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C93500 Bronze vs. C87500 Brass

Both C93500 bronze and C87500 brass 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 C93500 bronze and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 15
18
Poisson's Ratio 0.35
0.33
Shear Modulus, GPa 38
42
Tensile Strength: Ultimate (UTS), MPa 220
460
Tensile Strength: Yield (Proof), MPa 110
190

Thermal Properties

Latent Heat of Fusion, J/g 180
260
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 1000
920
Melting Onset (Solidus), °C 850
820
Specific Heat Capacity, J/kg-K 360
410
Thermal Conductivity, W/m-K 70
28
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 15
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 31
27
Density, g/cm3 9.0
8.3
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 49
44
Embodied Water, L/kg 350
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
67
Resilience: Unit (Modulus of Resilience), kJ/m3 59
160
Stiffness to Weight: Axial, points 6.3
7.4
Stiffness to Weight: Bending, points 17
19
Strength to Weight: Axial, points 6.9
16
Strength to Weight: Bending, points 9.1
16
Thermal Diffusivity, mm2/s 22
8.3
Thermal Shock Resistance, points 8.5
17

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.5
Antimony (Sb), % 0 to 0.3
0
Copper (Cu), % 83 to 86
79 to 85
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 8.0 to 10
0 to 0.5
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
3.0 to 5.0
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 4.3 to 6.0
0
Zinc (Zn), % 0 to 2.0
12 to 16
Residuals, % 0
0 to 0.5