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5049 Aluminum vs. ACI-ASTM CD3MWCuN Steel

5049 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CD3MWCuN steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 5049 aluminum and the bottom bar is ACI-ASTM CD3MWCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 2.0 to 18
29
Fatigue Strength, MPa 79 to 130
370
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 210 to 330
790
Tensile Strength: Yield (Proof), MPa 91 to 280
500

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 620
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
16
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
22
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.5
4.2
Embodied Energy, MJ/kg 150
58
Embodied Water, L/kg 1180
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.0 to 31
200
Resilience: Unit (Modulus of Resilience), kJ/m3 59 to 570
620
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 22 to 34
28
Strength to Weight: Bending, points 29 to 39
24
Thermal Diffusivity, mm2/s 56
4.2
Thermal Shock Resistance, points 9.3 to 15
22

Alloy Composition

Aluminum (Al), % 94.7 to 97.9
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.3
24 to 26
Copper (Cu), % 0 to 0.1
0.5 to 1.0
Iron (Fe), % 0 to 0.5
56.6 to 65.3
Magnesium (Mg), % 1.6 to 2.5
0
Manganese (Mn), % 0.5 to 1.1
0 to 1.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
6.5 to 8.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
0.5 to 1.0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0