A.靜拉伸試驗B.靜載試驗C.疲勞試驗D.動載試驗
A.ω(Cr)≥1.5%,ω(Ni)≥2.5%,ω(W)≥3.5% B.ω(Cr)≥1.5%,ω(Ni)≥3.5%,ω(W)<1.5% C.ω(Cr)≥1.5%,ω(Ni)≥3.5%,ω(W)≥2.5% D.ω(Cr)≥2.5%,ω(Ni)≥1.5%,ω(W)≥3.5%
A.碳素結構鋼 B.優(yōu)質碳素結構鋼 C.合金結構鋼 D.低合金高強度鋼