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C87600 Bronze vs. C85700 Brass

Both C87600 bronze and C85700 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is C87600 bronze and the bottom bar is C85700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 18
17
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 470
310
Tensile Strength: Yield (Proof), MPa 230
110

Thermal Properties

Latent Heat of Fusion, J/g 280
170
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 970
940
Melting Onset (Solidus), °C 860
910
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 28
84
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.0
22
Electrical Conductivity: Equal Weight (Specific), % IACS 6.4
25

Otherwise Unclassified Properties

Base Metal Price, % relative 29
24
Density, g/cm3 8.5
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 43
47
Embodied Water, L/kg 300
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
41
Resilience: Unit (Modulus of Resilience), kJ/m3 240
59
Stiffness to Weight: Axial, points 7.4
7.2
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 16
11
Strength to Weight: Bending, points 16
13
Thermal Diffusivity, mm2/s 8.1
27
Thermal Shock Resistance, points 17
10

Alloy Composition

Aluminum (Al), % 0
0 to 0.8
Copper (Cu), % 88 to 92.5
58 to 64
Iron (Fe), % 0
0 to 0.7
Lead (Pb), % 0 to 0.5
0.8 to 1.5
Nickel (Ni), % 0
0 to 1.0
Silicon (Si), % 3.5 to 5.5
0 to 0.050
Tin (Sn), % 0
0.5 to 1.5
Zinc (Zn), % 4.0 to 7.0
32 to 40
Residuals, % 0
0 to 1.3