Table - resistance of alloys chromel, alumel, kopel constantan
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Technical specifications
Alloy | Density (g / cm³,) | Melting temperature | Annealing temperature | Electrical resistance (Ohm • mm² / m;) | TKLR |
Aljumel | 8.48 | 1440 ° C | 950 ° C |
0.32 | 13.7 • 10−6 / ° C |
Chromel, | 8.7 | 1400−1500 ° C | 800−900 ° C |
0.68 | 12.8 • 10−6 / ° C |
Kopel | 8.9 | 1290 ° C | 800−850 ° C |
0.5 | 14 • 10−6 / ° C |
Constantan | 8.9 | 1260 ° C | 950 ° C |
0.4 | 14 • 10−6 1 / ° С |
Measuring ranges
- t ° 200 — 1000 ° C — alumel-chromel (TXA);
- t ° 200 — 800 ° C — copel-chromel (TCA);
- t ° from -40 to 900 ° C — constantan-chromel (TCA);
- t ° to 300 ° C — Cu-chromel;
- t ° from 0 to 760 ° C — Fe-copel;
- t ° in an inert medium up to 3000 ° C, tungsten-rhenium.
- measures very low cryogenic temperatures — iron-constantan;
Storage
In closed warehouses or under a canopy, where adequate protection against mechanical and other damages is provided.
Delivery, price
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