16Mn和16MnD化学成分的区别 - : 16Mn锻件的化学成分 C :0.13~0.19 Si :0.20~0.60 Mn :1.20~1.60 Mo:— Cr≤0.30 V:— Nb:— P≤0.030 S≤0.020 Ni≤0.30 Cu≤0.25 16MnD化学成分(%) C 0.12~0.20 Si 0.20~0.60 Mn 1.20~1.60 Als ≥0.015 Cr ≤0.25 S ≤0.025 P ≤0.025 Ni ≤0.30 Cu ≤0.25