| 摘要 |
PURPOSE:To improve strength at high temp. and machinability by specifying the amounts of C, Si, Mn, Cr, Ni, V, S, Zr, Fe, W, and Mo. CONSTITUTION:The titled austenitic tool steel has a composition consisting of, by weight, 0.41-1.2% C, 0.1-2% Si, 9-14% Mn, 9-17% Cr, 1.5-3.5% Ni, 1.6-3.6% V, 0.03-0.3% S, <=0.2% Zr, and the balance Fe or further containing, besides the above, either of 0.8-7% W and 0.5-4% Mo or both of W and Mo so that their total content is 0.6-9.5%. The above tool steel shows superior properties particularly in use at high temp. and, moreover, it has excellent machinability.
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