UNS C63600 Aluminum-Silicon Bronze
C63600 bronze is a bronze formulated for primary forming into wrought products. It can have a moderately high ductility and a moderately low tensile strength among wrought bronzes.
The properties of C63600 bronze 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 C63600 bronze to: wrought bronzes (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 16 x 106 psi
Elongation at Break
30 to 66 %
Poisson's Ratio
0.34
Rockwell B Hardness
71 to 84
Shear Modulus
42 GPa 6.2 x 106 psi
Shear Strength
320 to 360 MPa 46 to 52 x 103 psi
Tensile Strength: Ultimate (UTS)
410 to 540 MPa 60 to 79 x 103 psi
Tensile Strength: Yield (Proof)
150 to 260 MPa 22 to 38 x 103 psi
Thermal Properties
Latent Heat of Fusion
230 J/g
Maximum Temperature: Mechanical
210 °C 400 °F
Melting Completion (Liquidus)
1030 °C 1890 °F
Melting Onset (Solidus)
980 °C 1800 °F
Specific Heat Capacity
410 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
57 W/m-K 33 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
12 % IACS
Electrical Conductivity: Equal Weight (Specific)
13 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
45 MJ/kg 20 x 103 BTU/lb
Embodied Water
340 L/kg 40 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
98 to 290 MJ/m3
Resilience: Unit (Modulus of Resilience)
100 to 300 kJ/m3
Stiffness to Weight: Axial
7.3 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
13 to 18 points
Strength to Weight: Bending
14 to 17 points
Thermal Diffusivity
16 mm2/s
Thermal Shock Resistance
15 to 20 points
Alloy Composition
Among wrought copper alloys, the composition of C63600 bronze is notable for including arsenic (As) and aluminum (Al). Arsenic is used to protect the alloy against dezincification. Aluminum is used to add strength and oxidation resistance.
| Cu | 93 to 96.3 | |
| Al | 3.0 to 4.0 | |
| Si | 0.7 to 1.3 | |
| Zn | 0 to 0.5 | |
| Sn | 0 to 0.2 | |
| Ni | 0 to 0.15 | |
| Fe | 0 to 0.15 | |
| As | 0 to 0.15 | |
| 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
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993