A. (Cr)≥1.5%,(Ni)≥2.5%,(W)≥3.5% B. (Cr)≥1.5%,(Ni)≥3.5%,(W)<1.5% C. (Cr)≥1.5%,(Ni)≥3.5%,(W)≥2.5% D. (Cr)≥2.5%,(Ni)≥1.5%,(W)≥3.5%
A. ≥1.1 B. ≥1.2 C. ≥1.3 D. ≥1
A. 1.02 B. 1.04 C. 1
A. 6~4.5 B. 4.5~3 C. 1.5~3 D. 1.5~0