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UNS C96300 Copper-Nickel

C96300 copper-nickel is a copper-nickel alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has a fairly high melting temperature and a moderately high base cost among cast copper-nickels.

The graph bars on the material properties cards below compare C96300 copper-nickel to: cast copper-nickels (top), all copper alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness


Elastic (Young's, Tensile) Modulus

130 GPa 19 x 106 psi

Elongation at Break

11 %

Poisson's Ratio


Shear Modulus

49 GPa 7.1 x 106 psi

Tensile Strength: Ultimate (UTS)

580 MPa 84 x 103 psi

Tensile Strength: Yield (Proof)

430 MPa 63 x 103 psi

Thermal Properties

Latent Heat of Fusion

230 J/g

Maximum Temperature: Mechanical

240 °C 460 °F

Melting Completion (Liquidus)

1200 °C 2190 °F

Melting Onset (Solidus)

1150 °C 2100 °F

Specific Heat Capacity

400 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

37 W/m-K 21 BTU/h-ft-°F

Thermal Expansion

16 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

6.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

6.1 % IACS

Otherwise Unclassified Properties

Base Metal Price

42 % relative


8.9 g/cm3 550 lb/ft3

Embodied Carbon

5.1 kg CO2/kg material

Embodied Energy

76 MJ/kg 33 x 103 BTU/lb

Embodied Water

290 L/kg 34 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

59 MJ/m3

Resilience: Unit (Modulus of Resilience)

720 kJ/m3

Stiffness to Weight: Axial

8.2 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

17 points

Thermal Diffusivity

10 mm2/s

Thermal Shock Resistance

20 points

Alloy Composition

Among cast copper alloys, the composition of C96300 copper-nickel is notable for containing a comparatively high amount of nickel (Ni). Nickel is used to improve strength (particularly at elevated temperatures) and corrosion resistance. It also creates the need for additional care during casting.

Copper (Cu)Cu 72.3 to 80.8
Nickel (Ni)Ni 18 to 22
Niobium (Nb)Nb 0.5 to 1.5
Iron (Fe)Fe 0.5 to 1.5
Manganese (Mn)Mn 0.25 to 1.5
Silicon (Si)Si 0 to 0.5
Carbon (C)C 0 to 0.15
Phosphorus (P)P 0 to 0.020
Sulfur (S)S 0 to 0.020
Lead (Pb)Pb 0 to 0.010
Residualsres. 0 to 0.5

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993