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UNS C94100 Journal Bronze

C94100 bronze is a bronze formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has a very low heat capacity among cast bronzes. In addition, it has a very low melting temperature and a very low tensile strength.

The graph bars on the material properties cards below compare C94100 bronze to: cast 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

92 GPa 13 x 106 psi

Elongation at Break

7.8 %

Poisson's Ratio

0.36

Shear Modulus

34 GPa 4.9 x 106 psi

Tensile Strength: Ultimate (UTS)

190 MPa 28 x 103 psi

Tensile Strength: Yield (Proof)

130 MPa 19 x 103 psi

Thermal Properties

Latent Heat of Fusion

160 J/g

Maximum Temperature: Mechanical

130 °C 260 °F

Melting Completion (Liquidus)

870 °C 1590 °F

Melting Onset (Solidus)

790 °C 1460 °F

Specific Heat Capacity

330 J/kg-K 0.078 BTU/lb-°F

Thermal Expansion

20 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

9.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.8 % IACS

Otherwise Unclassified Properties

Base Metal Price

29 % relative

Density

9.2 g/cm3 570 lb/ft3

Embodied Carbon

3.0 kg CO2/kg material

Embodied Energy

48 MJ/kg 20 x 103 BTU/lb

Embodied Water

370 L/kg 44 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

14 MJ/m3

Resilience: Unit (Modulus of Resilience)

97 kJ/m3

Stiffness to Weight: Axial

5.5 points

Stiffness to Weight: Bending

16 points

Strength to Weight: Axial

5.8 points

Strength to Weight: Bending

8.1 points

Thermal Shock Resistance

7.6 points

Alloy Composition

Among cast copper alloys, the composition of C94100 bronze is notable for containing a comparatively high amount of lead (Pb). Lead is used to improve machinability and bearing properties, at the cost of toxicity. It also adds pressure tightness to castings.

Copper (Cu) 72 to 79
Lead (Pb) 18 to 22
Tin (Sn) 4.5 to 6.5
Phosphorus (P) 0 to 1.5
Nickel (Ni) 0 to 1.0
Zinc (Zn) 0 to 1.0
Antimony (Sb) 0 to 0.8
Iron (Fe) 0 to 0.25
Sulfur (S) 0 to 0.080
Silicon (Si) 0 to 0.0050
Aluminum (Al) 0 to 0.0050
Residuals 0 to 1.3

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

Followup Questions

Similar Alloys

Further Reading

ASTM B505: Standard Specification for Copper Alloy Continuous Castings

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