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C87500 Brass vs. C94800 Bronze

Both C87500 brass and C94800 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 84% of their average alloy composition in common.

For each property being compared, the top bar is C87500 brass and the bottom bar is C94800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 18
22
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
43
Tensile Strength: Ultimate (UTS), MPa 460
310
Tensile Strength: Yield (Proof), MPa 190
160

Thermal Properties

Latent Heat of Fusion, J/g 260
200
Maximum Temperature: Mechanical, °C 170
190
Melting Completion (Liquidus), °C 920
1030
Melting Onset (Solidus), °C 820
900
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 28
39
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
12
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
12

Otherwise Unclassified Properties

Base Metal Price, % relative 27
34
Density, g/cm3 8.3
8.8
Embodied Carbon, kg CO2/kg material 2.7
3.5
Embodied Energy, MJ/kg 44
56
Embodied Water, L/kg 300
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67
58
Resilience: Unit (Modulus of Resilience), kJ/m3 160
110
Stiffness to Weight: Axial, points 7.4
7.2
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 16
9.8
Strength to Weight: Bending, points 16
12
Thermal Diffusivity, mm2/s 8.3
12
Thermal Shock Resistance, points 17
11

Alloy Composition

Aluminum (Al), % 0 to 0.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.15
Copper (Cu), % 79 to 85
84 to 89
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0 to 0.5
0.3 to 1.0
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0
4.5 to 6.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 3.0 to 5.0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
4.5 to 6.0
Zinc (Zn), % 12 to 16
1.0 to 2.5
Residuals, % 0
0 to 1.3