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420 Grade Stainless Steels

420 Grade

420 (1.4021) Grade Stainless Steel

420 Grade Stainless Spring Steel Strip is a martensitic stainless steel containing 12.0-14.0% Cr (Chromium). According to EN standards, it is referred to as 1.4021 or X20Cr13. It is also commonly known in the market as SAE/AISI 420. The high chromium content forms a chromium oxide layer on the surface, giving the material its stainless property. With high hardness values ( 45-51 HRc), 420 Grade Stainless Steel offers moderate resistance to corrosion and wear.

Technical Specifications of 420 Grade Stainless Spring Steel

420 Grade Stainless Spring Steel Strips are widely used due to their excellent heat treatment capabilities, magnetic properties, and spring characteristics.

Features of 420 Grade Stainless Spring Steel Strips

  • Moderate corrosion and wear resistance
  • Average weldability
  • High magnetic properties

Applications of 420 Grade Stainless Spring Steel Strips

420 Grade Stainless Spring Steel Strips are widely used in various fields, including machinery, oil and petrochemical industries, food production facilities, and the decoration sector.

Chemical Compositions %

C Mn max. Si max. Cr P max. S max.
0,16-0,25 1,50 1,00 12,0-14,0 0,040 0,015

Mechanical Properties

Rm max. N/mm² HV max.
1500-1800 450-550

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