M7 high-speed steel is used for making heavier construction drills where flexibility and extended drill life are extremely important. M7 molybdenum high-speed tool steels are mainly used for cutting tools in all machining operations. This steel exhibits good abrasion-resistance because of its carbon and vanadium contents. It is an excellent choice for premium tools which require an outstanding balance of red hardness, edge toughness and wear-resistance. It is especially suited for machining semi-hard, heat-treated steel at about 300-350 Brinell Hardness.
Other Known Names: 1.3348, HS 2-9-2, E M7, REX M7®, SKH 57, Tatmo-VN.
Griggs Steel Color Code:Gold
Drills, End Mills, Pins, and Reamers.
0.287 lb/in3 (7944 kg/m3)
Modulus Of Elasticity
30 x 106 psi (207 GPa)
45-50% of a 1% carbon steel