Properties:
Tensile strength σb (MPa): quenching and tempering, ≥590
Conditions yield strength σ0.2 (MPa): quenching and tempering, ≥390
Elongation δ5 (%): quenching and tempering, ≥25
Reduction of area ψ (%): quenching and tempering, ≥55
Impact energy Akv (J): quenching and tempering, ≥118
Hardness: annealing, ≤200HB; quenching and tempering, ≥170HB
● Heat treatment and microstructure specifications:
Heat treatment specifications: 1) annealing, 800 ~ 900 ℃ slow cooling or about 750 ℃ rapid cooling; 2) quenching, 959 ~ 1000 ℃ oil cooling; 3) 700 ~ 750 ℃ tempering rapid cooling.
Microstructure: Organizing for the martensite type.
● Delivery status: to heat treatment delivery in general, the treatment types specified in the contract; not indicated, by not heat treatment delivery. |
