Constantan / Eureka Electric Resistance Strip

Product Overview

Description

Constantan / Eureka Resistance Wire / Strip

CuNi resistance alloy 
World class standard 
Stable and uniform properties 
Solid bare copper conduct 

As a big manufacturer and exporter in China on the line of electric resistance alloy, we can supply all kinds of electric resistancealloy wire and strips (resistance steel wire and strips weiding wire)

 

copper nickel alloy includes : Constantan CuNi40 (6J40), CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23CuNi30, CuNi34, CuNi44.

 

1. constantan / Eureka 

Product Details: 
Grade: 6J40 also known as cuni40
Nature: With 40% nickel, 1.5% copper manganese alloy 

 

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 500°C). It has good properities on mechanical working, high resistance of corrosion. It is used for variable and strain resistance of corrosion. It is used for variable and strain resisitance elements in alternative instruments.

 

Our products have the following features: Stable performance, high resistivity, high working temperature, allowable high surface load, small specific gravity and reasonable price. 

 

2. constantan Strip / Tape / Wire / Foil /  Rod dimension available

 

Wire: 0.018-10mm Ribbons: 0.05*0.2-2.0*6.0mm 
Strip: 0.02*2.5-5.0*250mm 
Bars: OD 4-100mm 

 

3. Chemical composition and main properties of constantan 

 

 

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

 

 

	Type	(20º C ) Resistivity (μ Ω. M)	(20º C ) Temp. Coff.  of  Resistance (α×10-6/°C)	(0-100º C ) Thermal EMF vs. Copper  (μV/º C  )	Max.  Working  Temp.(º C )	Elongation (%)	Tensile  Strength (Mpa)
Constantan	6J40	0.48 ±0.03	+40	45	≤500	≥15	≥390

 

Alloy	Resistivity ( 20C μΩ.m)	Max.working Temperature ( 0C)	Tensile Strength (Mpa)	Melting point (0C)	Density ( g/cm3)	TCR x10-6/ 0C (20~600 0C)	EMF vs Cu (μV/ 0C) (0~100 0C)
NC003-CuNI1	0.03	200	210	1085	8.9	<100	-8
NC005-CuNi2	0.05	200	220	1090	8.9	<120	-12
NC010-CuNi6	0.1	220	250	1095	8.9	<60	-18
NC012-CUNi8	0.12	250	270	1097	8.9	<57	-22
NC015-CuNi10	0.15	250	290	1100	8.9	<50	-25
NC020-CuNi14	0.2	300	310	1115	8.9	<30	-28
Nc025-CuNi19	0.25	300	340	1135	8.9	<25	-32
NC030-CuNi23	0.3	300	350	1150	8.9	<16	-34
NC035-CuNi30	0.35	350	400	1170	8.9	<10	-37
NC040-CuNi34	0.4	350	400	1180	8.9	0	-39
NC050-CuNi44	0.49	400	420	1200	8.9	<-6	-43

 4. cuni resistance alloy application

CuNi alloy wires and strip/Tape typically used in heating cables, fuses, resistors and various types of controllers,

 electric car controller, the  instruments and meters, the integrated circuit, the sample electric current, the resistor. 

And low pressure resistance and so on