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Spring-Tempered (H08) C72800 Copper-Nickel

H08 C72800 copper-nickel is C72800 copper-nickel in the H08 (spring) temper. It has the lowest ductility compared to the other variants of C72800 copper-nickel. The graph bars on the material properties cards below compare H08 C72800 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 17 x 106 psi

Elongation at Break

3.9 %

Poisson's Ratio

0.34

Rockwell C Hardness

30

Shear Modulus

44 GPa 6.4 x 106 psi

Shear Strength

550 MPa 80 x 103 psi

Tensile Strength: Ultimate (UTS)

960 MPa 140 x 103 psi

Tensile Strength: Yield (Proof)

910 MPa 130 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

200 °C 390 °F

Melting Completion (Liquidus)

1080 °C 1980 °F

Melting Onset (Solidus)

920 °C 1680 °F

Specific Heat Capacity

380 J/kg-K 0.091 BTU/lb-°F

Thermal Conductivity

55 W/m-K 32 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

38 % relative

Density

8.8 g/cm3 550 lb/ft3

Embodied Carbon

4.4 kg CO2/kg material

Embodied Energy

68 MJ/kg 29 x 103 BTU/lb

Embodied Water

360 L/kg 44 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

37 MJ/m3

Resilience: Unit (Modulus of Resilience)

3530 kJ/m3

Stiffness to Weight: Axial

7.4 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

30 points

Strength to Weight: Bending

25 points

Thermal Diffusivity

17 mm2/s

Thermal Shock Resistance

34 points

Alloy Composition

Copper (Cu)Cu 78.3 to 82.8
Nickel (Ni)Ni 9.5 to 10.5
Tin (Sn)Sn 7.5 to 8.5
Zinc (Zn)Zn 0 to 1.0
Iron (Fe)Fe 0 to 0.5
Niobium (Nb)Nb 0.1 to 0.3
Manganese (Mn)Mn 0.050 to 0.3
Magnesium (Mg)Mg 0.0050 to 0.15
Aluminum (Al)Al 0 to 0.1
Silicon (Si)Si 0 to 0.050
Antimony (Sb)Sb 0 to 0.020
Titanium (Ti)Ti 0 to 0.010
Lead (Pb)Pb 0 to 0.0050
Phosphorus (P)P 0 to 0.0050
Sulfur (S)S 0 to 0.0025
Bismuth (Bi)Bi 0 to 0.0010
Boron (B)B 0 to 0.0010
Residualsres. 0 to 0.3

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

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