UNS C19400 (CW107C) Iron-Bearing Copper
C19400 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. CW107C is the EN numeric designation for this material. C19400 is the UNS number. Additionally, the EN chemical designation is CuFe2P.
It has the lowest embodied energy among the wrought coppers in the database.
The properties of C19400 copper 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 C19400 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
2.3 to 37 %
Poisson's Ratio
0.34
Rockwell Superficial 30T Hardness
59 to 78
Shear Modulus
44 GPa 6.4 x 106 psi
Shear Strength
210 to 300 MPa 30 to 44 x 103 psi
Tensile Strength: Ultimate (UTS)
310 to 630 MPa 45 to 91 x 103 psi
Tensile Strength: Yield (Proof)
98 to 520 MPa 14 to 75 x 103 psi
Thermal Properties
Latent Heat of Fusion
210 J/g
Maximum Temperature: Mechanical
200 °C 400 °F
Melting Completion (Liquidus)
1090 °C 1990 °F
Melting Onset (Solidus)
1080 °C 1980 °F
Specific Heat Capacity
390 J/kg-K 0.093 BTU/lb-°F
Thermal Conductivity
260 W/m-K 150 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
58 to 68 % IACS
Electrical Conductivity: Equal Weight (Specific)
58 to 69 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.9 g/cm3 560 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
40 MJ/kg 17 x 103 BTU/lb
Embodied Water
300 L/kg 36 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
5.5 to 220 MJ/m3
Resilience: Unit (Modulus of Resilience)
41 to 1140 kJ/m3
Stiffness to Weight: Axial
7.3 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
9.7 to 20 points
Strength to Weight: Bending
11 to 18 points
Thermal Diffusivity
75 mm2/s
Thermal Shock Resistance
11 to 22 points
Alloy Composition
Among wrought copper alloys, the composition of C19400 copper is notable for including phosphorus (P) and containing a comparatively high amount of iron (Fe). Phosphorus is used as an alloy deoxidizer, and to reduce vulnerability to dezincification. Iron is used to increase strength inexpensively.
| Cu | 96.8 to 97.8 | |
| Fe | 2.1 to 2.6 | |
| Zn | 0.050 to 0.2 | |
| P | 0.015 to 0.15 | |
| Pb | 0 to 0.030 | |
| res. | 0 to 0.2 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B465: Standard Specification for Copper-Iron Alloy Plate, Sheet, Strip, and Rolled Bar
Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001