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C37700 Brass vs. C87500 Brass

Both C37700 brass and C87500 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 74% of their average alloy composition in common. There are 28 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 C37700 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, % 40
18
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 39
42
Tensile Strength: Ultimate (UTS), MPa 400
460
Tensile Strength: Yield (Proof), MPa 160
190

Thermal Properties

Latent Heat of Fusion, J/g 170
260
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 890
920
Melting Onset (Solidus), °C 880
820
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 120
28
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 30
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 23
27
Density, g/cm3 8.1
8.3
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 45
44
Embodied Water, L/kg 320
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
67
Resilience: Unit (Modulus of Resilience), kJ/m3 120
160
Stiffness to Weight: Axial, points 7.1
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 14
16
Strength to Weight: Bending, points 15
16
Thermal Diffusivity, mm2/s 39
8.3
Thermal Shock Resistance, points 13
17

Alloy Composition


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Aluminum (Al), % 0
0 to 0.5
Copper (Cu), % 58 to 61
79 to 85
Iron (Fe), % 0 to 0.3
0
Lead (Pb), % 1.5 to 2.5
0 to 0.5
Silicon (Si), % 0
3.0 to 5.0
Zinc (Zn), % 35.7 to 40.5
12 to 16
Residuals, % 0 to 0.5
0 to 0.5