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Full-Hard (H04) C66100 Bronze

H04 C66100 bronze is C66100 bronze in the H04 (full hard) temper. It has the second highest strength and second lowest ductility compared to the other variants of C66100 bronze. The graph bars on the material properties cards below compare H04 C66100 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

15 %

Poisson's Ratio

0.34

Rockwell B Hardness

80

Shear Modulus

43 GPa 6.2 x 106 psi

Shear Strength

380 MPa 55 x 103 psi

Tensile Strength: Ultimate (UTS)

620 MPa 90 x 103 psi

Tensile Strength: Yield (Proof)

330 MPa 48 x 103 psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Maximum Temperature: Mechanical

200 °C 390 °F

Melting Completion (Liquidus)

1050 °C 1930 °F

Melting Onset (Solidus)

1000 °C 1830 °F

Specific Heat Capacity

400 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

34 W/m-K 19 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

29 % relative

Density

8.7 g/cm3 540 lb/ft3

Embodied Carbon

2.6 kg CO2/kg material

Embodied Energy

42 MJ/kg 18 x 103 BTU/lb

Embodied Water

300 L/kg 36 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

78 MJ/m3

Resilience: Unit (Modulus of Resilience)

470 kJ/m3

Stiffness to Weight: Axial

7.4 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

20 points

Strength to Weight: Bending

19 points

Thermal Diffusivity

9.7 mm2/s

Thermal Shock Resistance

23 points

Alloy Composition

Copper (Cu) 92 to 97
Silicon (Si) 2.8 to 3.5
Manganese (Mn) 0 to 1.5
Zinc (Zn) 0 to 1.5
Lead (Pb) 0.2 to 0.8
Iron (Fe) 0 to 0.25
Residuals 0 to 0.5

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM B98: Standard Specification for Copper-Silicon Alloy Rod, Bar and Shapes

ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001