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C91100 Bronze vs. C87400 Brass

Both C91100 bronze and C87400 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 83% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C91100 bronze and the bottom bar is C87400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 2.0
21
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 39
41
Tensile Strength: Ultimate (UTS), MPa 240
390
Tensile Strength: Yield (Proof), MPa 170
160

Thermal Properties

Latent Heat of Fusion, J/g 180
250
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 950
920
Melting Onset (Solidus), °C 820
820
Specific Heat Capacity, J/kg-K 360
400
Thermal Conductivity, W/m-K 63
28
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 38
27
Density, g/cm3 8.7
8.3
Embodied Carbon, kg CO2/kg material 4.2
2.7
Embodied Energy, MJ/kg 69
44
Embodied Water, L/kg 440
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
65
Resilience: Unit (Modulus of Resilience), kJ/m3 140
120
Stiffness to Weight: Axial, points 6.7
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.7
13
Strength to Weight: Bending, points 9.9
14
Thermal Diffusivity, mm2/s 20
8.3
Thermal Shock Resistance, points 9.1
14

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.8
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 82 to 85
79 to 85.5
Iron (Fe), % 0 to 0.25
0
Lead (Pb), % 0 to 0.25
0 to 1.0
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 1.0
0
Silicon (Si), % 0 to 0.0050
2.5 to 4.0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 15 to 17
0
Zinc (Zn), % 0 to 0.25
12 to 16
Residuals, % 0
0 to 0.8