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C85400 Brass vs. C87500 Brass

Both C85400 brass and C87500 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C85400 brass and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 23
18
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 220
460
Tensile Strength: Yield (Proof), MPa 85
190

Thermal Properties

Latent Heat of Fusion, J/g 180
260
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 940
920
Melting Onset (Solidus), °C 940
820
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 89
28
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 22
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
27
Density, g/cm3 8.3
8.3
Embodied Carbon, kg CO2/kg material 2.8
2.7
Embodied Energy, MJ/kg 46
44
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
67
Resilience: Unit (Modulus of Resilience), kJ/m3 35
160
Stiffness to Weight: Axial, points 7.0
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 7.5
16
Strength to Weight: Bending, points 9.9
16
Thermal Diffusivity, mm2/s 28
8.3
Thermal Shock Resistance, points 7.6
17

Alloy Composition

Aluminum (Al), % 0 to 0.35
0 to 0.5
Copper (Cu), % 65 to 70
79 to 85
Iron (Fe), % 0 to 0.7
0
Lead (Pb), % 1.5 to 3.8
0 to 0.5
Nickel (Ni), % 0 to 1.0
0
Silicon (Si), % 0 to 0.050
3.0 to 5.0
Tin (Sn), % 0.5 to 1.5
0
Zinc (Zn), % 24 to 32
12 to 16
Residuals, % 0
0 to 0.5