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Grade FDSiCrV Steel vs. 4004 Aluminum

Grade FDSiCrV steel belongs to the iron alloys classification, while 4004 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 4004 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 80
27
Tensile Strength: Ultimate (UTS), MPa 2100
110

Thermal Properties

Latent Heat of Fusion, J/g 270
540
Maximum Temperature: Mechanical, °C 420
160
Melting Completion (Liquidus), °C 1440
600
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 47
130
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
33
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 1.9
8.0
Embodied Energy, MJ/kg 26
150
Embodied Water, L/kg 50
1070

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
54
Strength to Weight: Axial, points 75
12
Strength to Weight: Bending, points 47
20
Thermal Diffusivity, mm2/s 13
58
Thermal Shock Resistance, points 63
5.1

Alloy Composition

Aluminum (Al), % 0
86 to 90
Carbon (C), % 0.5 to 0.7
0
Chromium (Cr), % 0.5 to 1.0
0
Copper (Cu), % 0 to 0.12
0 to 0.25
Iron (Fe), % 96 to 97.8
0 to 0.8
Magnesium (Mg), % 0
1.0 to 2.0
Manganese (Mn), % 0.4 to 0.9
0 to 0.1
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.7
9.0 to 10.5
Sulfur (S), % 0 to 0.025
0
Vanadium (V), % 0.1 to 0.25
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15