SUS420J2 stainless steel
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 of 1000 ~ 1050 ℃,
Tempering temperature of 200 ~ 500 ℃,
Hardness of 50 ~ 55HRC
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 of 1000 ~ 1050 ℃,
Tempering temperature of 200 ~ 500 ℃,
Hardness of 50 ~ 55HRC
