C |
Mn |
Si |
Cr |
Mo |
W |
V |
Ni |
P |
S |
0.55~0.64 |
≤0.04 |
≤0.04 |
3.80~4.40 |
2.8~3.3 |
0.9~1.3 |
0.9~1.3 |
1.8~2.2 |
≤0.03 |
≤0.03 |
6Cr4Mo3Ni2WV鋼的物理性能示于表3-14-2~表3-14-6,其密度為7.9t/m3。
表3-14-2 6Cr4Mo3Ni2WV鋼的臨界溫度
臨界點 |
Ac1 |
Ac3 |
Ar1 |
Ms |
溫度(近似值)/℃ |
737 |
822 |
650 |
180 |
表3-14-3 6Cr4Mo3Ni2WV鋼的質(zhì)量定壓熱容
溫度/℃ |
20 |
200 |
400 |
500 |
600 |
700 |
質(zhì)量定壓熱容CP/J·(㎏·K) |
572.6 |
585.2 |
652.0 |
710.6 |
794.2 |
948.8 |
表3-14-4 6Cr4Mo3Ni2WV鋼的線(膨)脹系數(shù)
溫度/℃ |
18~100 |
18~200 |
18~300 |
18~400 |
18~500 |
18~600 |
18~700 |
線(膨)脹系數(shù)/℃ |
11.1×10 |
11.2×10 |
11.9×10 |
12.5×10 |
12.3×10 |
13.1×10 |
13.3×10 |
表3-14-5 6Cr4Mo3Ni2WV鋼的熱導(dǎo)率
溫度/℃ |
20 |
200 |
400 |
500 |
600 |
700 |
導(dǎo)熱率λ/W·(m·K) |
34.3 |
33.4 |
32.6 |
32.2 |
31.8 |
31.4 |
表3-14-6 6Cr4Mo3Ni2WV鋼的彈性模量
溫度/℃ |
20 |
200 |
300 |
600 |
650 |
彈性模量E/MPa |
200000~218000 |
185000~200000 |
187000~195000 |
160000~168000 |
156000~161000 |