Meaning
Molybdenum-bearing alloy tool steels retain high hardness and wear resistance at elevated working temperatures during high-speed machining and metal cutting operations. Formulated with balanced molybdenum, tungsten, and vanadium contents, high speed steel M2 serves as a durable material for precision punches, dies, and electrode foil slitting knives in manufacturing lines. The alloy loses utility in applications requiring extreme corrosion resistance or operating environments continuously exceeding six hundred degrees Celsius.
Carbide Distribution
Finely dispersed vanadium and molybdenum carbides provide resistance to adhesive and abrasive wear. Proper heat treatment dissolves primary carbides while precipitating fine secondary carbides during tempering cycles. Balanced microstructure prevents premature fatigue cracking under cyclic mechanical loads.
Machining Performance
High toughness allows slitting tools to withstand edge chipping during rapid cutting of current collector foils. Tool edge sharpness dictates burr formation limits on copper and aluminum foil substrates. Grinding procedures require aluminum oxide or cubic boron nitride wheels to prevent thermal surface damage.
Quality Verification
Metallurgical inspection verifies grain size and carbide band distribution in raw bar stock prior to tool fabrication. Hardness testing must confirm values between sixty-three and sixty-five Rockwell C following heat treatment. Material certificates record chemical composition compliance according to international standard specifications.
