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5040 Aluminum vs. Grade FDSiCr Steel

5040 aluminum belongs to the aluminum alloys classification, while grade FDSiCr steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 5040 aluminum and the bottom bar is grade FDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 66 to 74
580
Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 240 to 260
1930

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 190
410
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 600
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
48
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.2
Density, g/cm3 2.8
7.7
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1180
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 24 to 26
69
Strength to Weight: Bending, points 31 to 32
44
Thermal Diffusivity, mm2/s 64
13
Thermal Shock Resistance, points 10 to 11
58

Alloy Composition

Aluminum (Al), % 95.2 to 98
0
Carbon (C), % 0
0.5 to 0.6
Chromium (Cr), % 0.1 to 0.3
0.5 to 0.8
Copper (Cu), % 0 to 0.25
0 to 0.12
Iron (Fe), % 0 to 0.7
96.5 to 97.8
Magnesium (Mg), % 1.0 to 1.5
0
Manganese (Mn), % 0.9 to 1.4
0.5 to 0.9
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.3
1.2 to 1.6
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0