Constantan® Rod

Formula: Cu 55/Ni 45

Form: Rod

Material: Constantan®

Commodity: Alloys

Hazard Pictogram: GHS07, GHS08

Constantan® Rods are part of our extensive range of specialized alloy rods. They’re available in 52 variations, with different diameters and lengths to choose from. Constantan® rods showcase excellent spring properties, low electrical resistivity and corrosion resistance. They’re versatile and find applications in various industries, including the manufacturing of springs, thermocouples and electrical resistance wire. With their range of sizes and consistent performance, our Constantan® Rods cater to diverse needs across science and industry.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

Health hazard/Hazardous to the ozone layer

Serious health hazard

each

Tolerances

Rod

Diameter	=<10mm	±10%
Diameter	>10mm	±5%

Material Properties for Alloys

Mechanical Properties

Element	Value
Hardness - Brinell	100-300
Elongation at break( % )	45
Modulus of elasticity( GPa )	162
Izod impact strength( J m⁻¹ )	107
Tensile strength( MPa )	400-590

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	52
Temperature coefficient( K⁻¹ )	0.00002+/-

Thermal Properties

Element	Value
Maximum use temperature in air( C )	500
Melting point( C )	1225-1300
Thermal conductivity( W m⁻¹ K⁻¹ )	19.5@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	14.9@20-100°C