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Quick Details

  • Grade: 400 Series
  • Standard: GB, JIS
  • Length: cut to length, straightened
  • Thickness: 3.0 - 16.0mm
  • Width: 250mm approx.
  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: Changjiang
  • Model Number: 9Cr13MoVCo
  • Type: Plate
  • Application: high quality beauty scissors, knives etc.
  • Certification: SGS
  • Surface: black or hot rolled, pickled, shot blasted
  • Dimensions: Customized

Packaging & Delivery

Packaging Details Seaworthy packing.

High carbon cobalt stainless steel plates 9Cr13MoVCo



Forged high-carbon stainless steel with increased levels of cobalt added for greater edge retention. 

It offers a higher level of corrosion resistance at a great value.

* aka 9Cr13CoMoV ; 9Cr13, 913 in short.



Has about 0.95% carbon. This steel is comparable to 440C.

It has more vanadium and less chromium than 440C, so it is slightly tougher, but also a little less rust resistant.


Chemical composition for 9Cr13MoVCo % nominal )


* Ni  0.158


AUS-100.95 - 1.100.80 max1.00 max0.040 max0.005 max13.00 - 14.500.10 - 0.300.10 - 0.25


Delivery state

soft annealed


9Cr13MoVCo obtains about HRC 58- 60 after heat treatment.


Chemical composition of knife steel
The chemical composition of a knife steel must be balanced, not over alloyed, and precise.
The specification tolerances must be tight in order to secure a high consistent quality in the finished knife. 
Here is a breakdown of the most common elements in knife steel:

Carbon (C)
The main driver for hardness. Too much carbon however makes it more difficult for the material to produce martensite 
and thereby deep freezing is necessary to achieve high hardness. 
The hardness is related to the amount of carbon dissolved in the steel matrix. 
By tying up chromium into carbides the carbon is indirectly decreasing corrosion resistance.

Chromium (Cr)
The main driver for corrosion resistance. 
The corrosion resistance achieved is related to the amount of Cr dissolved into the steel matrix and not related to the
nominal composition. Cr is also the main driver for carbide formation.

Molybdenum (Mo)
Drives carbide formation and has a small influence on hardness and corrosion resistance in martensitic stainless grades.

Vanadium (V)
A strong carbide former. The vanadium carbides are also very stable and do not dissolve during heat treatment.

Nitrogen (N)
Hardness driver like carbon but does not have the same negative effect on corrosion resistance. 
Nitrogen is not commonly used in these applications since it is difficult to achive significant levels of nitrogen in 
conventional steel production.

Sulphur (S)
Forms sulphide inclusions which have a negative influence on the initiation of pitting corrosion.

Manganese (Mn), Phosphorus (P) and Silicon (Si)
These elements make no significant contributions. The general rule is to keep these as low as possible.

The most important thing to remember is that hardness and corrosion resistance are related to the composition of the 
matrix after hardening, not the nominal chemical composition of the steel. 
The excess amounts of these elements will form large primary carbides during casting and will not add to the hardness
or corrosion resistance of the finished knife.

Primary carbides will make the knife more brittle and more difficult to sharpen than a fine-grain steel knife at the same hardness. The steels containing large primary carbides will also cause very high tool wear for 
blanking tools, making them unsuitable for blanking or stamping.


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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