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Here's a comprehensive list of resistivities, provided with permission from Eddy Current Technology Incorporated (thanks!). Also, thanks to Günter for pointing it out!
If you need to know more about any specific material in this table, click on the material name. Our reference for this info mainly is the boulder.nist.gov web site. Please be sure to find a second reference on this data (preferably your material vendor) before you base a design on this data!
A variety of metals and alloys are used for conductors and resistors on printed circuit boards and thin-film networks. Thick film conductors are formed from pastes, and will be treated separately by Microwaves101 at a later date.
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| Material |
Formula |
Temperature coefficient
of resistivity (TCR)
(ppm/°C)
|
Bulk resistivity
at 25C
(μΩ-cm) |
Bulk resistivity
at 25C
(Ω-m) |
Bulk conductivity
S/m |
Melting point
°C |
Melting point
°F |
| Aluminum |
Al |
4200 |
2.65 |
2.65E-8 |
3.77E7 |
660 |
1221 |
| Carbon |
C |
-500 |
3000 |
3E-5 |
3.33E4 |
|
|
| Chromium |
Cr |
5900 |
18 |
1.8E-7 |
5.56E6 |
1857 |
3374.6 |
| Copper |
Cu |
4300 |
1.673 |
1.673E-8 |
5.98E7 |
1083 |
1981.4 |
| Gold |
Au |
4000 |
2.44 |
2.44E-8 |
4.10E7 |
1064 |
1947.2 |
| Indium |
In |
5200 |
15.52 |
1.552E-7 |
6.44E6 |
156.7 |
314 |
| Iridium |
Ir |
|
5.3 |
5.3E-8 |
2.13E7 |
2410 |
4370 |
| Iron |
Fe |
6500 |
9.66 |
9.66E-8 |
1.04E7 |
1535 |
2795 |
| Lead |
Pb |
4200 |
20.65 |
2.065E-7 |
4.84E6 |
328 |
622.4 |
| Magnesium |
Mg |
|
4.2 |
4.2E-8 |
2.38E7 |
|
|
| Nickel |
Ni |
6800 |
8.707 |
8.707E-8 |
1.14E7 |
1453 |
2647.4 |
| Nichrome |
Ni80/Cr20 |
0 to 50 |
110 |
1.1E-6 |
9.09E5 |
|
|
| Palladium |
Pd |
4200 |
10.5 |
1.05E-7 |
9.42E6 |
1552 |
2825.6 |
| Platinum |
Pt |
3000 |
10.6 |
1.06E-7 |
9.42E6 |
1768 |
3215 |
| Rhodium |
Rh |
|
4.51 |
4.51E-8 |
2.22E7 |
1966 |
3570.8 |
| Silver |
Ag |
4100 |
1.59 |
1.59E-8 |
6.29E7 |
962 |
1763.6 |
| Tantalum |
Ta |
|
15.52 |
1.552E-7 |
6.44E6 |
2996 |
5424.8 |
| Tantalum nitride |
TaN |
-100 |
252 |
2.52E-6 |
3.97E5 |
|
|
| Tin (white) |
Sn |
4600 |
11.55 |
1.155E-7 |
8.66E6 |
232 |
449.6 |
| Titanium |
Ti |
|
55 |
5.5E-7 |
1.82E6 |
1660 |
3020 |
| Tungsten |
W |
4800 |
5.6 |
5.6E-8 |
1.79E7 |
3422 |
6192 |
| Zinc |
Zn |
4200 |
5.68 |
5.68E-8 |
1.76E7 |
420 |
788 |
| Zirconium |
Zr |
|
4.1 |
4.1E-8 |
2.44E7 |
1852 |
3365.6 |