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C87500 Brass vs. C94300 Bronze

Both C87500 brass and C94300 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 70% of their average alloy composition in common.

For each property being compared, the top bar is C87500 brass and the bottom bar is C94300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
87
Elongation at Break, % 18
9.7
Poisson's Ratio 0.33
0.36
Shear Modulus, GPa 42
32
Tensile Strength: Ultimate (UTS), MPa 460
180
Tensile Strength: Yield (Proof), MPa 190
120

Thermal Properties

Latent Heat of Fusion, J/g 260
150
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 920
820
Melting Onset (Solidus), °C 820
760
Specific Heat Capacity, J/kg-K 410
320
Thermal Conductivity, W/m-K 28
63
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 27
28
Density, g/cm3 8.3
9.3
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 44
47
Embodied Water, L/kg 300
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67
15
Resilience: Unit (Modulus of Resilience), kJ/m3 160
77
Stiffness to Weight: Axial, points 7.4
5.2
Stiffness to Weight: Bending, points 19
16
Strength to Weight: Axial, points 16
5.2
Strength to Weight: Bending, points 16
7.4
Thermal Diffusivity, mm2/s 8.3
21
Thermal Shock Resistance, points 17
7.1

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.8
Copper (Cu), % 79 to 85
67 to 72
Iron (Fe), % 0
0 to 0.15
Lead (Pb), % 0 to 0.5
23 to 27
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 3.0 to 5.0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.5 to 6.0
Zinc (Zn), % 12 to 16
0 to 0.8
Residuals, % 0 to 0.5
0 to 1.0