STEEL MATERIAL WITH HIGH THERMAL RESISTANCE FOR PRODUCING ENGINE PISTON UPPER PARTS

摘要

A steel material is useful for producing the upper part of engine pistons wi th high wear, corrosion and heat resistance. This steel has the following composition (in % by weight): 1.20 to 1.50 Mn; 0.50 to 0.80 Si ; 0.35 to 0.40 C; 0.10 to 0.50 Mn; 0.08 to 0.13 V; 0.010 to 0.065 S; 0.015 to 0.050 Al; .ltoreq. 0.035 P, the remainder being iron and production impurities.