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China Manufacturer Constantan Alloy Wire Cuni40

Sep 01, 2016

Basic Info.

Model NO.:CuNi40Product Type:Wire
Material:Cuni40Carbon Content:Low Carbon
Package:Packed in Plywood BoxesSpecification:SGS. ISO9001
Application:Heating System and ResistorGrade:Cuni40
Chemical Composition:Cu Ni MnCertificate:RoHS, ISO9001, SGS
Shape:Wire, Ribbon, StripConductor Material:Copper
Dimension:0.1mm-10mmElongation:≥15 %
Ni%:39-41Cu (Min):57%
HS Code:75052200Production Capacity:100tons Per Month

Product Description

CuNi40(6J40)Constantan is CuNi40,also named 6J40,it is a resistance alloy which is mainly made up of copper and nickel.It has the low resistance temperature coefficient,wide working temperature scope(500 below),good machiningproperty,anti-corrosive and easy braze welding. The alloy is non-magnetic. It is used for electrical regenerator's variable resistor and the strain resistor,
potentiometers, heating wires, heating cables and mats. Ribbons are used for heating of bimetals. Another field of application is manufacturing of thermocouples because it develops a high electromotive force (EMF) in association with others metals. Copper nickel alloy series:Constantan CuNi40 (6J40), CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23,CuNi30, CuNi34, CuNi44. Size dimension range:Wire: 0.018-10mmRibbons: 0.05*0.2-2.0*6.0mm Strip: 0.05*5.0-5.0*250mm 

Chemical Composition:

NameCodeMain Composition (%)



Physical Properties: 

NameCodeDensity  (g/mm2) Max. Working Temp.(º C )


Mechanical Properties: 

NameTypeResistivity (μ Ω. M)   (20º C )Temp. Coff. of Resistance (α×10-6/°C)   (20º C )Thermal EMF vs. Copper  (μV/º C  )(0-100º C )Elongation (%)Tensile   Strength     (Mpa)

Constantan6J400.48 ±0.034045≥15≥390

Short delivery time.
Product Application:

7 and Chinese New Year holiday . For detail, please see our update holiday notice. During these period, if you have a demand, Please send me an email. Do you provide free samples?
Yes, we can provide a free sample for testing,buyer should bear all the shipping costs.
What is your payment terms?
T/T,L/C,D/A,D/P,Western Union,MoneyGram,Paypal We are doing the best to match your demand. What is the lead time?Usually sample lead time is 7 days after payment has been confirmed.Normal order is 10-30days,it depends on customers' quantity. Anyway,we try to offer good-quality products as soon as possible.