420J2/420J1/420F stainless steel with a certain wear and corrosion resistance, hardness, its price is lower stainless steel ball in a class, for general requirements for stainless steel work environment. Applicable to all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation vehicles, and household appliances. Used for manufacture of anti-air, steam, water, corrosion and oxidation of acid components. 420J1 stainless steel: quenched high hardness, good corrosion resistance (magnetic) 420J2 stainless steel after quenching, the hardness increased than 420J1 steel (magnetic).
Chemical Composition (%)
C 0.26-0.4
Mn <1.0
P 0.035
Si 1.0
Cr 14.0
Mo 1.0
Ni 3.0
S 0.025
N -
420J2-3Cr13
3Cr13 steel is martensitic stainless steel, in the quenched and tempered before use. And 1Cr13, 2Cr13 steel relative, has a higher strength, hardness and hardenability, but its corrosion resistance and thermal stability below 700 ℃ than 1Cr13, 2Cr13 steel is low. Bad cold and welding properties, heat treatment immediately after welding to prevent cracking. In the annealed condition with a good cut-parallel performance.
Chemical composition:
Element C Mn Si Cr Ni S P
Content% 0.25 ~ 0.34 ≤ 0.60 ≤ 0.60 12.00 ~ 14.00 ≤ 0.60 ≤ 0.030 ≤ 0.030
- Heat Treatment: bar and forgings: 1000 ~ 1050 ℃ oil quenching or air-cooled, 200 ~ 300 ℃ tempering. Plate: 740 ~ 780 ℃ high temperature annealing or tempering.
- Melting and casting process: Available EAF + ESR methods such as electric arc furnace smelting.
The hardness of different heat treatment system:
Heat Treatment HRC HRB HB Kgf/mm2
870 ~ 900 ℃ - 81 155 ~ 180
Intermediate annealing 760 ℃, air-cooled - 80 ~ 92 205 ~ 225
980 ~ 1050 ℃ oil-cooling 53 ~ 56--530 ~ 560
980 ~ 1050 ℃ oil quenched +150 ~ 370 ℃ tempering 48-53--470 ~ 530
Oxidation resistance: 700 ℃ the following in a stable oxidation resistance.
Chemical Composition (%)
C 0.26-0.4
Mn <1.0
P 0.035
Si 1.0
Cr 14.0
Mo 1.0
Ni 3.0
S 0.025
N -
420J2-3Cr13
3Cr13 steel is martensitic stainless steel, in the quenched and tempered before use. And 1Cr13, 2Cr13 steel relative, has a higher strength, hardness and hardenability, but its corrosion resistance and thermal stability below 700 ℃ than 1Cr13, 2Cr13 steel is low. Bad cold and welding properties, heat treatment immediately after welding to prevent cracking. In the annealed condition with a good cut-parallel performance.
Chemical composition:
Element C Mn Si Cr Ni S P
Content% 0.25 ~ 0.34 ≤ 0.60 ≤ 0.60 12.00 ~ 14.00 ≤ 0.60 ≤ 0.030 ≤ 0.030
- Heat Treatment: bar and forgings: 1000 ~ 1050 ℃ oil quenching or air-cooled, 200 ~ 300 ℃ tempering. Plate: 740 ~ 780 ℃ high temperature annealing or tempering.
- Melting and casting process: Available EAF + ESR methods such as electric arc furnace smelting.
The hardness of different heat treatment system:
Heat Treatment HRC HRB HB Kgf/mm2
870 ~ 900 ℃ - 81 155 ~ 180
Intermediate annealing 760 ℃, air-cooled - 80 ~ 92 205 ~ 225
980 ~ 1050 ℃ oil-cooling 53 ~ 56--530 ~ 560
980 ~ 1050 ℃ oil quenched +150 ~ 370 ℃ tempering 48-53--470 ~ 530
Oxidation resistance: 700 ℃ the following in a stable oxidation resistance.
