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.
| Cu | 84.7 to 90 | |
| Ni | 9.0 to 11 | |
| Fe | 1.0 to 1.8 | |
| Mn | 0 to 1.0 | |
| Zn | 0 to 1.0 | |
| Pb | 0 to 0.050 | |
| res. | 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