M2 Steel

M2 Steel

Steel name: M2
Diagram No.: 2172
Mat.No. (Wr.Nr.) designation: 1.3343
AISI/SAE designation: M2
Chemical composition in weight %: 0.85-0.90% C, 0.25% Mn, 4.10% Cr, 5.00% Mo, 1.90% V, 6.40% W
Steel group: High speed tool steels
Properties: No data
Applications: Taps, twist drills, reamers, broaching tools, metal saws, milling tools of all types, wood working tools, cold work tools.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Hardening temperature of 1920 to 2245°F (1190 to 1230°C); quench in: oil, salt bath at 930 to 1020°F (500 to 550°C), or vacuum. The upper temperature range should be used for parts of simple geometry, the lower range for more complex tooling. For cold work tooling, lower temperatures are of importance for improved toughness.
Tempering: Slowly and uniformly heat to the appropriate tempering temperature immediately after the hardening operation. Once the temperature of the tool has been equalized, a soaking period of one hour per inch (25 mm) of workpiece thickness is required, but not less than 2 hours. First and second tempers should be used to reach the desired hardness level, and the third selected for additional stress relief at 85 - 120°F (30 to 50°C) below the highest tempering temperature. Intermittent cooling, in air, between tempers is required for a minimum of 1 hour. Obtainable hardness of 64 to 66 HRC.
Diagram note: Hardening temperature: 2225°F (1220°C) Specimen size: square cross section 20 mm.

Tempering Diagram

Price: 20.00 US $
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