Standard: GB / T 1220-1992
Features and application:
Corrosion-resistant stainless steel, eliminating the heat treatment does not produce heat-induced deformation, with super-mirror finish performance, in the annealed condition with good machining properties. For corrosive gases or fluorinated plastics flame retardant plastic mold of corrosion.
Chemical composition:
C 0.26-0.40 Mn ≤ 1.00 Si ≤ 1.00, P ≤ 0.040 S ≤ 0.030 Cr 12.00-14.00 Ni ≤ 0.60 [1]
Performance:
Yield strength (N/mm2) ≥ 540, tensile strength (N/mm2) ≥ 740, elongation EL (%) ≥ 12, hardness ≥ HBW217
Reduction of /% ≥ 40 Charpy impact value / (J/cm2) ≥ 29 [3]
Heat Treatment / ℃ quenching temperature 1000 ~ 1050 ℃, tempering temperature 200 ~ 500 ℃, 50 ~ 55HRC hardness
