CTS® BD1N alloy is a nitrogen-bearing, high-carbon chromium martensitic steel balanced to provide superior hardness capability over BD1, with a tempered hardness capability of HRC 60-63. With corrosion resistance similar to 410, it can resist corrosion from mild atmospheres, freshwater, steam, ammonia, many petroleum products, organic materials, and several mild acid environments. The CTS® family of alloys offer superior edge retention and surface finish, along with an ability to be machined to a fine edge and consistent heat-treatability from lot to lot.

Type Analysis

  • Carbon (Maximum) 0.85-0.95
  • Phosphorus (Maximum) 0.03
  • Silicon (Maximum) 1
  • Manganese (Maximum) 1
  • Sulfur (Maximum) 0.01
  • Chromium (Nominal) 15.00-17.00
  • Molybdenum (Nominal) 0.5
  • Iron (Nominal) Balance
  • Nitrogen (Nominal) 0.10-0.15


Cutlery applications that demand high hardness, edge retention and corrosion resistance.

Applicable Specifications




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