Spring-Tempered (H08) C65100 Bronze
H08 C65100 bronze is C65100 bronze in the H08 (spring) temper. It has the second highest strength and lowest ductility compared to the other variants of C65100 bronze. The graph bars on the material properties cards below compare H08 C65100 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
120 GPa 17 x 106 psi
Elongation at Break
2.4 %
Poisson's Ratio
0.34
Rockwell B Hardness
84
Shear Modulus
43 GPa 6.3 x 106 psi
Shear Strength
300 MPa 43 x 103 psi
Tensile Strength: Ultimate (UTS)
520 MPa 75 x 103 psi
Tensile Strength: Yield (Proof)
440 MPa 63 x 103 psi
Thermal Properties
Latent Heat of Fusion
230 J/g
Maximum Temperature: Mechanical
200 °C 390 °F
Melting Completion (Liquidus)
1060 °C 1940 °F
Melting Onset (Solidus)
1030 °C 1890 °F
Specific Heat Capacity
390 J/kg-K 0.094 BTU/lb-°F
Thermal Conductivity
57 W/m-K 33 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
12 % IACS
Electrical Conductivity: Equal Weight (Specific)
12 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Calomel Potential
-280 mV
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
41 MJ/kg 18 x 103 BTU/lb
Embodied Water
300 L/kg 36 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
12 MJ/m3
Resilience: Unit (Modulus of Resilience)
820 kJ/m3
Stiffness to Weight: Axial
7.3 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
16 points
Strength to Weight: Bending
16 points
Thermal Diffusivity
16 mm2/s
Thermal Shock Resistance
18 points
Alloy Composition
| Cu | 94.5 to 99.2 | |
| Si | 0.8 to 2.0 | |
| Zn | 0 to 1.5 | |
| Fe | 0 to 0.8 | |
| Mn | 0 to 0.7 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B96: Standard Specification for Copper-Silicon Alloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and Pressure Vessels
Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993