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C87200 Bronze vs. CC767S Brass

Both C87200 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 C87200 bronze and the bottom bar is CC767S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
86
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 30
34
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 43
40
Tensile Strength: Ultimate (UTS), MPa 380
430
Tensile Strength: Yield (Proof), MPa 170
150

Thermal Properties

Latent Heat of Fusion, J/g 260
180
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 970
840
Melting Onset (Solidus), °C 860
790
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 28
110
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.0
32
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
36

Otherwise Unclassified Properties

Base Metal Price, % relative 29
23
Density, g/cm3 8.6
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 44
47
Embodied Water, L/kg 310
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
110
Resilience: Unit (Modulus of Resilience), kJ/m3 130
100
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 12
15
Strength to Weight: Bending, points 14
16
Thermal Diffusivity, mm2/s 8.0
34
Thermal Shock Resistance, points 14
14

Alloy Composition

Aluminum (Al), % 0 to 1.5
0.1 to 0.8
Copper (Cu), % 89 to 99
58 to 64
Iron (Fe), % 0 to 2.5
0 to 0.5
Lead (Pb), % 0 to 0.5
0 to 0.1
Manganese (Mn), % 0 to 1.5
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.5
0
Silicon (Si), % 1.0 to 5.0
0 to 0.2
Tin (Sn), % 0 to 1.0
0 to 0.1
Zinc (Zn), % 0 to 5.0
32.8 to 41.9