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.
| Cu | 99.2 to 99.596 | |
| Te | 0.4 to 0.7 | |
| 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