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Opus in profectus

Electrical resistivity

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Resistivity of selected materials (~300 K)
(Note the difference in units between metals and nonmetals.)
metals ρ (nΩ m) nonmetals ρ (Ω m)
aluminum 26.5 aluminum oxide (14 ℃) 1 × 1014
brass 64 aluminum oxide (300 ℃) 3 × 1011
chromium 126 aluminum oxide (800 ℃) 4 × 106
copper 17.1 carbon, amorphous 0.35
gold 22.1 carbon, diamond 2.7
iron 96.1 carbon, graphite 650 × 10−9
lead 208 germanium 0.46
lithium 92.8 pyrex 7740 40,000
mercury (0 ℃) 941 quartz 75 × 1016
manganese 1440 silicon 640
nichrome 1500 silicon dioxide (20 ℃) 1 × 1013
nickel 69.3 silicon dioxide (600 ℃) 70,000
palladium 105.4 silicon dioxide (1300 ℃) 0.004
platinum 105 water, liquid (0 ℃) 861,900
plutonium 1414 water, liquid (25 ℃) 181,800
silver 15.9 water, liquid (100 ℃) 12,740
solder 150    
steel, plain 180    
steel, stainless 720    
tantalum 131    
tin (0 ℃) 115    
titanium (0 ℃) 390    
tungsten 52.8    
uranium (0 ℃) 280    
zinc 59