A. 强度 B. 塑性 C. 韧性 D. 硬度
A. RP0.2>300MPa B. RP0.2>450MPa C. RP0.2>600MPa D. RP0.2>1000MPa
A. RP0.2=580MPa,A=30% B. RP0.2=650MPa,A=20% C. RP0.2=800MPa,A=20% D. RP0.2=1800MPa,A=2%