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C86100 Bronze vs. C87500 Brass

Both C86100 bronze and C87500 brass 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 C86100 bronze and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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