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C68700 Brass vs. C86300 Bronze

Both C68700 brass and C86300 bronze are copper alloys. They have 85% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C68700 brass and the bottom bar is C86300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 41
42
Tensile Strength: Ultimate (UTS), MPa 390
850
Tensile Strength: Yield (Proof), MPa 140
480

Thermal Properties

Latent Heat of Fusion, J/g 190
200
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 970
920
Melting Onset (Solidus), °C 930
890
Specific Heat Capacity, J/kg-K 400
420
Thermal Conductivity, W/m-K 100
35
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 25
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 26
23
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 46
51
Embodied Water, L/kg 340
360

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 90
1030
Stiffness to Weight: Axial, points 7.3
7.8
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 13
30
Strength to Weight: Bending, points 14
25
Thermal Diffusivity, mm2/s 30
11
Thermal Shock Resistance, points 13
28

Alloy Composition

Aluminum (Al), % 1.8 to 2.5
5.0 to 7.5
Arsenic (As), % 0.020 to 0.1
0
Copper (Cu), % 76 to 79
60 to 66
Iron (Fe), % 0 to 0.060
2.0 to 4.0
Lead (Pb), % 0 to 0.070
0 to 0.2
Manganese (Mn), % 0
2.5 to 5.0
Nickel (Ni), % 0
0 to 1.0
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 17.8 to 22.2
22 to 28
Residuals, % 0 to 0.5
0 to 1.0