High Speed Tool Steel Sheet
We sell a wide variety of high speed steels in sheet, plate and cut to size pieces.
Standard high speed steels are used in high speed cutting tool applications. We carry M type, T type and CPM® grades of high speed steels. Below are what we carry and a summary of their key characteristics. Molybdenum or M series steels contain molybdenum, tungsten, chromium, vanadium, cobalt and carbon as the principle alloying elements. M series steels are typically tougher that T series steels at the same hardness. Otherwise, their properties are similar. The T series steels use tungsten, chromium, vanadium, cobalt and carbon as the principle alloying elements. The T series steels exhibit high red hardness and wear resistance. They are also less susceptible to decarburization at high temperatures than M type steels. The high alloy content of T type steels produces a large number of hard, wear resistant carbides. The most wear resistant steel of this group is T-15.
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We carry four CPM® grades of high speed steel. CPM Rex M-4® and CPM T-15® are well known and have similar chemistries to wrought M-4 and T-15. The main difference is the fine carbide structure that the CPM® process makes grinding these grades much easier. CPM Rex 20® and CPM Rex-75® are highly alloyed grades that cannot be manufactured by conventional steelmaking. CPM Rex 20® is cobalt free and yet outperforms M-42. CPM Rex-76® offers a good combination of toughness and high red hardness and also makes an excellent substrate for coatings such as TiAIN. CPM Rex-76®can be heat treated to Rc 68 to 70.
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