Constantan is a proprietary name for a copper–nickel alloy also known as Eureka, Advance and Ferry. It usually consists of 55% copper and 45% nickel. Its main feature is the low thermal variation of its resistivity, which is constant over a wide range of temperatures.
 
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Constantan Wire ,100g/reel, SWG 16
Constantan Wire ,100g/reel, SWG 20
Constantan Wire ,100g/reel, SWG 22
Constantan Wire ,100g/reel, SWG 24
Constantan Wire ,100g/reel, SWG 26
Constantan Wire ,100g/reel, SWG 28
Constantan Wire ,100g/reel, SWG 30
Constantan Wire ,100g/reel, SWG 32
Constantan Wire ,100g/reel, SWG 34
Constantan Wire ,100g/reel, SWG 36