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