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C84200 Brass vs. C87600 Bronze

Both C84200 brass and C87600 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 86% of their average alloy composition in common.

For each property being compared, the top bar is C84200 brass and the bottom bar is C87600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 15
18
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 250
470
Tensile Strength: Yield (Proof), MPa 120
230

Thermal Properties

Latent Heat of Fusion, J/g 180
280
Maximum Temperature: Mechanical, °C 150
190
Melting Completion (Liquidus), °C 990
970
Melting Onset (Solidus), °C 840
860
Specific Heat Capacity, J/kg-K 370
410
Thermal Conductivity, W/m-K 72
28
Thermal Expansion, µm/m-K 19
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
6.4

Otherwise Unclassified Properties

Base Metal Price, % relative 30
29
Density, g/cm3 8.5
8.5
Embodied Carbon, kg CO2/kg material 3.1
2.7
Embodied Energy, MJ/kg 51
43
Embodied Water, L/kg 350
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
71
Resilience: Unit (Modulus of Resilience), kJ/m3 72
240
Stiffness to Weight: Axial, points 6.9
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.2
16
Strength to Weight: Bending, points 10
16
Thermal Diffusivity, mm2/s 23
8.1
Thermal Shock Resistance, points 9.1
17

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.25
0
Copper (Cu), % 78 to 82
88 to 92.5
Iron (Fe), % 0 to 0.4
0
Lead (Pb), % 2.0 to 3.0
0 to 0.5
Nickel (Ni), % 0 to 0.8
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
3.5 to 5.5
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 4.0 to 6.0
0
Zinc (Zn), % 10 to 16
4.0 to 7.0
Residuals, % 0 to 0.7
0 to 0.5