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C87400 Brass vs. C99500 Copper

Both C87400 brass and C99500 copper 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 (2, in this case) are not shown.

For each property being compared, the top bar is C87400 brass and the bottom bar is C99500 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 21
13
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 41
45
Tensile Strength: Ultimate (UTS), MPa 390
540
Tensile Strength: Yield (Proof), MPa 160
310

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 170
210
Melting Completion (Liquidus), °C 920
1090
Melting Onset (Solidus), °C 820
1040
Specific Heat Capacity, J/kg-K 400
400
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
10
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
10

Otherwise Unclassified Properties

Base Metal Price, % relative 27
30
Density, g/cm3 8.3
8.7
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 44
47
Embodied Water, L/kg 310
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
63
Resilience: Unit (Modulus of Resilience), kJ/m3 120
410
Stiffness to Weight: Axial, points 7.4
7.7
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 13
17
Strength to Weight: Bending, points 14
17
Thermal Shock Resistance, points 14
19

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0.5 to 2.0
Copper (Cu), % 79 to 85.5
82.5 to 92
Iron (Fe), % 0
3.0 to 5.0
Lead (Pb), % 0 to 1.0
0 to 0.25
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
3.5 to 5.5
Silicon (Si), % 2.5 to 4.0
0.5 to 2.0
Zinc (Zn), % 12 to 16
0.5 to 2.0
Residuals, % 0 to 0.8
0 to 0.3