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C99700 Brass vs. C87800 Brass

Both C99700 brass and C87800 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 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C99700 brass and the bottom bar is C87800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 25
25
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 46
42
Tensile Strength: Ultimate (UTS), MPa 380
590
Tensile Strength: Yield (Proof), MPa 170
350

Thermal Properties

Latent Heat of Fusion, J/g 200
260
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 900
920
Melting Onset (Solidus), °C 880
820
Specific Heat Capacity, J/kg-K 410
410
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
27
Density, g/cm3 8.1
8.3
Embodied Carbon, kg CO2/kg material 3.3
2.7
Embodied Energy, MJ/kg 53
44
Embodied Water, L/kg 320
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
130
Resilience: Unit (Modulus of Resilience), kJ/m3 120
540
Stiffness to Weight: Axial, points 8.3
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 13
20
Strength to Weight: Bending, points 14
19
Thermal Shock Resistance, points 11
21

Alloy Composition


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Aluminum (Al), % 0.5 to 3.0
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Copper (Cu), % 54 to 65.5
80 to 84.2
Iron (Fe), % 0 to 1.0
0 to 0.15
Lead (Pb), % 0 to 2.0
0 to 0.15
Magnesium (Mg), % 0
0 to 0.010
Manganese (Mn), % 11 to 15
0 to 0.15
Nickel (Ni), % 4.0 to 6.0
0 to 0.2
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
3.8 to 4.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 1.0
0 to 0.25
Zinc (Zn), % 19 to 25
12 to 16
Residuals, % 0 to 0.3
0 to 0.5