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UNS C70600 (CW352H) Copper-Nickel

C70600 copper-nickel is a copper-nickel alloy formulated for primary forming into wrought products. CW352H is the EN numeric designation for this material. C70600 is the UNS number. Additionally, the EN chemical designation is CuNi10Fe1Mn. The British Standard (BS) designation is CN102. And the common industry name is Cupronickel 10.

It can have the lowest tensile strength among the wrought copper-nickels in the database.

The properties of C70600 copper-nickel include nine 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 C70600 copper-nickel to: wrought copper-nickels (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 18 x 106 psi

Elongation at Break

3.0 to 34 %

Poisson's Ratio

0.34

Shear Modulus

46 GPa 6.7 x 106 psi

Shear Strength

190 to 330 MPa 28 to 47 x 103 psi

Tensile Strength: Ultimate (UTS)

290 to 570 MPa 42 to 82 x 103 psi

Tensile Strength: Yield (Proof)

63 to 270 MPa 9.1 to 39 x 103 psi

Thermal Properties

Latent Heat of Fusion

220 J/g

Maximum Temperature: Mechanical

220 °C 430 °F

Melting Completion (Liquidus)

1150 °C 2100 °F

Melting Onset (Solidus)

1100 °C 2010 °F

Specific Heat Capacity

390 J/kg-K 0.094 BTU/lb-°F

Thermal Conductivity

44 W/m-K 26 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

9.8 % IACS

Electrical Conductivity: Equal Weight (Specific)

9.9 % IACS

Otherwise Unclassified Properties

Base Metal Price

33 % relative

Calomel Potential

-280 mV

Density

8.9 g/cm3 560 lb/ft3

Embodied Carbon

3.4 kg CO2/kg material

Embodied Energy

51 MJ/kg 22 x 103 BTU/lb

Embodied Water

300 L/kg 36 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

6.5 to 160 MJ/m3

Resilience: Unit (Modulus of Resilience)

16 to 290 kJ/m3

Stiffness to Weight: Axial

7.7 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

9.1 to 18 points

Strength to Weight: Bending

11 to 17 points

Thermal Diffusivity

13 mm2/s

Thermal Shock Resistance

9.8 to 19 points

Alloy Composition

Among wrought copper alloys, the composition of C70600 copper-nickel is notable for containing a comparatively high amount of iron (Fe) and including manganese (Mn). Iron is used to increase strength inexpensively. Manganese is used to improve strength without a proportional reduction in ductility.

Copper (Cu) 84.7 to 90
Nickel (Ni) 9.0 to 11
Iron (Fe) 1.0 to 1.8
Manganese (Mn) 0 to 1.0
Zinc (Zn) 0 to 1.0
Lead (Pb) 0 to 0.050
Residuals 0 to 0.5

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

Followup Questions

Similar Alloys

Further Reading

ASTM B151: Standard Specification for Copper-Nickel-Zinc Alloy (Nickel Silver) and Copper-Nickel Rod and Bar

ASTM B111: Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

ASTM B122: Standard Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled Bar

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