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As Hot Rolled (M20) C70620 Copper-Nickel

M20 C70620 copper-nickel is C70620 copper-nickel in the M20 (as hot rolled) condition. It has the second lowest strength compared to the other variants of C70620 copper-nickel. The graph bars on the material properties cards below compare M20 C70620 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

46 GPa 6.7 x 106 psi

Tensile Strength: Ultimate (UTS)

350 MPa 51 x 103 psi

Thermal Properties

Latent Heat of Fusion

220 J/g

Maximum Temperature: Mechanical

220 °C 430 °F

Melting Completion (Liquidus)

1120 °C 2050 °F

Melting Onset (Solidus)

1060 °C 1950 °F

Specific Heat Capacity

390 J/kg-K 0.094 BTU/lb-°F

Thermal Conductivity

49 W/m-K 28 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

33 % relative

Density

8.9 g/cm3 560 lb/ft3

Embodied Carbon

3.4 kg CO2/kg material

Embodied Energy

51 MJ/kg 22 x 103 BTU/lb

Embodied Water

300 L/kg 35 gal/lb

Common Calculations

Stiffness to Weight: Axial

7.7 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

11 points

Strength to Weight: Bending

12 points

Thermal Diffusivity

14 mm2/s

Thermal Shock Resistance

12 points

Alloy Composition

Copper (Cu)Cu 86.5 to 90
Nickel (Ni)Ni 9.0 to 11
Iron (Fe)Fe 1.0 to 1.8
Manganese (Mn)Mn 0 to 1.0
Zinc (Zn)Zn 0 to 0.5
Phosphorus (P)P 0 to 0.2
Carbon (C)C 0 to 0.050
Sulfur (S)S 0 to 0.020
Lead (Pb)Pb 0 to 0.020
Residualsres. 0 to 0.5

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

Followup Questions

How are the material properties defined?How do I compare this exact variant to another material?

Further Reading

ASTM B122: Standard Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled Bar

ASTM B124: Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes

ASTM B283: Standard Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015