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Super-Spring (H14) C72500 Copper-Nickel

H14 C72500 copper-nickel is C72500 copper-nickel in the H14 (super spring) temper. It has the highest strength compared to the other variants of C72500 copper-nickel. The graph bars on the material properties cards below compare H14 C72500 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

Rockwell B Hardness

100

Rockwell Superficial 30T Hardness

89

Shear Modulus

45 GPa 6.6 x 106 psi

Tensile Strength: Ultimate (UTS)

780 MPa 110 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

210 °C 410 °F

Melting Completion (Liquidus)

1130 °C 2060 °F

Melting Onset (Solidus)

1060 °C 1940 °F

Specific Heat Capacity

390 J/kg-K 0.093 BTU/lb-°F

Thermal Conductivity

54 W/m-K 31 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

11 % IACS

Electrical Conductivity: Equal Weight (Specific)

11 % IACS

Otherwise Unclassified Properties

Base Metal Price

35 % relative

Density

8.9 g/cm3 560 lb/ft3

Embodied Carbon

3.6 kg CO2/kg material

Embodied Energy

55 MJ/kg 24 x 103 BTU/lb

Embodied Water

320 L/kg 38 gal/lb

Common Calculations

Stiffness to Weight: Axial

7.6 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

24 points

Strength to Weight: Bending

21 points

Thermal Diffusivity

16 mm2/s

Thermal Shock Resistance

27 points

Alloy Composition

Copper (Cu)Cu 85.2 to 89.7
Nickel (Ni)Ni 8.5 to 10.5
Tin (Sn)Sn 1.8 to 2.8
Iron (Fe)Fe 0 to 0.6
Zinc (Zn)Zn 0 to 0.5
Manganese (Mn)Mn 0 to 0.2
Lead (Pb)Pb 0 to 0.050
Residualsres. 0 to 0.2

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

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