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Master Bond adhesives
Latrobe Stark™ ASTM M4 High Speed Steel
Categories: Metal; Ferrous Metal; Alloy Steel; Carbon Steel; High Carbon Steel; Tool Steel

Material Notes: STARK (M4) is a super high speed steel with very high carbon and vanadium contents for exceptional abrasion resistance. It is well suited for premium cutting tools of all types, particularly those used for machining abrasive alloys, castings, and heat-treated materials. The high carbon content enables Stark to be hardened in excess of 65 HRC. However, the high hardness and high vanadium carbide content make Stark more difficult to grind after heat treatment compared to Double Six (M2) and other high speed steels. Typical applications for Stark high speed steel include form tools, spade drills, end mills, taps and dies, punches and broach inserts.

Information Provided by Timken Latrobe Steel.

Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.

Vendors:
Available Properties
  • Specific Gravity
  • Density
  • Hardness, Rockwell C, Oil Quenched from 1232°C
  • Hardness, Rockwell C, Oil Quenched from 1204°C
  • Hardness, Rockwell C, Oil Quenched from 1149°C
  • Modulus of Elasticity
  • Machinability, 1% Carbon Steel
  • Izod Impact Unnotched, Oil Quenched at 1204°C; 538°C Temper Temperature
  • Izod Impact Unnotched, Oil Quenched at 1204°C; 482°C Temper Temperature
  • Izod Impact Unnotched, Oil Quenched at 1204°C; 622°C Temper Temperature
  • CTE, linear
  • CTE, linear
  • Processing Temperature, Critical Temperaure Ac1
  • Carbon, C
  • Chromium, Cr
  • Iron, Fe
  • Manganese, Mn
  • Molybdenum, Mo
  • Silicon, Si
  • Tungsten, W
  • Vanadium, V
  
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Manufacturer Notes:
Latrobe Steel

Category Notes
none

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