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C87200 Bronze vs. CC755S Brass

Both C87200 bronze and CC755S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 64% of their average alloy composition in common.

For each property being compared, the top bar is C87200 bronze and the bottom bar is CC755S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
110
Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 30
9.5
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 43
40
Tensile Strength: Ultimate (UTS), MPa 380
390
Tensile Strength: Yield (Proof), MPa 170
250

Thermal Properties

Latent Heat of Fusion, J/g 260
170
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 970
820
Melting Onset (Solidus), °C 860
780
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 28
120
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.0
27
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
30

Otherwise Unclassified Properties

Base Metal Price, % relative 29
23
Density, g/cm3 8.6
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 44
46
Embodied Water, L/kg 310
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
33
Resilience: Unit (Modulus of Resilience), kJ/m3 130
290
Stiffness to Weight: Axial, points 7.4
7.1
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 12
14
Strength to Weight: Bending, points 14
15
Thermal Diffusivity, mm2/s 8.0
38
Thermal Shock Resistance, points 14
13

Alloy Composition

Aluminum (Al), % 0 to 1.5
0.4 to 0.7
Copper (Cu), % 89 to 99
59.5 to 61
Iron (Fe), % 0 to 2.5
0.050 to 0.2
Lead (Pb), % 0 to 0.5
1.2 to 1.7
Manganese (Mn), % 0 to 1.5
0 to 0.050
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.5
0
Silicon (Si), % 1.0 to 5.0
0 to 0.050
Tin (Sn), % 0 to 1.0
0 to 0.3
Zinc (Zn), % 0 to 5.0
35.8 to 38.9