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, extension rate in EL (%) ≥ 12, hardness ≥ HBW217
Reduction of /% ≥ 40 Charpy impact value / (J/cm2) ≥ 29 [2] heat treatment / ℃
Quenching temperature of 1000 ~ 1050 ℃, tempering temperature of 200 ~ 500 ℃, Hardness 50 ~ 55HRC. [3]
Physical properties
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 ℃
Features and Scope
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 a corrosion
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, extension rate in EL (%) ≥ 12, hardness ≥ HBW217
Reduction of /% ≥ 40 Charpy impact value / (J/cm2) ≥ 29 [2] heat treatment / ℃
Quenching temperature of 1000 ~ 1050 ℃, tempering temperature of 200 ~ 500 ℃, Hardness 50 ~ 55HRC. [3]
Physical properties
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 ℃
Features and Scope
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 a corrosion
