Constantan wire, Eureka, 50g reel

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Grouped product items
Product Name	Qty
Constantan wire (Eureka) 18 SWG - 50g reel ~4.7m $18.80 $20.68
Constantan wire (Eureka) 20 SWG - 50g reel ~8.5m $19.80 $21.78
Constantan wire (Eureka) 22 SWG - 50g reel ~14.1m $21.50 $23.65
Constantan wire (Eureka) 24 SWG - 50g reel ~22.7m $23.50 $25.85
Constantan wire (Eureka) 26 SWG - 50g reel ~34m $25.60 $28.16
Constantan wire (Eureka) 28 SWG - 50g reel ~50m $29.60 $32.56
Constantan wire (Eureka) 30 SWG - 50g reel ~71m $34.50 $37.95
Constantan wire (Eureka) 32 SWG - 50g reel ~94m $38.70 $42.57

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Details

'Constantan' resistance wire, Eureka, 50g reel.

56% copper and 44% nickel.

Diameter mm	SWG	Ohms / metre	Approx metres on 50g reel

1.22	18	0.42	4.7m

0.91	20	0.747	8.5m

0.71	22	1.234	14.1m

0.56	24	1.997	22.7m

0.46	26	2.987	34.0m

0.38	28	4.413	50m

0.32	30	6.288	71m

0.27	32	8.31	94m

Resistance wire is made from alloys of different metals to deliberately create a high resistance wire. Sometimes the resistance wire is used for heating purposes (heating elements, electric kettles, and similar) but other times it is very important that the resistance does not alter as the wire heats.