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Quick Details

  • Grade: 400 Series
  • Standard: AISI, ASTM, DIN, EN, GB, JIS
  • Thickness: 0.1 - 10.0mm
  • Width: 1250mm approx.
  • Length: in coils or straightened lengths
  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: Changjiang
  • Model Number: AISI 420
  • Technique: cold rolled and hot rolled
  • Application: medical instruments, knives, mechanical parts, moto brake disc etc.
  • Certification: SGS
  • dimension: customized
  • delivery state: cold rolled / annealed / hardened and tempered
  • surface: bright ( 2B ), polished or hot rolled, pickled, shot blasted
  • edge condition: slitted, or round corner, deburred
  • inside dia: 300 / 400 / 500mm / or upon request
  • weight of coil: customized

Packaging & Delivery

Packaging Details seaworthy packing ( pallets or wooden cases upon request ).

Martensitic stainless steel strips AISI 420


Martensitic stainless steels, high carbon-chromium, have been developed for a number of applications after cold rolling,

such as razor blades, surgical knives, scissors, cutlery, pressure diaphragms, valve components, bacon slicers and circlips.


According to the different carbon content of 420 grade, it can be divided into four categories:

20Cr13420 ( 420A )


1.4021 / X20Cr130.16 - 0.251.00 max1.50 max12.00 - 14.00
30Cr13420 ( 420B )420J2 1.4028 / X30Cr130.26 - 0.351.00 max1.50 max12.00 - 14.00
40Cr134204201.4031 / X39Cr130.36 - 0.421.00 max1.00 max12.50 - 14.50
-420 ( 420C / 420HC )4201.4034 / X46Cr130.43 - 0.501.00 max1.00 max12.50 - 14.50

420 ( 420D )4201.4037 / X65Cr130.58 - 0.701.00 max1.00 max12.50 - 14.50


* The chemical range listed as per EN 10088-2 standard.


Hardness comparsion

GradeHardness ( nominal )
420A50 HRC max.
420B53 HRC approx.
420C55 HRC approx.
420D60 HRC approx.


420A and 420B stainless steel grades are widely used in medical instruments, economical cutlery / knives,

mechanical parts and components etc.

420C stainless steel is applied in outdoor knives manufacturing, especially like Buck etc.

and our domestic brand Zhangxiaoquan uses this to produce kitchen knives etc.

420D stainless steel is superior to produce razor blades, surgical scalpels, speciality blades etc.

It achieves Rockwell hardness 60 approx. after suitable heat treatment. 


We are looking forward to your enquiries.

Please call +86 151 9025 7143, skype: paul_luhongxiang

or send an email to export @ ahoneststeel dot com 

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