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C87400 Brass vs. C87500 Brass

Both C87400 brass and C87500 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is C87400 brass and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
18
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 41
42
Tensile Strength: Ultimate (UTS), MPa 390
460
Tensile Strength: Yield (Proof), MPa 160
190

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 920
920
Melting Onset (Solidus), °C 820
820
Specific Heat Capacity, J/kg-K 400
410
Thermal Conductivity, W/m-K 28
28
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
7.3

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
67
Resilience: Unit (Modulus of Resilience), kJ/m3 120
160
Stiffness to Weight: Axial, points 7.4
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 13
16
Strength to Weight: Bending, points 14
16
Thermal Diffusivity, mm2/s 8.3
8.3
Thermal Shock Resistance, points 14
17

Alloy Composition

Aluminum (Al), % 0 to 0.8
0 to 0.5
Copper (Cu), % 79 to 85.5
79 to 85
Lead (Pb), % 0 to 1.0
0 to 0.5
Silicon (Si), % 2.5 to 4.0
3.0 to 5.0
Zinc (Zn), % 12 to 16
12 to 16
Residuals, % 0
0 to 0.5