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C89320 Bronze vs. C87400 Brass

Both C89320 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.

For each property being compared, the top bar is C89320 bronze and the bottom bar is C87400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 17
21
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 270
390
Tensile Strength: Yield (Proof), MPa 140
160

Thermal Properties

Latent Heat of Fusion, J/g 190
250
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 1050
920
Melting Onset (Solidus), °C 930
820
Specific Heat Capacity, J/kg-K 360
400
Thermal Conductivity, W/m-K 56
28
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 15
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 37
27
Density, g/cm3 8.9
8.3
Embodied Carbon, kg CO2/kg material 3.5
2.7
Embodied Energy, MJ/kg 56
44
Embodied Water, L/kg 490
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38
65
Resilience: Unit (Modulus of Resilience), kJ/m3 93
120
Stiffness to Weight: Axial, points 6.8
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.5
13
Strength to Weight: Bending, points 10
14
Thermal Diffusivity, mm2/s 17
8.3
Thermal Shock Resistance, points 10
14

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.8
Antimony (Sb), % 0 to 0.35
0
Bismuth (Bi), % 4.0 to 6.0
0
Copper (Cu), % 87 to 91
79 to 85.5
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0 to 0.090
0 to 1.0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.3
0
Silicon (Si), % 0 to 0.0050
2.5 to 4.0
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 5.0 to 7.0
0
Zinc (Zn), % 0 to 1.0
12 to 16
Residuals, % 0 to 0.5
0 to 0.8