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Thermal Expansion Table
| Temp Range, deg.° C |
Class 1 Kovar |
Class 2 Alloy 52 |
Class 3 Alloy 48 |
Class 4 Alloy 46 |
Class 5 Alloy 42 |
Class 6 Alloy 42-6 |
Class 7 Invar |
| 30 - 100 |
— |
10.5 |
9.4 |
8.2 |
4.8 |
— |
0.8-1.6 |
| 30 - 150 |
— |
10.5 |
9.4 |
8.1 |
4.6 |
— |
— |
| 30 - 200 |
5.5 |
10.4 |
9.4 |
7.9 |
4.5 |
— |
1.3-2.1 |
| 30 - 250 |
— |
10.4 |
9.3 |
7.8 |
4.5 |
— |
— |
| 30 - 300 |
5.1 |
10.2 |
8.8 |
7.5 |
4.0-4.7 |
8.2 |
4.92 |
| 30 - 325 |
— |
— |
— |
— |
4.7 |
— |
— |
| 30 - 350 |
— |
10.2 |
9.0 |
7.1-7.8 |
5.0 |
8.5-9.2 |
6.2-7.0 |
| 30 - 375 |
— |
— |
— |
7.5 |
5.5 |
— |
— |
| 30 - 400 |
4.6-5.2 |
10.1 |
8.2-9.2 |
7.5 |
6.0 |
10.0 |
7.82 |
| 30 - 425 |
— |
— |
8.9 |
7.6 |
— |
9.7-10.4 |
— |
| 30 - 450 |
5.1-5.5 |
9.6-10.1 |
9.0 |
7.9 |
6.7-7.4 |
10.6 |
8.5-9.2 |
| 30 - 475 |
— |
10.1 |
9.3 |
— |
— |
— |
— |
| 30 - 500 |
6.2 |
10.0 |
9.4 |
8.2-8.9 |
8.0 |
11.2 |
9.72 |
| 30 - 525 |
— |
10.4 |
— |
— |
— |
— |
— |
| 30 - 550 |
— |
10.2-10.7 |
9.6-10.3 |
9.3 |
8.8 |
11.7 |
— |
| 30 - 600 |
7.9 |
10.8 |
10.4 |
9.8 |
9.5 |
12.2 |
11.35 |
| 30 - 700 |
9.3 |
11.7 |
11.3 |
10.7 |
10.5 |
13.0 |
12.70 |
| 30 -800 |
10.4 |
12.5 |
12.1 |
11.6 |
11.4 |
13.7 |
13.45 |
| 30 -900 |
11.5 |
13.3 |
13.0 |
12.5 |
12.3 |
14.6 |
13.85 |
| 30 -1000 |
— |
14.2 |
13.9 |
13.4 |
13.2 |
15.4 |
— |
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