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C68700 Brass vs. C86700 Bronze

Both C68700 brass and C86700 bronze are copper alloys. They have 80% 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 C86700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 41
41
Tensile Strength: Ultimate (UTS), MPa 390
630
Tensile Strength: Yield (Proof), MPa 140
250

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 970
880
Melting Onset (Solidus), °C 930
860
Specific Heat Capacity, J/kg-K 400
400
Thermal Conductivity, W/m-K 100
89
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
17
Electrical Conductivity: Equal Weight (Specific), % IACS 25
19

Otherwise Unclassified Properties

Base Metal Price, % relative 26
23
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 46
49
Embodied Water, L/kg 340
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 90
290
Stiffness to Weight: Axial, points 7.3
7.5
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 13
22
Strength to Weight: Bending, points 14
21
Thermal Diffusivity, mm2/s 30
28
Thermal Shock Resistance, points 13
21

Alloy Composition

Aluminum (Al), % 1.8 to 2.5
1.0 to 3.0
Arsenic (As), % 0.020 to 0.1
0
Copper (Cu), % 76 to 79
55 to 60
Iron (Fe), % 0 to 0.060
1.0 to 3.0
Lead (Pb), % 0 to 0.070
0.5 to 1.5
Manganese (Mn), % 0
1.0 to 3.5
Nickel (Ni), % 0
0 to 1.0
Tin (Sn), % 0
0 to 1.5
Zinc (Zn), % 17.8 to 22.2
30 to 38
Residuals, % 0
0 to 1.0