Heating Resistance Alloy Wire

• Product Type: Wire
• Material: Cu Ni
• Carbon Content: Low Carbon
• Diameter: 0.03 to 2mm
• Transport Package: Carton
• Specification: ISO9001
• Model NO.: chengxin -89663
• Trademark: Chengxin
• Origin: Wuxi
• HS Code: 85168000
• Production Capacity: 1000 Tons Per Year

Product Description

heating resistance alloy wire 




Constatnan Wire: Material: CuNi44 CuNi23, CuNi1, CuNi2, CuNi6, CuNi8, CuNi14, CuNi19, CuNi30, CuNi34, we supply!
Constantan Wire/CuNi44 Wire
 
Grade: 55.00 Copper, 44.00 Nickel, 1.0 Mn.
 
Electrical Resistivity: 0.49 ohm mm2/m

Shape: Wire, rod, bar

Diameter: 0.03mm-30mm

Those are alloys of chemical composition copper + nickel with addition of manganese with a low resistivity (from 231.5 to 23.6 Ohm. Mm2/ft). The most known, CuNi 44 (also called Constantan) presents the advantage of a very low temperature coefficient.

Electrical resistivity at room temperature	500 nΩ·m
Temperature coefficient at 20 C	8 ppm/K-1
Temperature coefficient -55 to 105 C	±40 ppm/K-1
Density	8.9 × 103 kg/m³
Melting point	1221 to 1300 °C
Specific heat capacity	0.39 J/(g·K)
Thermal conductivity at 23C	19.5 W/(m.K)
Linear coefficient of thermal expansion at 25-105C	14.9 × 10-6 K-1
Tensile strength	455-860 MPa
Elongation at fracture	<45%
Elastic modulus	162 GPa