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C90400 Bronze vs. CC767S Brass

Both C90400 bronze and CC767S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 65% of their average alloy composition in common.

For each property being compared, the top bar is C90400 bronze and the bottom bar is CC767S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77
86
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 24
34
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 41
40
Tensile Strength: Ultimate (UTS), MPa 310
430
Tensile Strength: Yield (Proof), MPa 180
150

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 990
840
Melting Onset (Solidus), °C 850
790
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 75
110
Thermal Expansion, µm/m-K 18
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
32
Electrical Conductivity: Equal Weight (Specific), % IACS 12
36

Otherwise Unclassified Properties

Base Metal Price, % relative 34
23
Density, g/cm3 8.7
8.0
Embodied Carbon, kg CO2/kg material 3.5
2.7
Embodied Energy, MJ/kg 56
47
Embodied Water, L/kg 370
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
100
Stiffness to Weight: Axial, points 7.0
7.3
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 10
15
Strength to Weight: Bending, points 12
16
Thermal Diffusivity, mm2/s 23
34
Thermal Shock Resistance, points 11
14

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0.1 to 0.8
Antimony (Sb), % 0 to 0.020
0
Boron (B), % 0 to 0.1
0
Copper (Cu), % 86 to 89
58 to 64
Iron (Fe), % 0 to 0.4
0 to 0.5
Lead (Pb), % 0 to 0.090
0 to 0.1
Manganese (Mn), % 0 to 0.010
0 to 0.5
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 0.0050
0 to 0.2
Sulfur (S), % 0.1 to 0.65
0
Tin (Sn), % 7.5 to 8.5
0 to 0.1
Zinc (Zn), % 1.0 to 5.0
32.8 to 41.9
Zirconium (Zr), % 0 to 0.1
0
Residuals, % 0 to 0.7
0