24 July 2021 400 Series Stainless Steel
420 Stainless Steel Bar
420 stainless steel is a martensitic stainless steel with certain wear resistance and corrosion resistance, and high hardness. It is suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation tools, household appliances, etc. It is mostly used to manufacture parts that are resistant to atmospheric, water vapor, water and oxidizing acid corrosion.
420 stainless steel, 420 stainless steel is 420 "cutting tool grade" martensitic steel, similar to the earliest stainless steel such as Brinell high chromium steel. 420 has a certain degree of wear resistance and corrosion resistance, high hardness, and its price is the lower category of stainless steel balls. It is suitable for working environments that generally require stainless steel. 420 stainless steel is suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation tools, household appliances, etc. It is mostly used to manufacture parts that are resistant to atmospheric, water vapor, water and oxidizing acid corrosion.
Chemical Composition:
C: 0.16~0.25
Mn: ≤1.00
Si: ≤1.00
Cr: 12.0~14.0
Ni: ≤0.75
P: ≤0.04
S: ≤0.03
Mechanical Properties:
Tensile strength σb (MPa): quenched and tempered, ≥635
Conditional yield strength σ0.2 (MPa): quenched and tempered, ≥440
Elongation δ5 (%): quenching and tempering, ≥20
Reduction of area ψ (%): quenching and tempering, ≥50
Impact energy Akv (J): quenching and tempering, ≥63
Hardness: annealing, ≤223HB; quenching and tempering, ≥192HB