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Annealed (O61) C70400 Copper-Nickel

O61 C70400 copper-nickel is C70400 copper-nickel in the O61 (annealed) temper. The graph bars on the material properties cards below compare O61 C70400 copper-nickel to: wrought 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

Elastic (Young's, Tensile) Modulus

120 GPa 18 x 106 psi

Poisson's Ratio

0.34

Shear Modulus

45 GPa 6.6 x 106 psi

Tensile Strength: Ultimate (UTS)

300 MPa 43 x 103 psi

Tensile Strength: Yield (Proof)

95 MPa 14 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

210 °C 410 °F

Melting Completion (Liquidus)

1120 °C 2050 °F

Melting Onset (Solidus)

1060 °C 1950 °F

Specific Heat Capacity

390 J/kg-K 0.093 BTU/lb-°F

Thermal Conductivity

64 W/m-K 37 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

14 % IACS

Electrical Conductivity: Equal Weight (Specific)

14 % IACS

Otherwise Unclassified Properties

Base Metal Price

32 % relative

Density

8.9 g/cm3 560 lb/ft3

Embodied Carbon

3.0 kg CO2/kg material

Embodied Energy

47 MJ/kg 20 x 103 BTU/lb

Embodied Water

300 L/kg 36 gal/lb

Common Calculations

Resilience: Unit (Modulus of Resilience)

38 kJ/m3

Stiffness to Weight: Axial

7.5 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

9.3 points

Strength to Weight: Bending

11 points

Thermal Diffusivity

18 mm2/s

Thermal Shock Resistance

10 points

Alloy Composition

Copper (Cu)Cu 89.8 to 93.6
Nickel (Ni)Ni 4.8 to 6.2
Iron (Fe)Fe 1.3 to 1.7
Manganese (Mn)Mn 0.3 to 0.8
Zinc (Zn)Zn 0 to 1.0
Lead (Pb)Pb 0 to 0.050
Residualsres. 0 to 0.5

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

Followup Questions

Further Reading

ASTM B111: Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001