Constantan/CuNi40 Wire for Resistor

• Product Type: Wire
• Material: CuNi Alloy Wire
• Carbon Content: None
• PCD: None
• ET: None
• Hole: None
• Model NO.: CuNi40
• Serves: Small Oreder Accepted
• Sample Free: Available
• Transport Package: Coil Cartons, Pallet, Spools, Coils
• Specification: ROHS, SGS
• Trademark: TANKII
• Origin: China
• HS Code: 7505220000
• Production Capacity: 2000 Tons/Year

Product Description

Constantan/CuNi40 Wire for Resistor

Product Description
Constantan Wire with moderate resistivity and low temperature coefficent of resistance with a flat resistance/temperature curve over a wider range than the "manganins". Constantan also shows better corrosion resistance than the man ganins. Uses tend to be restricted to ac circuits.
Constantan wire is also the negative element of the type J thermocouple with Iron being the positive; type J thermocouples are used in heat treating applications. Also, it is the negative element of the type T thermocouple with OFHC Copper the positive; type T thermocouples are used at cryogenic temperatures.
 
Chemical Content, %

Ni	Mn	Fe	Si	Cu	Other	ROHS Directive
						Cd	Pb	Hg	Cr
44	1.50%	0.5	-	Bal	-	ND	ND	ND	ND

Mechanical Properties

Max Continuous Service Temp	400ºC
Resisivity at 20ºC	0.49±5%ohm mm2/m
Density	8.9 g/cm3
Thermal Conductivity	-6(Max)
Melting Point	1280ºC
Tensile Strength,N/mm2   Annealed,Soft	340~535 Mpa
Tensile Strength,N/mm3   Cold Rolled	680~1070 Mpa
Elongation(anneal)	25%(Min)
Elongation(cold rolled)	≥Min)2%(Min)
EMF vs Cu, μV/ºC (0~100ºC)	-43
Micrographic Structure	austenite
Magnetic Property	Non

Our Services
a) We can provide high quality material, excellent design, precise manufacturing,complete specifications, considerate and integrity serivices.
b)  We can provide all kinds of electric heating alloy material and elements, including customized products.
c)  We can provide a complete solution for you.
d)  OEM service can be provided.
e)  Product selection
f)  Process optimization
g)  New product development

FAQ
Q: Concerning the supply ability of factory? 
A: About 10 tons of wire or strip per month.

Q: Technical supports?
A: We have our own development team for new project and professional technicial team.

Q: How do you ensure quality? 
A: We have QC who are reponsible for tracking and monitoring for whole production process. 
Accept customers' testing.

Q: What kind of logistics system do you have? 
A: We cooperate with large shipping company, for instance, CO,SCO, MSK, MSC, APL (U.S.) with
perfect distribution center to make sure the goods into customers in time.
 
Resistance Alloy- Constantan Strip Sizes / Temper Capabilities
 Condition: Bright, Annealed, Soft 
 Wire diameter 0.02mm-1.0mm packing in spool, big than 1.0mm packing in coil
 Rod, Bar diameter 1mm-30mm 
 Strip: Thickness 0.008mm-7mm, Width 1mm-280mm