Knives That Make the Cut are

Made of CermeTi® Titanium Metal Matrix Composites

 

CermeTi Knives

CermeTi Knives

     Dynamet Technology, Inc. has developed a new family of metal matrix composite (MMC) materials that are being used to make lightweight knife blades.  These state-of-the-art materials called CermeTi® are made by Dynamet’s advanced powder metal manufacturing technology.  CermeTi® MMCs consist of a ductile titanium alloy with fine ceramic particles dispersed uniformly throughout the alloy.  This combination results in a very tough, durable material that has the hardness of ceramic and the ductility of metal.

      The result is a lightweight knife blade that:

  • Is harder, stiffer and significantly more wear resistant than titanium.

  • Is not brittle like conventional ceramic knives.

  • Has excellent sharpness retention that compares favorably with the best of the high-performance knife blade materials.

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    CermeTi® samples were tested by CATRA, Sheffield , UK .  CATRA is the only independent testing laboratory in the world that evaluates knife blade sharpness to an international standard (ISO 8442-5).  Two CermeTi® compositions, CermeTi C10 and CermeTi B5, were tested:.  Both compositions easily passed the ISO standard.  CATRA rated the sharpness retention of CermeTi C10 as “very good” and CermeTi B5 as “excellent”.  CATRA’s results, shown below, illustrate that CermeTi C10 has sharpness retention comparable to martensitic steel and Rc 56 stainless steel while CermeTi B5 outperforms Rc 63 tool steel.

    Very good > 370

    Excellent > 500

                        A test of CermeTi® knife blades by an internationally known custom knife maker with a reputation for innovation showed that the sharpness retention of CermeTi® ranked best of the high-performance knife blade materials tested including, CPM 42OV, CPM 440V, D-2, BG-42 (Cr-Mo stainless steel), ATS-34 stainless steel, 440-C, Talonite and Stellite 6K.