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C85700 Brass vs. C90400 Bronze

Both C85700 brass and C90400 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 66% 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 C85700 brass and the bottom bar is C90400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 17
24
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 310
310
Tensile Strength: Yield (Proof), MPa 110
180

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 940
990
Melting Onset (Solidus), °C 910
850
Specific Heat Capacity, J/kg-K 380
370
Thermal Conductivity, W/m-K 84
75
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
12
Electrical Conductivity: Equal Weight (Specific), % IACS 25
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
34
Density, g/cm3 8.0
8.7
Embodied Carbon, kg CO2/kg material 2.8
3.5
Embodied Energy, MJ/kg 47
56
Embodied Water, L/kg 330
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
65
Resilience: Unit (Modulus of Resilience), kJ/m3 59
150
Stiffness to Weight: Axial, points 7.2
7.0
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 11
10
Strength to Weight: Bending, points 13
12
Thermal Diffusivity, mm2/s 27
23
Thermal Shock Resistance, points 10
11

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.020
Boron (B), % 0
0 to 0.1
Copper (Cu), % 58 to 64
86 to 89
Iron (Fe), % 0 to 0.7
0 to 0.4
Lead (Pb), % 0.8 to 1.5
0 to 0.090
Manganese (Mn), % 0
0 to 0.010
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.050
0 to 0.0050
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0.5 to 1.5
7.5 to 8.5
Zinc (Zn), % 32 to 40
1.0 to 5.0
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0 to 1.3
0 to 0.7