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3103 Aluminum vs. C99700 Brass

3103 aluminum belongs to the aluminum alloys classification, while C99700 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 3103 aluminum and the bottom bar is C99700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 1.1 to 28
25
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
46
Tensile Strength: Ultimate (UTS), MPa 100 to 220
380
Tensile Strength: Yield (Proof), MPa 39 to 200
170

Thermal Properties

Latent Heat of Fusion, J/g 400
200
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 660
900
Melting Onset (Solidus), °C 640
880
Specific Heat Capacity, J/kg-K 900
410
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
25
Density, g/cm3 2.8
8.1
Embodied Carbon, kg CO2/kg material 8.2
3.3
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.4 to 24
78
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 280
120
Stiffness to Weight: Axial, points 14
8.3
Stiffness to Weight: Bending, points 50
20
Strength to Weight: Axial, points 10 to 22
13
Strength to Weight: Bending, points 18 to 30
14
Thermal Shock Resistance, points 4.6 to 9.9
11

Alloy Composition

Aluminum (Al), % 96.3 to 99.1
0.5 to 3.0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
54 to 65.5
Iron (Fe), % 0 to 0.7
0 to 1.0
Lead (Pb), % 0
0 to 2.0
Magnesium (Mg), % 0 to 0.3
0
Manganese (Mn), % 0.9 to 1.5
11 to 15
Nickel (Ni), % 0
4.0 to 6.0
Silicon (Si), % 0 to 0.5
0
Tin (Sn), % 0
0 to 1.0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
19 to 25
Zirconium (Zr), % 0 to 0.1
0
Residuals, % 0
0 to 0.3