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Extra-Hard (H06) C72200 Copper-Nickel

H06 C72200 copper-nickel is C72200 copper-nickel in the H06 (extra hard) temper. It has the second highest strength compared to the other variants of C72200 copper-nickel. The graph bars on the material properties cards below compare H06 C72200 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

130 GPa 19 x 106 psi

Poisson's Ratio

0.33

Rockwell B Hardness

85

Rockwell Superficial 30T Hardness

74

Shear Modulus

48 GPa 7.0 x 106 psi

Tensile Strength: Ultimate (UTS)

560 MPa 82 x 103 psi

Thermal Properties

Latent Heat of Fusion

220 J/g

Maximum Temperature: Mechanical

230 °C 450 °F

Melting Completion (Liquidus)

1180 °C 2150 °F

Melting Onset (Solidus)

1120 °C 2050 °F

Specific Heat Capacity

400 J/kg-K 0.095 BTU/lb-°F

Thermal Conductivity

34 W/m-K 20 BTU/h-ft-°F

Thermal Expansion

16 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

6.5 % IACS

Electrical Conductivity: Equal Weight (Specific)

6.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

36 % relative

Density

8.9 g/cm3 560 lb/ft3

Embodied Carbon

3.9 kg CO2/kg material

Embodied Energy

59 MJ/kg 25 x 103 BTU/lb

Embodied Water

300 L/kg 35 gal/lb

Common Calculations

Stiffness to Weight: Axial

8.0 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

17 points

Thermal Diffusivity

9.6 mm2/s

Thermal Shock Resistance

19 points

Alloy Composition

Copper (Cu)Cu 78.1 to 84.2
Nickel (Ni)Ni 15 to 18
Iron (Fe)Fe 0.5 to 1.0
Manganese (Mn)Mn 0 to 1.0
Chromium (Cr)Cr 0.3 to 0.7
Zinc (Zn)Zn 0 to 1.0
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

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