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C97600 Dairy Metal vs. C87500 Brass

Both C97600 dairy metal and C87500 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 71% of their average alloy composition in common.

For each property being compared, the top bar is C97600 dairy metal and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 11
18
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 46
42
Tensile Strength: Ultimate (UTS), MPa 310
460
Tensile Strength: Yield (Proof), MPa 140
190

Thermal Properties

Latent Heat of Fusion, J/g 210
260
Maximum Temperature: Mechanical, °C 210
170
Melting Completion (Liquidus), °C 1140
920
Melting Onset (Solidus), °C 1110
820
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 22
28
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 5.0
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 5.1
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
27
Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 4.6
2.7
Embodied Energy, MJ/kg 69
44
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
67
Resilience: Unit (Modulus of Resilience), kJ/m3 85
160
Stiffness to Weight: Axial, points 7.7
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 9.8
16
Strength to Weight: Bending, points 12
16
Thermal Diffusivity, mm2/s 6.5
8.3
Thermal Shock Resistance, points 11
17

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.5
Antimony (Sb), % 0 to 0.25
0
Copper (Cu), % 63 to 67
79 to 85
Iron (Fe), % 0 to 1.5
0
Lead (Pb), % 3.0 to 5.0
0 to 0.5
Nickel (Ni), % 19 to 21.5
0
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 0.15
3.0 to 5.0
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 3.5 to 4.0
0
Zinc (Zn), % 3.0 to 9.0
12 to 16
Residuals, % 0 to 0.3
0 to 0.5