Constantan Alloy Wire

• Product Type: Wire
• Material: CuNi
• Surface: Bright
• Sample: Available
• Transport Package: Carton or Wooden Case
• Trademark: REOU
• Model NO.: 6J40
• Origin: Jiangyin, China

Product Description

Constantan wire

Constantan wire has low resistance temperature coefficient, wide operating temperature range (below 500ºC), good machining performance, corrosion resistance and brazing.Variable resistance and strain resistance elements can be made in ac instruments.

Chemical composition

Name	Code	Main composition				Density
		Cu	Mn	Ni	Cr	g/mm²
conatantan	6J40	Bal.	1-2	39-41	_	8.9

Diamter and Tolerance
 

Diamter	0.02-0.028	0.032-0.10	0.112-0.28	0.315-0.50	0.56-1.0	1.06-1.60	1.70-2.12	2.24-3.00	3.15-4.50
Tolerance	±0.002	±0.003	±0.05	±0.010	±0.015	±0.020	±0.025	±0.030	±0.035

 

Properties
Name	Type	(20ºC) Resistivity (μΩ.m)	(20ºC) Temp. Coeff. Of Resistance (αX10-6/ºC	(0~100ºC) Thermal EMF vs. Copper (μv/ºC	Max.working Temp.(ºC)	Elongation (%)	Tensile Strength (N/mm2)
Constantan	6J40	0.48±0.03	≤±40	45	≤500	≥15	≥390

Production process

Packing&Delivery