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C87500 Brass vs. C93900 Bronze

Both C87500 brass and C93900 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is C87500 brass and the bottom bar is C93900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
95
Elongation at Break, % 18
5.6
Poisson's Ratio 0.33
0.36
Shear Modulus, GPa 42
35
Tensile Strength: Ultimate (UTS), MPa 460
190
Tensile Strength: Yield (Proof), MPa 190
130

Thermal Properties

Latent Heat of Fusion, J/g 260
170
Maximum Temperature: Mechanical, °C 170
140
Melting Completion (Liquidus), °C 920
940
Melting Onset (Solidus), °C 820
850
Specific Heat Capacity, J/kg-K 410
340
Thermal Conductivity, W/m-K 28
52
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
11
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 27
30
Density, g/cm3 8.3
9.1
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 44
49
Embodied Water, L/kg 300
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67
9.5
Resilience: Unit (Modulus of Resilience), kJ/m3 160
83
Stiffness to Weight: Axial, points 7.4
5.8
Stiffness to Weight: Bending, points 19
17
Strength to Weight: Axial, points 16
5.9
Strength to Weight: Bending, points 16
8.1
Thermal Diffusivity, mm2/s 8.3
17
Thermal Shock Resistance, points 17
7.5

Alloy Composition

Aluminum (Al), % 0 to 0.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.5
Copper (Cu), % 79 to 85
76.5 to 79.5
Iron (Fe), % 0
0 to 0.4
Lead (Pb), % 0 to 0.5
14 to 18
Nickel (Ni), % 0
0 to 0.8
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 3.0 to 5.0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
5.0 to 7.0
Zinc (Zn), % 12 to 16
0 to 1.5
Residuals, % 0
0 to 1.1