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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

Copper (Cu) 94.5 to 99.2
Silicon (Si) 0.8 to 2.0
Zinc (Zn) 0 to 1.5
Iron (Fe) 0 to 0.8
Manganese (Mn) 0 to 0.7
Lead (Pb) 0 to 0.050
Residuals 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