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C87500 Brass vs. C86200 Bronze

Both C87500 brass and C86200 bronze 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 C87500 brass and the bottom bar is C86200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 18
21
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
42
Tensile Strength: Ultimate (UTS), MPa 460
710
Tensile Strength: Yield (Proof), MPa 190
350

Thermal Properties

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

Common Calculations

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

Alloy Composition

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