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C87500 Brass vs. C86100 Bronze

Both C87500 brass and C86100 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 81% of their average alloy composition in common.

For each property being compared, the top bar is C87500 brass and the bottom bar is C86100 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 18
20
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
43
Tensile Strength: Ultimate (UTS), MPa 460
660
Tensile Strength: Yield (Proof), MPa 190
350

Thermal Properties

Latent Heat of Fusion, J/g 260
200
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 920
940
Melting Onset (Solidus), °C 820
900
Specific Heat Capacity, J/kg-K 410
420
Thermal Conductivity, W/m-K 28
35
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 27
24
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 44
49
Embodied Water, L/kg 300
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67
110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
530
Stiffness to Weight: Axial, points 7.4
7.8
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 16
23
Strength to Weight: Bending, points 16
21
Thermal Diffusivity, mm2/s 8.3
10
Thermal Shock Resistance, points 17
21

Alloy Composition

Aluminum (Al), % 0 to 0.5
4.5 to 5.5
Copper (Cu), % 79 to 85
66 to 68
Iron (Fe), % 0
2.0 to 4.0
Lead (Pb), % 0 to 0.5
0 to 0.1
Manganese (Mn), % 0
2.5 to 5.0
Silicon (Si), % 3.0 to 5.0
0
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 12 to 16
17.3 to 25
Residuals, % 0 to 0.5
0