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Half-Hard (H02) C51000 Bronze

H02 C51000 bronze is C51000 bronze in the H02 (half hard) temper. It has the second highest ductility compared to the other variants of C51000 bronze. The graph bars on the material properties cards below compare H02 C51000 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

28 %

Poisson's Ratio

0.34

Rockwell B Hardness

75

Rockwell Superficial 30T Hardness

63

Shear Modulus

42 GPa 6.1 x 106 psi

Shear Strength

300 MPa 43 x 103 psi

Tensile Strength: Ultimate (UTS)

460 MPa 67 x 103 psi

Tensile Strength: Yield (Proof)

380 MPa 55 x 103 psi

Thermal Properties

Latent Heat of Fusion

200 J/g

Maximum Temperature: Mechanical

190 °C 370 °F

Melting Completion (Liquidus)

1050 °C 1930 °F

Melting Onset (Solidus)

960 °C 1770 °F

Specific Heat Capacity

380 J/kg-K 0.090 BTU/lb-°F

Thermal Conductivity

77 W/m-K 44 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

18 % IACS

Electrical Conductivity: Equal Weight (Specific)

18 % IACS

Otherwise Unclassified Properties

Base Metal Price

33 % relative

Density

8.8 g/cm3 550 lb/ft3

Embodied Carbon

3.1 kg CO2/kg material

Embodied Energy

50 MJ/kg 21 x 103 BTU/lb

Embodied Water

350 L/kg 42 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

120 MJ/m3

Resilience: Unit (Modulus of Resilience)

640 kJ/m3

Stiffness to Weight: Axial

7.0 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

15 points

Strength to Weight: Bending

15 points

Thermal Diffusivity

23 mm2/s

Thermal Shock Resistance

17 points

Alloy Composition

Copper (Cu)Cu 92.9 to 95.5
Tin (Sn)Sn 4.5 to 5.8
Phosphorus (P)P 0.030 to 0.35
Zinc (Zn)Zn 0 to 0.3
Iron (Fe)Fe 0 to 0.1
Lead (Pb)Pb 0 to 0.050
Residualsres. 0 to 0.5

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

Followup Questions

Further Reading

ASTM B103: Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar

Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001