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Half-Hard (H02) C53400 Bronze

H02 C53400 bronze is C53400 bronze in the H02 (half hard) temper. It has the highest ductility compared to the other variants of C53400 bronze. The graph bars on the material properties cards below compare H02 C53400 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

67

Rockwell Superficial 30T Hardness

63

Shear Modulus

42 GPa 6.0 x 106 psi

Shear Strength

280 MPa 41 x 103 psi

Tensile Strength: Ultimate (UTS)

430 MPa 63 x 103 psi

Tensile Strength: Yield (Proof)

350 MPa 51 x 103 psi

Thermal Properties

Latent Heat of Fusion

200 J/g

Maximum Temperature: Mechanical

180 °C 360 °F

Melting Completion (Liquidus)

1050 °C 1920 °F

Melting Onset (Solidus)

950 °C 1750 °F

Specific Heat Capacity

380 J/kg-K 0.090 BTU/lb-°F

Thermal Conductivity

69 W/m-K 40 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

15 % IACS

Electrical Conductivity: Equal Weight (Specific)

15 % IACS

Otherwise Unclassified Properties

Base Metal Price

32 % relative

Density

8.9 g/cm3 550 lb/ft3

Embodied Carbon

3.0 kg CO2/kg material

Embodied Energy

49 MJ/kg 21 x 103 BTU/lb

Embodied Water

350 L/kg 41 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

110 MJ/m3

Resilience: Unit (Modulus of Resilience)

550 kJ/m3

Stiffness to Weight: Axial

7.0 points

Stiffness to Weight: Bending

18 points

Strength to Weight: Axial

14 points

Strength to Weight: Bending

14 points

Thermal Diffusivity

21 mm2/s

Thermal Shock Resistance

16 points

Alloy Composition

Copper (Cu)Cu 91.8 to 95.7
Tin (Sn)Sn 3.5 to 5.8
Lead (Pb)Pb 0.8 to 1.2
Phosphorus (P)P 0.030 to 0.35
Zinc (Zn)Zn 0 to 0.3
Iron (Fe)Fe 0 to 0.1
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

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