A.1%~5% B.6%~10% C.11%~14% D.15%~20%
A.小型冷作模具 B.大型冷作模具 C.熱擠壓模 D.熱鍛模
A.W18Cr4V B.1Cr18Ni9Ti C.Cr12MoV D.3Cr13