MakeItFrom.com
Menu (ESC)

UNS C15000 (CW120C) Zirconium Copper

C15000 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. CW120C is the EN numeric designation for this material. C15000 is the UNS number. Additionally, the EN chemical designation is CuZr.

It can have the lowest tensile strength among wrought coppers. In addition, it can have a moderately high ductility and has a moderately low melting temperature.

The properties of C15000 copper include eight 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 C15000 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

13 to 54 %

Poisson's Ratio

0.34

Shear Modulus

43 GPa 6.3 x 106 psi

Shear Strength

150 to 280 MPa 21 to 40 x 103 psi

Tensile Strength: Ultimate (UTS)

200 to 460 MPa 29 to 67 x 103 psi

Tensile Strength: Yield (Proof)

45 to 460 MPa 6.5 to 67 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)

980 °C 1800 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

370 W/m-K 210 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

93 % IACS

Electrical Conductivity: Equal Weight (Specific)

93 % IACS

Otherwise Unclassified Properties

Base Metal Price

31 % relative

Density

9.0 g/cm3 560 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

43 MJ/kg 19 x 103 BTU/lb

Embodied Water

310 L/kg 37 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

19 to 250 MJ/m3

Resilience: Unit (Modulus of Resilience)

8.7 to 910 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

6.2 to 14 points

Strength to Weight: Bending

8.5 to 15 points

Thermal Diffusivity

110 mm2/s

Thermal Shock Resistance

7.3 to 17 points

Alloy Composition

Among wrought copper alloys, the composition of C15000 copper is notable for including zirconium (Zr). Zirconium is used to increase recrystallization temperature and to permit or facilitate certain forms of heat treatment.

Copper (Cu) 99.8 to 99.9
Zirconium (Zr) 0.1 to 0.2

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

Followup Questions

Similar Alloys

Further Reading

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