3Cr13 Stainless Steel 

 Stainless Steel: 3Cr13 Standard: GB / T 1220-1992 ● Features and Scope: martensitic stainless steel grades commonly used are 1Cr13, 3Cr13, etc., due to the higher carbon content, it has a high strength, hardness and wear resistance, but corrosion resistance somewhat less for higher mechanical properties, corrosion resistance requirements are generally some of the parts, such as springs, turbine blade, for cutting tools, nozzles, valve seats, valves / hydraulic valve. Such steel is hardened, tempered after use. ● Chemical Composition: C: 0.26 ~ 0.35 
 3Cr13 Stainless Steel 
 Si Si: ≤ 1.00 Manganese Mn: ≤ 1.00 S S: ≤ 0.030 P P: ≤ 0.035 Cr-Cr: 12.00 ~ 14.00 Ni: to allow containing ≤ 0.60 ● Mechanical Properties: Tensile 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: Annealed, ≤ 235HB; quenching and tempering, ≥ 217HB ● Heat treatment and microstructure specifications: Heat treatment specifications: 1) annealing, 800 ~ 900 ℃ slow cooling or rapid cooling of about 750 ℃; 2 ) quenching, 920 ~ 980 ℃ oil cooling; 3) temper, 600 ~ 750 ℃ ??fast-cooling. Microstructure: Organizing for the martensite type. ● Delivery status: generally heat treatment delivery, the treatment types specified in the contract; not indicated, according to the non-heat treatment delivery