UNS C19000 (CW108C) Nickel-Phosphorus Copper
C19000 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. CW108C is the EN numeric designation for this material. C19000 is the UNS number. Additionally, the EN chemical designation is CuNi1P. And the British Standard (BS) designation is C113.
The properties of C19000 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 C19000 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
2.5 to 50 %
Poisson's Ratio
0.34
Rockwell B Hardness
45 to 94
Shear Modulus
43 GPa 6.3 x 106 psi
Shear Strength
170 to 390 MPa 25 to 57 x 103 psi
Tensile Strength: Ultimate (UTS)
260 to 760 MPa 38 to 110 x 103 psi
Tensile Strength: Yield (Proof)
140 to 630 MPa 21 to 92 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)
1040 °C 1900 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
250 W/m-K 150 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
60 % IACS
Electrical Conductivity: Equal Weight (Specific)
61 % IACS
Otherwise Unclassified Properties
Base Metal Price
31 % relative
Density
8.9 g/cm3 560 lb/ft3
Embodied Carbon
2.7 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)
18 to 110 MJ/m3
Resilience: Unit (Modulus of Resilience)
89 to 1730 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
8.2 to 24 points
Strength to Weight: Bending
10 to 21 points
Thermal Diffusivity
73 mm2/s
Thermal Shock Resistance
9.3 to 27 points
Alloy Composition
Among wrought copper alloys, the composition of C19000 copper is notable for including phosphorus (P) and nickel (Ni). Phosphorus is used as an alloy deoxidizer, and to reduce vulnerability to dezincification. Nickel is used to improve strength (particularly at elevated temperatures) and corrosion resistance.
| Cu | 96.9 to 99 | |
| Ni | 0.9 to 1.3 | |
| Zn | 0 to 0.8 | |
| P | 0.15 to 0.35 | |
| Fe | 0 to 0.1 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.