Stainless Steel: 3Cr13
Standard: GB / T 1220-1992
● Features and Scope:
2Cr13 higher than hardness after quenching, as cutting tools, nozzle, valve seats and valves.
● Chemical Composition:
Carbon C: 0.26 ~ 0.35
Si Si: ≤1.00
Manganese Mn: ≤1.00
Sulfur S: ≤0.030
Phosphorus P: ≤0.035
Chromium Cr: 12.00 ~ 14.00
Ni: to allow contains ≤0.60
● Mechanical Properties:
Tensile strength σb (MPa): quenching and tempering, ≥735
Conditions yield strength σ0.2 (MPa): quenching and tempering, ≥540
Elongation δ5 (%): quenching and tempering, ≥12
Reduction of area ψ (%): quenching and tempering, ≥40
Impact energy Akv (J): quenching and tempering, ≥24
Hardness: annealing, ≤235HB; quenching and tempering, ≥217HB
● Heat treatment and microstructure specifications:
Heat treatment specifications: 1) annealing, 800 ~ 900 ℃ slow cooling or about 750 ℃ rapid cooling; 2) quenching, 920 ~ 980 ℃ oil cooling; 3) tempering, 600 ~ 750 ℃ 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. |
