¼öªî¶ê¿û40CrNiMo¡¸¡¹¦Xª÷¶ê¿û30CrMnTi
¦Xª÷µ²ºc¿ûªO40Cr¡¸¡¹¦Xª÷µ²ºc¿û20Cr
¦Xª÷µ²ºc¿û34CrNiMo6¡¸¡¹¦Xª÷¿û¶ê´Î20CrMnMoH