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Technical Information — CTS-XHP

CTS-XHP is a powder metallurgy, high-carbon, high chromium stainless steel with very good stainless properties at high hardness. It can be heat treated to 64HRc and its fine carbide distribution and fine grained microstructure greatly enhance cutting performance in knife blade applications.

Typical Chemical Composition

  • Carbon 1.60%
  • Silicon 0.40%
  • Manganese 0.50%
  • Chromium 16.00%
  • Molybdenum 0.80
  • Vanadium 0.45%
  • Nickel 0.35%

Common Applications

  • Knives
  • Kitchen Cutlery
  • Surgical Tools

Knife Steel Comparison Chart

Physical Properties

  • Modulus of Elasticity …30 psi x 106 …(207 GPa)
  • Density …0.275 lb/in3
  • Annealed Hardness …230-255 Brinell Hardness(BHn)
  • Thermal Conductivity(212°F) …16.0 BTU/hr./ft/°F

Heat Treatment

Preheat: 1400/1450°F, equalize.

High Heat (Austenitizing): 1850-2000°F, hold 20-45 minutes at temperature. Quench: Air, positive pressure vacuum, interrupted oil. Cool to 150°F. After quenching the alloy can be refrigerated at nominally -100°F for one hour and warmed to room temperature to minimize retained austenite.

Temper: 250-800°F, hold two hours at temperature. Tempering between 800 and 1100°F should be avoided due to a decrease in both toughness and corrosion resistance.

Heat Treat Response-Hardening Temp. 1950°F
Tempering Temperature °F HRC
AQ 64
300 64
400 62.5
500 60.5

Annealing: Heat to 1550/1600°F, hold two hours, slow cool 25°F/hour to 1200°F, then air or furnace cool to room temperature.
Heat to 1600°F, hold two hours, cool to 1300°F, hold four hours, then air cool.

Stress Relieving:

Annealed Material: Heat to 1200/1250°F, hold two hours, cool in still air

Hardened Material: Heat to 25°F below tempering temperature, hold two hours, cool in still air.

Service Center Locations:


  • Charlotte, NC

    321 West 32nd Street
    Charlotte, NC 28206
    Tel: 704-372-3073
    Fax: 704-342-0985
  • Chicago, IL

    4501 W Cortland St
    Chicago, IL 60639
    Tel: 773-772-0300
    Fax: 773-772-0465
  • Dallas, TX

    1101 Ave. H East
    Arlington, TX 76011
    Tel: 817-649-2800
    Fax: 817-633-8142
  • Dayton, OH

    2800 Old Springfield Road
    Vandalia, OH 45377
    Tel: 937-885-8400
    Fax: 937-885-5973
  • Detroit, MI

    1201 Piedmont
    Troy, MI 48083
    Tel: 248-528-0332
    Fax: 248-528-1977
  • Meadville, PA

    99 W. Poplar St.
    Meadville, PA 16335
    Tel: 814-337-8804
    Fax: 814-337-8808
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