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3/4-Hard (H03) C78200 Nickel Silver

H03 C78200 nickel silver is C78200 nickel silver in the H03 (3/4 hard) temper. The graph bars on the material properties cards below compare H03 C78200 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

110 GPa 16 x 106 psi

Elongation at Break

5.0 %

Poisson's Ratio

0.32

Rockwell B Hardness

84

Rockwell Superficial 30T Hardness

72

Shear Modulus

43 GPa 6.2 x 106 psi

Shear Strength

350 MPa 51 x 103 psi

Tensile Strength: Ultimate (UTS)

540 MPa 78 x 103 psi

Tensile Strength: Yield (Proof)

470 MPa 68 x 103 psi

Thermal Properties

Latent Heat of Fusion

190 J/g

Maximum Temperature: Mechanical

160 °C 320 °F

Melting Completion (Liquidus)

1000 °C 1830 °F

Melting Onset (Solidus)

970 °C 1780 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

48 W/m-K 28 BTU/h-ft-°F

Thermal Expansion

19 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

11 % IACS

Electrical Conductivity: Equal Weight (Specific)

12 % IACS

Otherwise Unclassified Properties

Base Metal Price

28 % relative

Density

8.4 g/cm3 520 lb/ft3

Embodied Carbon

3.3 kg CO2/kg material

Embodied Energy

52 MJ/kg 22 x 103 BTU/lb

Embodied Water

310 L/kg 37 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

26 MJ/m3

Resilience: Unit (Modulus of Resilience)

990 kJ/m3

Stiffness to Weight: Axial

7.4 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

18 points

Thermal Diffusivity

15 mm2/s

Thermal Shock Resistance

18 points

Alloy Composition

Copper (Cu) 63 to 67
Zinc (Zn) 20.2 to 28.5
Nickel (Ni) 7.0 to 9.0
Lead (Pb) 1.5 to 2.5
Manganese (Mn) 0 to 0.5
Iron (Fe) 0 to 0.35
Residuals 0 to 0.5

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

Followup Questions

Further Reading

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

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