| 摘要 |
<p>A powder metal composition contains 1.0 to 2.5% Ni, 0.3 to 0.7% Mo, 0.15 to 0.30% Mn, 0.5 to 1.5% Cu, 0.3 to 0.7% C, 0.50 to 1.0% zinc stearate, the balance being Fe. Such a composition has surprisingly good physical properties particularly tensile strength and fracture toughness. </p> |
