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Grade FDSiCrV Steel vs. 5042 Aluminum

Grade FDSiCrV steel belongs to the iron alloys classification, while 5042 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 grade FDSiCrV steel and the bottom bar is 5042 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 2100
340 to 360

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 47
130
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
33
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
110

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 1.9
8.8
Embodied Energy, MJ/kg 26
150
Embodied Water, L/kg 50
1180

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 75
35 to 37
Strength to Weight: Bending, points 47
40 to 42
Thermal Diffusivity, mm2/s 13
53
Thermal Shock Resistance, points 63
15 to 16

Alloy Composition

Aluminum (Al), % 0
94.2 to 96.8
Carbon (C), % 0.5 to 0.7
0
Chromium (Cr), % 0.5 to 1.0
0 to 0.1
Copper (Cu), % 0 to 0.12
0 to 0.15
Iron (Fe), % 96 to 97.8
0 to 0.35
Magnesium (Mg), % 0
3.0 to 4.0
Manganese (Mn), % 0.4 to 0.9
0.2 to 0.5
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.7
0 to 0.2
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0.1 to 0.25
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15