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UNS C14300 Cadmium Copper

C14300 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products.

The properties of C14300 copper include five common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare C14300 copper to: wrought coppers (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

2.0 to 42 %

Poisson's Ratio


Shear Modulus

43 GPa 6.3 x 106 psi

Shear Strength

150 to 260 MPa 22 to 38 x 103 psi

Tensile Strength: Ultimate (UTS)

220 to 460 MPa 32 to 66 x 103 psi

Tensile Strength: Yield (Proof)

76 to 430 MPa 11 to 63 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

220 °C 420 °F

Melting Completion (Liquidus)

1080 °C 1980 °F

Melting Onset (Solidus)

1050 °C 1930 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

380 W/m-K 220 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

96 % IACS

Electrical Conductivity: Equal Weight (Specific)

96 % IACS

Otherwise Unclassified Properties

Base Metal Price

31 % relative


9.0 g/cm3 560 lb/ft3

Embodied Carbon

2.6 kg CO2/kg material

Embodied Energy

41 MJ/kg 18 x 103 BTU/lb

Embodied Water

310 L/kg 37 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

9.0 to 72 MJ/m3

Resilience: Unit (Modulus of Resilience)

25 to 810 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

6.8 to 14 points

Strength to Weight: Bending

9.1 to 15 points

Thermal Diffusivity

110 mm2/s

Thermal Shock Resistance

7.8 to 16 points

Alloy Composition

Among wrought copper alloys, the composition of C14300 copper is notable for including cadmium (Cd). Cadmium is used to improve strength at elevated temperatures.

Copper (Cu)Cu 99.9 to 99.95
Cadmium (Cd)Cd 0.050 to 0.15

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

Followup Questions

Similar Alloys

Further Reading

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