420 Stainless Steel Round Bar

420 stainless steel is a martensitic stainless steel, with certain wear resistance and corrosion resistance, high hardness and other characteristics, applicable to various types of precision machinery, bearings, electrical, equipment, instrumentation, instrumentation, transportation tools, household appliances. It is used for the manufacture of parts that are resistant to atmospheric, water vapor and oxidizing acid.

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): Quenching and Tempering, ≥635

Conditions Yield Strength σ0.2 (MPa): Quenching and Tempering, ≥440

Elongation Rate δ5(%): Quenching and Tempering, ≥20

Shrinkage Rate of Section:ψ (%) Quenching and Tempering, ≥50

Impact Power AKV (J): Quenching and Tempering, ≥63

Hardness: annealing, ≤223HB; Quenching and Tempering, ≥192HB