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C85400 Brass vs. C86800 Bronze

Both C85400 brass and C86800 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 85% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C85400 brass and the bottom bar is C86800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 23
22
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 220
570
Tensile Strength: Yield (Proof), MPa 85
260

Thermal Properties

Latent Heat of Fusion, J/g 180
180
Maximum Temperature: Mechanical, °C 130
140
Melting Completion (Liquidus), °C 940
900
Melting Onset (Solidus), °C 940
880
Specific Heat Capacity, J/kg-K 380
400
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 22
10

Otherwise Unclassified Properties

Base Metal Price, % relative 25
24
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 46
51
Embodied Water, L/kg 330
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
100
Resilience: Unit (Modulus of Resilience), kJ/m3 35
310
Stiffness to Weight: Axial, points 7.0
7.7
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 7.5
20
Strength to Weight: Bending, points 9.9
19
Thermal Shock Resistance, points 7.6
18

Alloy Composition

Aluminum (Al), % 0 to 0.35
0 to 2.0
Copper (Cu), % 65 to 70
53.5 to 57
Iron (Fe), % 0 to 0.7
1.0 to 2.5
Lead (Pb), % 1.5 to 3.8
0 to 0.2
Manganese (Mn), % 0
2.5 to 4.0
Nickel (Ni), % 0 to 1.0
2.5 to 4.0
Silicon (Si), % 0 to 0.050
0
Tin (Sn), % 0.5 to 1.5
0 to 1.0
Zinc (Zn), % 24 to 32
28.3 to 40.5
Residuals, % 0
0 to 1.0