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C87800 Brass vs. C68100 Brass

Both C87800 brass and C68100 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 73% 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 C87800 brass and the bottom bar is C68100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 25
29
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 590
380
Tensile Strength: Yield (Proof), MPa 350
140

Thermal Properties

Latent Heat of Fusion, J/g 260
170
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 920
890
Melting Onset (Solidus), °C 820
870
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 28
98
Thermal Expansion, µm/m-K 18
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
24
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
27

Otherwise Unclassified Properties

Base Metal Price, % relative 27
23
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 44
47
Embodied Water, L/kg 300
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
86
Resilience: Unit (Modulus of Resilience), kJ/m3 540
94
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 20
13
Strength to Weight: Bending, points 19
15
Thermal Diffusivity, mm2/s 8.3
32
Thermal Shock Resistance, points 21
13

Alloy Composition

Aluminum (Al), % 0 to 0.15
0 to 0.010
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Copper (Cu), % 80 to 84.2
56 to 60
Iron (Fe), % 0 to 0.15
0.25 to 1.3
Lead (Pb), % 0 to 0.15
0 to 0.050
Magnesium (Mg), % 0 to 0.010
0
Manganese (Mn), % 0 to 0.15
0.010 to 0.5
Nickel (Ni), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 3.8 to 4.2
0.040 to 0.15
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0 to 0.25
0.75 to 1.1
Zinc (Zn), % 12 to 16
36.4 to 43
Residuals, % 0
0 to 0.5