Micro-Melt® M48

UNS #T11348

Micro-Melt® M48 is a super high speed steel possessing abrasion resistance equal to T15 and superior red hardness to T15 and M42. It is heat treatable to HRC 70 and is a good candidate for special purpose cutting tools where other ASTM M40 series high speed steels are inadequate Micro-Melt M48 alloy is suggested for use where high red hardness, high abrasion resistance, and good toughness are required. Many of the benefits realized in the use of Micro-Melt® powder metals, including ease of grinding, improved response to heat treatment, greater wear resistance, and increased toughness of the finished tool, are a direct result of the refined microstructure featuring smaller, more uniformly distributed carbide particles and a finer grain size, as well as the lack of segregation in the powder metallurgy product. In addition, Carpenter Technology's unique hot rolling and rotary forging capabilities impart minimal distortion characteristics to these alloys.

Type Analysis

  • Carbon (Nominal) 1.55
  • Tungsten (Nominal) 10
  • Sulfur (Maximum) 0.07
  • Chromium (Nominal) 4
  • Cobalt (Nominal) 9
  • Molybdenum (Nominal) 5.25
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 3.1


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