High Speed Steels are highly alloyed steels designed to cut other materials efficiently at high speeds while withstanding extreme heat generated at the tools cutting edge. These steels are heat treated and used at high hardnesses (62 HRc and above), maintaining the high hardness at elevated temperatures while having enough impact toughness to handle interrupted cut tooling applications.ss

High Speed Steels Stock Sizes

M2 view technical info

M2 is the most popular grade of high speed steel worldwide and commonly used in a wide variety of cutting tools and metal forming applications.
Rounds: .109" dia through 10.125" dia
Flats: .055" thick through 3" thick saw cut widths up to 36"

M2 ESR view technical info

M2 ESR is the most popular grade of high speed steel and commonly used in a variety of cutting tools and metal forming applications.

Rounds: .250" dia through 10.125" dia

M4 view technical info

M4 high speed steel has a combination of high carbon and vanadium which offers excellent abrasive wear resistance.

Rounds: .500" dia through 6.000" dia

M42 view technical info

M42 is premium high speed steel containing cobalt with an attainable hardness of 68 HRC.


Rounds: .250" dia through 3.500" dia

Flats: .780" thick through 1.875" thick


M50 view technical info

M50 is a general purpose high speed steel .M50 has a good balance of toughness, wear resistance, and red hardness.
M50 is used for metal cutting, wood and plastics cutting and cold work tooling.