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UNS C14500 (CW118C) Tellurium Copper

C14500 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. CW118C is the EN numeric designation for this material. C14500 is the UNS number. Additionally, the EN chemical designation is CuTeP. And the British Standard (BS) designation is C109.

It can have a moderately low tensile strength and a moderately high ductility among wrought coppers.

The properties of C14500 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 C14500 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

12 to 50 %

Poisson's Ratio

0.34

Rockwell F Hardness

40

Shear Modulus

43 GPa 6.3 x 106 psi

Shear Strength

150 to 190 MPa 22 to 27 x 103 psi

Tensile Strength: Ultimate (UTS)

220 to 330 MPa 32 to 47 x 103 psi

Tensile Strength: Yield (Proof)

69 to 260 MPa 10 to 38 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

200 °C 390 °F

Melting Completion (Liquidus)

1080 °C 1970 °F

Melting Onset (Solidus)

1050 °C 1920 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

360 W/m-K 210 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

94 % IACS

Electrical Conductivity: Equal Weight (Specific)

95 % IACS

Otherwise Unclassified Properties

Base Metal Price

33 % relative

Density

8.9 g/cm3 560 lb/ft3

Embodied Carbon

2.6 kg CO2/kg material

Embodied Energy

42 MJ/kg 18 x 103 BTU/lb

Embodied Water

310 L/kg 37 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

36 to 85 MJ/m3

Resilience: Unit (Modulus of Resilience)

21 to 300 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

6.8 to 10 points

Strength to Weight: Bending

9.1 to 12 points

Thermal Diffusivity

100 mm2/s

Thermal Shock Resistance

8.0 to 12 points

Alloy Composition

Among wrought copper alloys, the composition of C14500 copper is notable for including tellurium (Te). Tellurium is used to improve machinability.

Copper (Cu) 99.2 to 99.596
Tellurium (Te) 0.4 to 0.7
Phosphorus (P) 0.0040 to 0.012

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

Followup Questions

Similar Alloys

Further Reading

ASTM B301: Standard Specification for Free-Cutting Copper Rod, Bar, Wire, and Shapes

ASTM B124: Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes

ASTM B283: Standard Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)

Copper Alloys: Preparation, Properties and Applications, Michael Naboka and Jennifer Giordano (editors), 2013

Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993