21CrMoV5-7
代号：1.7709
高温机构钢
2化学成分
C: 0.17-0.25
Si: ≤0.4
Mn：0.4-0.8
S: ≤0.03
P: ≤0.025
Cr: 1.2-1.5
Mo: 0.55-0.8
Ni: ≤0.6
内燃机高温用钢 21CrMoV5-7 40CrMo5-6 40CrMoV4-6 X12Cr13 X20CrMoNiNbV11-1 X12CrNiMoV12-3 X21CrMoNiV12-2 X12CrMoV12-6 X12CrMo12-6 X11CrNiWT K6NiCrTiMoVB
无缝钢管 X2CrNi18-10 X5CrNi18-9 X7CrNi18-9 X6CrNiNb18-11 X7CrNiNb18-11 X6CrNiTi18-10 X7CrNiTi18-10 X2CrNiMo17-12 X2CrNiMo17-13 X5CrNiMo17-12 X7CrNiMo17-12 X7CrNiMoB17-12 X6CrNiMoTi17-12 X6CrNiMoNb17-12 X5CrNiMo17-13 X2CrNiN18-10 X2CrNiMoN17-13
V: 0.2-0.35
Al: ≤0.03
