Resistivities and Temperature Coefficients

Resistivities and Temperature Coefficients
Material                                               Resistivity in ohm-meter            Temperature coefficient at 20ºC (´ 10-8)                                                    20ºC (´ 10-4)
Aluminum, commercial	2.8	40.3
Brass	6 – 8	20
Carbon	3000 – 7000	-5
Constantan or Eureka	49	+0.1	to	-0.4
Copper (annealed)	1.72	39.3
German Silver	20.2	2.7
(84% Cu; 12% Ni; 4% Zn)
Gold	2.44	36.5
Iron	9.8	65
Manganin	44 – 48	0.15
(84% Cu ; 12% Mn ; 4% Ni)
Mercury	95.8	8.9
Nichrome	108.5	1.5
(60% Cu ; 25% Fe ; 15% Cr)
Nickel	7.8	54
Platinum	9 – 15.5	36.7
Silver	1.64	38
Tungsten	5.5	47
Amber	5 ´ 1014
Bakelite	1010
Glass	1010 – 1012
Mica	1015
Rubber	1016
Shellac	1014
Sulphur	1015