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5251 Aluminum vs. C84800 Brass

5251 aluminum belongs to the aluminum alloys classification, while C84800 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 5251 aluminum and the bottom bar is C84800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
100
Elongation at Break, % 2.0 to 19
18
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 180 to 280
230
Tensile Strength: Yield (Proof), MPa 67 to 250
100

Thermal Properties

Latent Heat of Fusion, J/g 400
180
Maximum Temperature: Mechanical, °C 180
150
Melting Completion (Liquidus), °C 650
950
Melting Onset (Solidus), °C 610
830
Specific Heat Capacity, J/kg-K 900
370
Thermal Conductivity, W/m-K 150
72
Thermal Expansion, µm/m-K 24
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
16
Electrical Conductivity: Equal Weight (Specific), % IACS 120
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
27
Density, g/cm3 2.7
8.6
Embodied Carbon, kg CO2/kg material 8.5
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1180
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
34
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
53
Stiffness to Weight: Axial, points 14
6.6
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 18 to 29
7.3
Strength to Weight: Bending, points 26 to 35
9.6
Thermal Diffusivity, mm2/s 61
23
Thermal Shock Resistance, points 7.9 to 13
8.2

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
75 to 77
Iron (Fe), % 0 to 0.5
0 to 0.4
Lead (Pb), % 0
5.5 to 7.0
Magnesium (Mg), % 1.7 to 2.4
0
Manganese (Mn), % 0.1 to 0.5
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.4
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
13 to 17
Residuals, % 0
0 to 0.7