SUS420J2 
 SUS420J2 
 Standard: GB / T 1220-1992 Features and application: corrosion-resistant stainless steel, eliminating the heat, not produce heat-induced distortion, ultra-glossy processing performance, in the annealed condition has good machining properties. For corrosive gases or flame retardant fluorinated plastic corrosion of the plastic mold. 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 Performance: yield strength (N/mm2) ≥ 225, tensile strength (N/mm2) ≥ 540, elongation EL (%) ≥ 18, annealed hardness ≤ HB235