¤Æ¾Ç¦¨¤À¡]½è¶q¤À¼Æ¡^/¢HC 0.52-0.60Si 0.17-0.37Mn 0.65-0.95P 0.030S 0.030Cr 0.65-0.95Ni 0.35Cu 0.25V 0.10-0.20