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Grade FDSiCrV Steel vs. 7003 Aluminum

Grade FDSiCrV steel belongs to the iron alloys classification, while 7003 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 7003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 2100
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Maximum Temperature: Mechanical, °C 420
200
Melting Completion (Liquidus), °C 1440
630
Melting Onset (Solidus), °C 1400
510
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 47
150
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
36
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
2.9
Embodied Carbon, kg CO2/kg material 1.9
8.1
Embodied Energy, MJ/kg 26
150
Embodied Water, L/kg 50
1140

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 75
33 to 37
Strength to Weight: Bending, points 47
37 to 40
Thermal Diffusivity, mm2/s 13
59
Thermal Shock Resistance, points 63
15 to 17

Alloy Composition

Aluminum (Al), % 0
90.6 to 94.5
Carbon (C), % 0.5 to 0.7
0
Chromium (Cr), % 0.5 to 1.0
0 to 0.2
Copper (Cu), % 0 to 0.12
0 to 0.2
Iron (Fe), % 96 to 97.8
0 to 0.35
Magnesium (Mg), % 0
0.5 to 1.0
Manganese (Mn), % 0.4 to 0.9
0 to 0.3
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.7
0 to 0.3
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.1 to 0.25
0
Zinc (Zn), % 0
5.0 to 6.5
Zirconium (Zr), % 0
0.050 to 0.25
Residuals, % 0
0 to 0.15