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C87600 Bronze vs. C84200 Brass

Both C87600 bronze and C84200 brass 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 C87600 bronze and the bottom bar is C84200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition


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