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UNS C15100 Zirconium Copper

C15100 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. C15100 is the UNS number for this material. Additionally, the EN chemical designation is CuZr0,15.

The properties of C15100 copper include seven 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 C15100 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 36 %

Poisson's Ratio


Rockwell B Hardness

30 to 64

Rockwell Superficial 30T Hardness

48 to 65

Shear Modulus

43 GPa 6.3 x 106 psi

Shear Strength

170 to 270 MPa 25 to 39 x 103 psi

Tensile Strength: Ultimate (UTS)

260 to 470 MPa 38 to 68 x 103 psi

Tensile Strength: Yield (Proof)

69 to 460 MPa 10 to 66 x 103 psi

Thermal Properties

Latent Heat of Fusion

210 J/g

Maximum Temperature: Mechanical

200 °C 390 °F

Melting Completion (Liquidus)

1100 °C 2010 °F

Melting Onset (Solidus)

1030 °C 1890 °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

95 % IACS

Electrical Conductivity: Equal Weight (Specific)

95 % IACS

Otherwise Unclassified Properties

Base Metal Price

31 % relative


9.0 g/cm3 560 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

43 MJ/kg 18 x 103 BTU/lb

Embodied Water

310 L/kg 37 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

9.3 to 71 MJ/m3

Resilience: Unit (Modulus of Resilience)

21 to 890 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

8.1 to 15 points

Strength to Weight: Bending

10 to 15 points

Thermal Diffusivity

100 mm2/s

Thermal Shock Resistance

9.3 to 17 points

Alloy Composition

Among wrought copper alloys, the composition of C15100 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)Cu 99.8 to 99.95
Zirconium (Zr)Zr 0.050 to 0.15
Residualsres. 0 to 0.1

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

Followup Questions

Similar Alloys

Further Reading

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