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C68000 Brass vs. C87610 Bronze

Both C68000 brass and C87610 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 63% 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 C68000 brass and the bottom bar is C87610 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 27
22
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 40
43
Tensile Strength: Ultimate (UTS), MPa 390
350
Tensile Strength: Yield (Proof), MPa 140
140

Thermal Properties

Latent Heat of Fusion, J/g 170
270
Maximum Temperature: Mechanical, °C 120
190
Melting Completion (Liquidus), °C 880
970
Melting Onset (Solidus), °C 870
820
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 96
28
Thermal Expansion, µm/m-K 21
17

Otherwise Unclassified Properties

Base Metal Price, % relative 23
29
Density, g/cm3 8.0
8.5
Embodied Carbon, kg CO2/kg material 2.8
2.6
Embodied Energy, MJ/kg 48
43
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82
62
Resilience: Unit (Modulus of Resilience), kJ/m3 95
88
Stiffness to Weight: Axial, points 7.3
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 14
11
Strength to Weight: Bending, points 15
13
Thermal Diffusivity, mm2/s 31
8.1
Thermal Shock Resistance, points 13
13

Alloy Composition


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Aluminum (Al), % 0 to 0.010
0
Copper (Cu), % 56 to 60
90 to 94
Iron (Fe), % 0.25 to 1.3
0 to 0.2
Lead (Pb), % 0 to 0.050
0 to 0.2
Manganese (Mn), % 0.010 to 0.5
0 to 0.25
Nickel (Ni), % 0.2 to 0.8
0
Silicon (Si), % 0.040 to 0.15
3.0 to 5.0
Tin (Sn), % 0.75 to 1.1
0
Zinc (Zn), % 35.6 to 42.8
3.0 to 5.0
Residuals, % 0 to 0.5
0 to 0.5