420 Stainless Steel

420 stainless steel is a martensitic stainless steel, with certain wear resistance and corrosion resistance and high hardness characteristics,
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Product Details

420 stainless steel is a martensitic stainless steel, with certain wear resistance and corrosion resistance and high hardness characteristics, suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meter, transportation tools, household appliances, etc. Mainly used for making parts which resistant to atmospheric, water vapor, water and oxidizing acid corrosion.


Standard: AISI、ASTM

420 stainless steel is 420 "blade grade" martensitic steel, similar to brucellosis high chromium steel, the earliest stainless steel. 420 has certain wear resistance and corrosion resistance and high hardness, the price of stainless steel ball is a lower class, suitable for working environment with common requirement of stainless steel.


420 stainless steel is suitable for all kinds of precision machinery, bearings, electrical equipment, instruments, meter, transportation tools, household appliances, etc. Mainly used for making parts which 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 (MPa): Quenching and tempering, ≥635

Conditional yield strength (MPa) : Quenching and tempering, ≥440

Elongation (%): Quenching and tempering, ≥20

Section shrinkage (%): Quenching and tempering, ≥50

Impact energy Akv (J): Quenching and tempering, ≥63

Hardness: Annealing ≤223HB; Quenching and tempering ≥192HB


SUS420 steel high toughness, high hardness air cooling hardened high chromium tool steel, better hardness and toughness than SKD steel, high mirror, high corrosion resistance.The heat treatment size changes little.


Product features:

SUS420 suitable for line cutting processing, for stamping, drawing and rubbing die high mirror high precision die.Camera, cosmetic container, transparent cover, transparent film, etc.


Chemical composition (%):

C: 0.26-0.40

Si: ≤1.00

Mn: ≤1.00

P: ≤0.040

S: ≤0.030

Cr: 12.00-14.00

Ni: ≤0.75


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