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Copper Nickel Alloys

Copper Nickel alloys are available in both round and flat forms and are primarily used for resistance wire applications.

Composition CuNi1 CuNi2 CuNi6 CuNi10 CuNi15 CuNi25 CuNi44
(Constantan)
Copper 99% 98% 94% 90% 85% 75% 66%
Nickel 1% 2% 6% 10% 15% 25% 44%
 
Properties CuNi1 CuNi2 CuNi6 CuNi10 CuNi15 CuNi25 CuNi44
(Constantan)
Resistivity
at 20oC		 0.0256 Ω x mm2 /m 0.0435 Ω x mm2 /m 0.0926 Ω x mm2 /m 0.1429 Ω x mm2 /m 0.21 Ω x mm2 /m 0.34 Ω x mm2 /m 0.49 Ω x mm2 /m
Temperature
coeff. of
resistance		 0.003 /
1oC > 20oC		 0.0013 /
1oC > 20oC		 0.0007 /
1oC > 20oC		 0.00063 /
1oC > 20oC		 0.00035 /
1oC > 20oC		 0.0002 /
1oC > 20oC		 0.00004 /
1oC > 20oC
Density 8.9 kg/m3 8.9 kg/m3 8.9 kg/m3 8.9 kg/m3 8.9 kg/m3 8.9 kg/m3 8.9 kg/m3
Tensile Strength in soft condition 230 – 330 N/mm2 240 – 340 N/mm2 250 – 350 N/mm2 300 – 400 N/mm2 320 – 420 N/mm2 350 – 450 N/mm2 400 – 500 N/mm2
Elongation at
soft temper		 >25% >25% >25% >25% >25% >25% >25%

Go to size range and shapes in Profile Options for Copper Nickel Alloys

Read about Packaging Options for Copper Nickel Alloys