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C86100 Bronze vs. C87400 Brass

Both C86100 bronze and C87400 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 C87400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 20
21
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 43
41
Tensile Strength: Ultimate (UTS), MPa 660
390
Tensile Strength: Yield (Proof), MPa 350
160

Thermal Properties

Latent Heat of Fusion, J/g 200
250
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
400
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
7.2

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
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
65
Resilience: Unit (Modulus of Resilience), kJ/m3 530
120
Stiffness to Weight: Axial, points 7.8
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 23
13
Strength to Weight: Bending, points 21
14
Thermal Diffusivity, mm2/s 10
8.3
Thermal Shock Resistance, points 21
14

Alloy Composition


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Aluminum (Al), % 4.5 to 5.5
0 to 0.8
Copper (Cu), % 66 to 68
79 to 85.5
Iron (Fe), % 2.0 to 4.0
0
Lead (Pb), % 0 to 0.1
0 to 1.0
Manganese (Mn), % 2.5 to 5.0
0
Silicon (Si), % 0
2.5 to 4.0
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 17.3 to 25
12 to 16
Residuals, % 0
0 to 0.8