Temperature coefficients of copper
| Temperature ° C | Multiplier Constant | Reciprocal of the Constant | Temperature ° C | Multiplier Constant |
| 5 | 1,0626 | 0,9411 | 15 | 1,02 |
| 5,5 | 1,0604 | 0,943 | 15,5 | 1,018 |
| 6 | 1,0582 | 0,945 | 16 | 1,016 |
| 6,5 | 1,056 | 0,9469 | 16,5 | 1,0139 |
| 7 | 1,0538 | 0,9489 | 17 | 1,0119 |
| 7,5 | 1,0517 | 0,9509 | 17,5 | 1,0099 |
| 8 | 1,0495 | 0,9528 | 18 | 1,0079 |
| 8,5 | 1,0473 | 0,9548 | 18,5 | 1,0059 |
| 9 | 1,0452 | 0,9568 | 19 | 1,0039 |
| 9,5 | 1,043 | 0,9587 | 19,5 | 1,002 |
| 10 | 1,0409 | 0,9607 | 20 | 1 |
| 10,5 | 1,0388 | 0,9627 | 20,5 | 0,998 |
| 11 | 1,0367 | 0,9646 | 21 | 0,9961 |
| 11,5 | 1,0346 | 0,9666 | 21,5 | 0,9941 |
| 12 | 1,0325 | 0,9686 | 22 | 0,9922 |
| 12,5 | 1,0304 | 0,9705 | 22,5 | 0,9903 |
| 13 | 1,0283 | 0,9725 | 23 | 0,9883 |
| 13,5 | 1,0262 | 0,9745 | 23,5 | 0,9864 |
| 14 | 1,0241 | 0,9764 | 24 | 0,9845 |
| 14,5 | 1,0221 | 0,9784 | 24,5 | 0,9826 |
| Reciprocal of the Constant | Temperature ° C | Multiplier Constant | Reciprocal of the Contrast |
| 0,9804 | 25 | 0,9807 | 1,0197 |
| 0,9823 | 25,5 | 0,9788 | 1,0216 |
| 0,9843 | 26 | 0,977 | 1,0236 |
| 0,9862 | 26,5 | 0,9751 | 1,0255 |
| 0,9882 | 27 | 0,9732 | 1,0275 |
| 0,9902 | 27,5 | 0,9714 | 1,0295 |
| 0,9921 | 28 | 0,9695 | 1,0314 |
| 0,9941 | 28,5 | 0,9677 | 1,0334 |
| 0,9961 | 29 | 0,9658 | 1,0354 |
| 0,998 | 29,5 | 0,964 | 1,0373 |
| 1 | 30 | 0,9622 | 1,0393 |
| 1,002 | 35 | 0,9443 | 1,0589 |
| 1,0039 | 40 | 0,9271 | 1,0786 |
| 1,0059 | 45 | 0,9105 | 1,0982 |
| 1,0079 | 50 | 0,8945 | 1,1179 |
| 1,0098 | 55 | 0,8791 | 1,1375 |
| 1,0118 | 60 | 0,8642 | 1,1572 |
| 1,0138 | 65 | 0,8498 | 1,1768 |
| 1,0157 | 70 | 0,8358 | 1,1965 |
| 1,0177 |
Note: The temperature coefficient of copper resistance varies slightly from sample to sample according to its exact conductivity.
The values given in the table are based on a resistance temperature coefficient value of 0.393 per °C at 20 °C, the value adopted by the International Electrotechnical Commission for "annealed standard copper".
Temperature coefficients of copper
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