| 摘要 |
An alloy steel composition is disclosed which has characteristics of (a) enhanced resistance to hardness degradation under high temperatures and/or enhanced resistance to sliding wear and contact fatigue under conditions of poor lubrication, (b) ease of softening for formability and machinability, and (c) ease of heat treating for hardening with austenitizing (or carburizing) at a temperature of 950 DEG -960 DEG C. and tempering at a temperature at or below 600 DEG C. The composition comprises essentially, by weight, carbon-0.15-0.30%, Mo-2.0-3.5%, V-0-0.45%, Cr-0-0.75%, Mn-0.25-0.50%, Si-0.15-0.35%, and remainder Fe.
|
