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C85700 Brass vs. C93800 Bronze

Both C85700 brass and C93800 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 C93800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
96
Elongation at Break, % 17
9.7
Poisson's Ratio 0.31
0.35
Shear Modulus, GPa 40
35
Tensile Strength: Ultimate (UTS), MPa 310
200
Tensile Strength: Yield (Proof), MPa 110
120

Thermal Properties

Latent Heat of Fusion, J/g 170
170
Maximum Temperature: Mechanical, °C 120
140
Melting Completion (Liquidus), °C 940
940
Melting Onset (Solidus), °C 910
850
Specific Heat Capacity, J/kg-K 380
340
Thermal Conductivity, W/m-K 84
52
Thermal Expansion, µm/m-K 21
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
11
Electrical Conductivity: Equal Weight (Specific), % IACS 25
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
31
Density, g/cm3 8.0
9.1
Embodied Carbon, kg CO2/kg material 2.8
3.2
Embodied Energy, MJ/kg 47
51
Embodied Water, L/kg 330
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
17
Resilience: Unit (Modulus of Resilience), kJ/m3 59
70
Stiffness to Weight: Axial, points 7.2
5.9
Stiffness to Weight: Bending, points 20
17
Strength to Weight: Axial, points 11
6.1
Strength to Weight: Bending, points 13
8.4
Thermal Diffusivity, mm2/s 27
17
Thermal Shock Resistance, points 10
8.1

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.8
Copper (Cu), % 58 to 64
75 to 79
Iron (Fe), % 0 to 0.7
0 to 0.15
Lead (Pb), % 0.8 to 1.5
13 to 16
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
6.3 to 7.5
Zinc (Zn), % 32 to 40
0 to 0.8
Residuals, % 0 to 1.3
0 to 1.0