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C68100 Brass vs. CC331G Bronze

Both C68100 brass and CC331G bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 60% of their average alloy composition in common. There are 28 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 C68100 brass and the bottom bar is CC331G bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 29
20
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 40
43
Tensile Strength: Ultimate (UTS), MPa 380
620
Tensile Strength: Yield (Proof), MPa 140
240

Thermal Properties

Latent Heat of Fusion, J/g 170
230
Maximum Temperature: Mechanical, °C 120
220
Melting Completion (Liquidus), °C 890
1060
Melting Onset (Solidus), °C 870
1000
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 98
61
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
13
Electrical Conductivity: Equal Weight (Specific), % IACS 27
14

Otherwise Unclassified Properties

Base Metal Price, % relative 23
28
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 2.8
3.2
Embodied Energy, MJ/kg 47
53
Embodied Water, L/kg 330
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
97
Resilience: Unit (Modulus of Resilience), kJ/m3 94
250
Stiffness to Weight: Axial, points 7.3
7.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 13
21
Strength to Weight: Bending, points 15
19
Thermal Diffusivity, mm2/s 32
17
Thermal Shock Resistance, points 13
22

Alloy Composition

Aluminum (Al), % 0 to 0.010
8.5 to 10.5
Copper (Cu), % 56 to 60
83 to 86.5
Iron (Fe), % 0.25 to 1.3
1.5 to 3.5
Lead (Pb), % 0 to 0.050
0 to 0.1
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0.010 to 0.5
0 to 1.0
Nickel (Ni), % 0
0 to 1.5
Silicon (Si), % 0.040 to 0.15
0 to 0.2
Tin (Sn), % 0.75 to 1.1
0 to 0.2
Zinc (Zn), % 36.4 to 43
0 to 0.5
Residuals, % 0 to 0.5
0