Material Name: stainless steel rods Grade: 11Cr17 Standard: GB / T 1220-1992 ● Features and Scope: In all stainless steel, heat-resistant steel, the highest hardness, as nozzles, bearings. ● Chemical Composition: Carbon C: 0.95 ~ 1.20 Si Si: ≤1.00 Manganese Mn: ≤1.00 Sulfur S: ≤0.030 Phosphorus P: ≤0.035 Chromium Cr: 16.00 ~ 18.00 Ni: to allow contains ≤0.60 Mo Mo: can join ≤0.75 ● Mechanical Properties: Hardness: annealing, ≤269HB; quenching and tempering, ≥58HV ● Heat treatment and microstructure specifications: Heat treatment specifications: 1) annealing, 800 ~ 920 ℃ slow cooling; 2) quenching, 1010 ~ 1070 ℃ oil cooling; 3) tempering, 100 ~ 180 ℃ 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 |