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C86200 Bronze vs. C87500 Brass

Both C86200 bronze and C87500 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 78% of their average alloy composition in common.

For each property being compared, the top bar is C86200 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, % 21
18
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 42
42
Tensile Strength: Ultimate (UTS), MPa 710
460
Tensile Strength: Yield (Proof), MPa 350
190

Thermal Properties

Latent Heat of Fusion, J/g 190
260
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 940
920
Melting Onset (Solidus), °C 900
820
Specific Heat Capacity, J/kg-K 410
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 23
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 340
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
67
Resilience: Unit (Modulus of Resilience), kJ/m3 540
160
Stiffness to Weight: Axial, points 7.8
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 25
16
Strength to Weight: Bending, points 22
16
Thermal Diffusivity, mm2/s 11
8.3
Thermal Shock Resistance, points 23
17

Alloy Composition


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Aluminum (Al), % 3.0 to 4.9
0 to 0.5
Copper (Cu), % 60 to 66
79 to 85
Iron (Fe), % 2.0 to 4.0
0
Lead (Pb), % 0 to 0.2
0 to 0.5
Manganese (Mn), % 2.5 to 5.0
0
Nickel (Ni), % 0 to 1.0
0
Silicon (Si), % 0
3.0 to 5.0
Tin (Sn), % 0 to 0.2
0
Zinc (Zn), % 22 to 28
12 to 16
Residuals, % 0 to 1.0
0 to 0.5