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C85700 Brass vs. C93500 Bronze

Both C85700 brass and C93500 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 65% of their average alloy composition in common.

For each property being compared, the top bar is C85700 brass and the bottom bar is C93500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 17
15
Poisson's Ratio 0.31
0.35
Shear Modulus, GPa 40
38
Tensile Strength: Ultimate (UTS), MPa 310
220
Tensile Strength: Yield (Proof), MPa 110
110

Thermal Properties

Latent Heat of Fusion, J/g 170
180
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 940
1000
Melting Onset (Solidus), °C 910
850
Specific Heat Capacity, J/kg-K 380
360
Thermal Conductivity, W/m-K 84
70
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
15
Electrical Conductivity: Equal Weight (Specific), % IACS 25
15

Otherwise Unclassified Properties

Base Metal Price, % relative 24
31
Density, g/cm3 8.0
9.0
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 47
49
Embodied Water, L/kg 330
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
28
Resilience: Unit (Modulus of Resilience), kJ/m3 59
59
Stiffness to Weight: Axial, points 7.2
6.3
Stiffness to Weight: Bending, points 20
17
Strength to Weight: Axial, points 11
6.9
Strength to Weight: Bending, points 13
9.1
Thermal Diffusivity, mm2/s 27
22
Thermal Shock Resistance, points 10
8.5

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.3
Copper (Cu), % 58 to 64
83 to 86
Iron (Fe), % 0 to 0.7
0 to 0.2
Lead (Pb), % 0.8 to 1.5
8.0 to 10
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.050
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0.5 to 1.5
4.3 to 6.0
Zinc (Zn), % 32 to 40
0 to 2.0
Residuals, % 0 to 1.3
0 to 1.0