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C68700 Brass vs. C86800 Bronze

Both C68700 brass and C86800 bronze are copper alloys. They have 77% of their average alloy composition in common. There are 24 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 C86800 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
42
Tensile Strength: Ultimate (UTS), MPa 390
570
Tensile Strength: Yield (Proof), MPa 140
260

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 160
140
Melting Completion (Liquidus), °C 970
900
Melting Onset (Solidus), °C 930
880
Specific Heat Capacity, J/kg-K 400
400
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 25
10

Otherwise Unclassified Properties

Base Metal Price, % relative 26
24
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 46
51
Embodied Water, L/kg 340
320

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 90
310
Stiffness to Weight: Axial, points 7.3
7.7
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 13
20
Strength to Weight: Bending, points 14
19
Thermal Shock Resistance, points 13
18

Alloy Composition

Aluminum (Al), % 1.8 to 2.5
0 to 2.0
Arsenic (As), % 0.020 to 0.1
0
Copper (Cu), % 76 to 79
53.5 to 57
Iron (Fe), % 0 to 0.060
1.0 to 2.5
Lead (Pb), % 0 to 0.070
0 to 0.2
Manganese (Mn), % 0
2.5 to 4.0
Nickel (Ni), % 0
2.5 to 4.0
Tin (Sn), % 0
0 to 1.0
Zinc (Zn), % 17.8 to 22.2
28.3 to 40.5
Residuals, % 0
0 to 1.0