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C87400 Brass vs. C94900 Bronze

Both C87400 brass and C94900 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. There are 26 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C87400 brass and the bottom bar is C94900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
17
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 41
41
Tensile Strength: Ultimate (UTS), MPa 390
300
Tensile Strength: Yield (Proof), MPa 160
130

Thermal Properties

Latent Heat of Fusion, J/g 250
190
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 920
980
Melting Onset (Solidus), °C 820
910
Specific Heat Capacity, J/kg-K 400
370
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
14
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
14

Otherwise Unclassified Properties

Base Metal Price, % relative 27
32
Density, g/cm3 8.3
8.8
Embodied Carbon, kg CO2/kg material 2.7
3.4
Embodied Energy, MJ/kg 44
55
Embodied Water, L/kg 310
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
41
Resilience: Unit (Modulus of Resilience), kJ/m3 120
72
Stiffness to Weight: Axial, points 7.4
6.9
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 13
9.4
Strength to Weight: Bending, points 14
11
Thermal Shock Resistance, points 14
11

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 79 to 85.5
79 to 81
Iron (Fe), % 0
0 to 0.3
Lead (Pb), % 0 to 1.0
4.0 to 6.0
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0
4.0 to 6.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 2.5 to 4.0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 12 to 16
4.0 to 6.0
Residuals, % 0 to 0.8
0 to 0.8