镍铬、镍铬铁系列牌号参数表
|
Type牌号
Performance性能
|
Cr20Ni80 |
Cr30Ni70 |
Cr15Ni60 |
Cr20Ni35 |
Cr20Ni30 |
Cr25Ni20 |
|
|
主要化学成分Main
|
Ni |
Rest |
Rest |
55.0-61.0 |
34.0-37.0 |
30.0-34.0 |
19.0-22.0 |
|
Cr |
20.0-23.0 |
28.0-31.0 |
15.0-18.0 |
18.0-21.0 |
18.0-21.0 |
24.0-26.0 |
|
|
Fe |
≤1.0 |
≤1.0 |
Rest |
Rest |
Rest |
Rest |
|
|
Max. continuous service temp. of element元件最高使用温度(oC) |
1200 |
1250 |
1150 |
1100 |
1100 |
1050 |
|
|
Resistivity at 20oC (μΩ·m)电阻率 |
1.09±0.05 |
1.18±0.05 |
1.12±0.05 |
1.0±0.05 |
1.04±0.05 |
0.95±0.05 |
|
|
Density (g/cm3)密度 |
8.40 |
8.10 |
8.20 |
7.90 |
7.90 |
7.15 |
|
|
Thermal conductivity |
60.3 |
45.2 |
45.2 |
43.8 |
43.8 |
43.8 |
|
|
Coefficient of lines expansion |
18.0 |
17.0 |
17.0 |
19.0 |
19.0 |
19.0 |
|
|
Melting point (approx.)( oC)熔点约值 |
1400 |
1380 |
1390 |
1390 |
1390 |
1400 |
|
|
Elongation at rupture (%)延伸率 |
>20 |
>20 |
>20 |
>20 |
>20 |
>20 |
|
|
Micrographic structure显微组织 |
austenite |
austenite |
austenite |
austenite |
austenite |
austenite |
|
|
Magnetic properties磁性 |
nonmagnetic |
nonmagnetic |
nonmagnetic |
Weak magnetic |
Weak magnetic |
Weak magnetic |
|
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