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TM08 Mill Hardened C72900 Copper-Nickel

TM08 C72900 copper-nickel is C72900 copper-nickel in the TM08 (mill hardened to maximum) temper. It has the lowest ductility compared to the other variants of C72900 copper-nickel. The graph bars on the material properties cards below compare TM08 C72900 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

Elongation at Break

6.0 %

Poisson's Ratio

0.34

Shear Modulus

45 GPa 6.6 x 106 psi

Shear Strength

550 MPa 80 x 103 psi

Tensile Strength: Ultimate (UTS)

940 MPa 140 x 103 psi

Tensile Strength: Yield (Proof)

840 MPa 120 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

210 °C 400 °F

Melting Completion (Liquidus)

1120 °C 2040 °F

Melting Onset (Solidus)

950 °C 1740 °F

Specific Heat Capacity

380 J/kg-K 0.091 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

7.8 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.0 % IACS

Otherwise Unclassified Properties

Base Metal Price

39 % relative

Density

8.8 g/cm3 550 lb/ft3

Embodied Carbon

4.6 kg CO2/kg material

Embodied Energy

72 MJ/kg 31 x 103 BTU/lb

Embodied Water

360 L/kg 43 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

55 MJ/m3

Resilience: Unit (Modulus of Resilience)

2940 kJ/m3

Stiffness to Weight: Axial

7.6 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

30 points

Strength to Weight: Bending

24 points

Thermal Diffusivity

8.6 mm2/s

Thermal Shock Resistance

33 points

Alloy Composition

Copper (Cu) 74.1 to 78
Nickel (Ni) 14.5 to 15.5
Tin (Sn) 7.5 to 8.5
Iron (Fe) 0 to 0.5
Zinc (Zn) 0 to 0.5
Manganese (Mn) 0 to 0.3
Magnesium (Mg) 0 to 0.15
Niobium (Nb) 0 to 0.1
Lead (Pb) 0 to 0.020
Residuals 0 to 0.3

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

Followup Questions