Drawn And Stress Relieved (HR50) C63000 Bronze

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HR50 C63000 bronze is C63000 bronze in the HR50 (drawn and stress relieved) condition. It has the second highest strength and lowest ductility compared to the other variants of C63000 bronze. The graph bars on the material properties cards below compare HR50 C63000 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

7.9 %

Poisson's Ratio

0.34

Shear Modulus

44 GPa 6.3 x 106 psi

Shear Strength

420 MPa 61 x 103 psi

Tensile Strength: Ultimate (UTS)

720 MPa 100 x 103 psi

Tensile Strength: Yield (Proof)

360 MPa 52 x 103 psi

Thermal Properties

Latent Heat of Fusion

230 J/g

Maximum Temperature: Mechanical

230 °C 450 °F

Melting Completion (Liquidus)

1050 °C 1930 °F

Melting Onset (Solidus)

1040 °C 1900 °F

Specific Heat Capacity

440 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

39 W/m-K 23 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

7.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

29 % relative

Density

8.2 g/cm3 510 lb/ft3

Embodied Carbon

3.5 kg CO2/kg material

Embodied Energy

57 MJ/kg 24 x 103 BTU/lb

Embodied Water

390 L/kg 46 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

47 MJ/m3

Resilience: Unit (Modulus of Resilience)

550 kJ/m3

Stiffness to Weight: Axial

7.9 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

24 points

Strength to Weight: Bending

22 points

Thermal Diffusivity

11 mm2/s

Thermal Shock Resistance

25 points

Alloy Composition

Copper (Cu)Cu	76.8 to 85
Aluminum (Al)Al	9.0 to 11
Nickel (Ni)Ni	4.0 to 5.5
Iron (Fe)Fe	2.0 to 4.0
Manganese (Mn)Mn	0 to 1.5
Zinc (Zn)Zn	0 to 0.3
Silicon (Si)Si	0 to 0.25
Tin (Sn)Sn	0 to 0.2
Residualsres.	0 to 0.5

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

Followup Questions

How are the material properties defined?How do I compare this exact variant to another material?

Further Reading

ASTM B150: Standard Specification for Aluminum Bronze Rod, Bar, and Shapes

ASTM B124: Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes

ASTM B283: Standard Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)

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

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Table of Contents

IntroductionMechanical PropertiesThermal PropertiesElectrical PropertiesOtherwise Unclassified PropertiesCommon CalculationsAlloy CompositionFollowup QuestionsFurther Reading

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"Drawn and Stress Relieved (HR50) C63000 Bronze", www.makeitfrom.com/material-properties/Drawn-and-Stress-Relieved-HR50-C63000-Bronze, retrieved 2026-03-11.