Constantan Strip Copper Nickel Low Resistance Alloy Wire/Sheet/Coil CuNi44 /2.0842

• Product Type: Strip
• Material: CuNi
• Carbon Content: Low Carbon
• PCD: 420
• ET: 0
• Hole: 0
• Model NO.: CuNi44
• colour: silver white
• standard: GB/ASTM/JIS/BIS/DIN
• Sample: Small Order Accepted
• surface: Bright
• Density: 8.9(g/cm3)
• Transport Package: Waterproof Paper, Wooden Case
• Specification: RoHS, SGS, ISO 9001: 2008
• Trademark: TANKII
• Origin: China
• HS Code: 7408220000
• Production Capacity: 5000 Ton/Yearton/Year

Product Description

Constantan Strip Copper Nickel Low Resistance Alloy Wire/Sheet/Coil CuNi44 /2.0842


Chemical Content, %

Ni	Mn	Fe	Si	Cu	Other	ROHS Directive
						Cd	Pb	Hg	Cr
44	1%	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

 main specifications and main technical parameter of resistance alloy constantan wire

main property    type		NC003 Cuni1	NC005 CuNI2	NC010 CuNI6	NC012 CuNi8	NC015 CuNI10	NC025 CuNi19	NC030 CuNi23	NC035 CuNi30	NC040 CuNi34	NC050 CuNI44
main chemical composition	Ni	1	2	6	8	10	19	23	30	34	44
	MN	/	/	/	/	/	0.5	0.5	1.0	1.0	1.0
	CU	rest	rest	rest	rest	rest	rest	rest	rest	rest	rest
max working temperature		/	200	220	250	250	300	300	350	350	400
density g/cm3		8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9
resistivity at 20 °c		0.03 ±10%	0.05 ±10%	0.10 ±10%	0.12 ±10%	0.15 ±10%	0.25 ±5%	0.30 ±5%	0.35 ±5%	0.40 ±5%	0.49 ±5%
temperature coefficient of resistance		<100	<120	<60	<57	<50	<25	<16	<10	-0	<-6
tensile strength mpa		>210	>220	>250	>270	>290	>340	>350	>400	>400	>420
elongation		>25	>25	>25	>25	>25	>25	>25	>25	>25	>25
melting point °c		1085	1090	1095	1097	1100	1135	1150	1170	1180	1280
coefficient of conductivity		145	130	92	75	59	38	33	27	25	23

Application of Constantan
Constantan is a copper-nickel alloy that contains specific minor amounts of additional elements to achieve precise values for the temperature coefficient of resistivity. Careful control of melting and conversion practices results in a very low level of pinholes at ultra-thin thicknesses. The alloy is used extensively for foil resistors and strain gauges.