Constantan Type Resistance Alloy Wire

• Product Type: Wire
• Transport Package: Carton or Wooden Case
• Trademark: REOU
• Origin: Jiangyin, China

Product Description

Constantan-type

 

Constantan is a type of resistance alloy, which is made up of copper and nickel as the main components. It has a low temperature coefficient of resistance (TCR), and a wide operating temperature range (below 500ºC). It has good properties on mechanical working, high resistance of corrosion. It is used for variable and strain resistance elements in alternative instruments.

 

Chemical composition

Name                       Code                       Main Composition (%)                           Density     
                                                               Cu     Mn     Ni        Cr                             g/mm2
Constantan               6J40                      Bal. 1~2     39~41   __                              8.9

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

Diameter and Tolerance
 

Dia(mm)	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
Tolearance(mm)	±0.002	±0.003	±0.005	±0.010	±0.015	±0.020	±0.025	±0.030	±0.035

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