UNS C19800 Zinc-Tin-Magnesium Copper
C19800 copper is a lightly alloyed grade of copper, formulated for primary forming into wrought products. It can have a moderately high tensile strength and a moderately low ductility among wrought coppers.
The properties of C19800 copper include three 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 C19800 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
110 GPa 17 x 106 psi
Elongation at Break
9.0 to 12 %
Poisson's Ratio
0.34
Shear Modulus
43 GPa 6.2 x 106 psi
Shear Strength
260 to 330 MPa 38 to 47 x 103 psi
Tensile Strength: Ultimate (UTS)
430 to 550 MPa 63 to 80 x 103 psi
Tensile Strength: Yield (Proof)
420 to 550 MPa 61 to 80 x 103 psi
Thermal Properties
Latent Heat of Fusion
210 J/g
Maximum Temperature: Mechanical
200 °C 390 °F
Melting Completion (Liquidus)
1070 °C 1960 °F
Melting Onset (Solidus)
1050 °C 1920 °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
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
61 % IACS
Electrical Conductivity: Equal Weight (Specific)
62 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.9 g/cm3 550 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
43 MJ/kg 18 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
49 to 52 MJ/m3
Resilience: Unit (Modulus of Resilience)
770 to 1320 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
14 to 17 points
Strength to Weight: Bending
14 to 17 points
Thermal Diffusivity
75 mm2/s
Thermal Shock Resistance
15 to 20 points
Alloy Composition
Among wrought copper alloys, the composition of C19800 copper is notable for including magnesium (Mg). Magnesium is used to improve strain hardenability. This increases strength but reduces the ability to form the alloy into complex shapes.
| Cu | 95.7 to 99.47 | |
| Zn | 0.3 to 1.5 | |
| Sn | 0.1 to 1.0 | |
| Mg | 0.1 to 1.0 | |
| Fe | 0.020 to 0.5 | |
| P | 0.010 to 0.1 | |
| res. | 0 to 0.2 |
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