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C99700 Brass vs. C87600 Bronze

Both C99700 brass and C87600 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 26 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C99700 brass and the bottom bar is C87600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 25
18
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 46
42
Tensile Strength: Ultimate (UTS), MPa 380
470
Tensile Strength: Yield (Proof), MPa 170
230

Thermal Properties

Latent Heat of Fusion, J/g 200
280
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 900
970
Melting Onset (Solidus), °C 880
860
Specific Heat Capacity, J/kg-K 410
410
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
6.4

Otherwise Unclassified Properties

Base Metal Price, % relative 25
29
Density, g/cm3 8.1
8.5
Embodied Carbon, kg CO2/kg material 3.3
2.7
Embodied Energy, MJ/kg 53
43
Embodied Water, L/kg 320
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
71
Resilience: Unit (Modulus of Resilience), kJ/m3 120
240
Stiffness to Weight: Axial, points 8.3
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 13
16
Strength to Weight: Bending, points 14
16
Thermal Shock Resistance, points 11
17

Alloy Composition


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Aluminum (Al), % 0.5 to 3.0
0
Copper (Cu), % 54 to 65.5
88 to 92.5
Iron (Fe), % 0 to 1.0
0
Lead (Pb), % 0 to 2.0
0 to 0.5
Manganese (Mn), % 11 to 15
0
Nickel (Ni), % 4.0 to 6.0
0
Silicon (Si), % 0
3.5 to 5.5
Tin (Sn), % 0 to 1.0
0
Zinc (Zn), % 19 to 25
4.0 to 7.0
Residuals, % 0 to 0.3
0 to 0.5