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C68700 Brass vs. C94300 Bronze

Both C68700 brass and C94300 bronze are copper alloys. They have 70% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C68700 brass and the bottom bar is C94300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
87
Poisson's Ratio 0.32
0.36
Shear Modulus, GPa 41
32
Tensile Strength: Ultimate (UTS), MPa 390
180
Tensile Strength: Yield (Proof), MPa 140
120

Thermal Properties

Latent Heat of Fusion, J/g 190
150
Maximum Temperature: Mechanical, °C 160
110
Melting Completion (Liquidus), °C 970
820
Melting Onset (Solidus), °C 930
760
Specific Heat Capacity, J/kg-K 400
320
Thermal Conductivity, W/m-K 100
63
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 25
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 26
28
Density, g/cm3 8.3
9.3
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 46
47
Embodied Water, L/kg 340
370

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 90
77
Stiffness to Weight: Axial, points 7.3
5.2
Stiffness to Weight: Bending, points 19
16
Strength to Weight: Axial, points 13
5.2
Strength to Weight: Bending, points 14
7.4
Thermal Diffusivity, mm2/s 30
21
Thermal Shock Resistance, points 13
7.1

Alloy Composition


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Aluminum (Al), % 1.8 to 2.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.8
Arsenic (As), % 0.020 to 0.1
0
Copper (Cu), % 76 to 79
67 to 72
Iron (Fe), % 0 to 0.060
0 to 0.15
Lead (Pb), % 0 to 0.070
23 to 27
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.5 to 6.0
Zinc (Zn), % 17.8 to 22.2
0 to 0.8
Residuals, % 0 to 0.5
0 to 1.0