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As Hot Rolled (M20) C77000 Nickel Silver

M20 C77000 nickel silver is C77000 nickel silver in the M20 (as hot rolled) condition. It has the second lowest strength compared to the other variants of C77000 nickel silver. The graph bars on the material properties cards below compare M20 C77000 nickel silver 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 17 x 106 psi

Poisson's Ratio

0.31

Shear Modulus

46 GPa 6.7 x 106 psi

Tensile Strength: Ultimate (UTS)

480 MPa 70 x 103 psi

Thermal Properties

Latent Heat of Fusion

200 J/g

Maximum Temperature: Mechanical

180 °C 360 °F

Melting Completion (Liquidus)

1050 °C 1930 °F

Melting Onset (Solidus)

1000 °C 1840 °F

Specific Heat Capacity

400 J/kg-K 0.095 BTU/lb-°F

Thermal Conductivity

29 W/m-K 17 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

5.5 % IACS

Electrical Conductivity: Equal Weight (Specific)

6.0 % IACS

Otherwise Unclassified Properties

Base Metal Price

31 % relative

Density

8.3 g/cm3 520 lb/ft3

Embodied Carbon

4.1 kg CO2/kg material

Embodied Energy

63 MJ/kg 27 x 103 BTU/lb

Embodied Water

300 L/kg 36 gal/lb

Common Calculations

Stiffness to Weight: Axial

8.1 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

16 points

Strength to Weight: Bending

16 points

Thermal Diffusivity

8.8 mm2/s

Thermal Shock Resistance

17 points

Alloy Composition

Copper (Cu)Cu 53.5 to 56.5
Zinc (Zn)Zn 22.7 to 30
Nickel (Ni)Ni 16.5 to 19.5
Manganese (Mn)Mn 0 to 0.5
Iron (Fe)Fe 0 to 0.25
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 B122: Standard Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled Bar

Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001

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