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772.0 Aluminum vs. Grade FDSiCrV Steel

772.0 aluminum belongs to the aluminum alloys classification, while grade FDSiCrV steel belongs to the iron alloys. There are 24 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 772.0 aluminum and the bottom bar is grade FDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 260 to 320
2100

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 180
420
Melting Completion (Liquidus), °C 630
1440
Melting Onset (Solidus), °C 580
1400
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 150
47
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.3
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.0
1.9
Embodied Energy, MJ/kg 150
26
Embodied Water, L/kg 1140
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 25 to 31
75
Strength to Weight: Bending, points 31 to 36
47
Thermal Diffusivity, mm2/s 58
13
Thermal Shock Resistance, points 11 to 14
63

Alloy Composition

Aluminum (Al), % 91.2 to 93.2
0
Carbon (C), % 0
0.5 to 0.7
Chromium (Cr), % 0.060 to 0.2
0.5 to 1.0
Copper (Cu), % 0 to 0.1
0 to 0.12
Iron (Fe), % 0 to 0.15
96 to 97.8
Magnesium (Mg), % 0.6 to 0.8
0
Manganese (Mn), % 0 to 0.1
0.4 to 0.9
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.15
1.2 to 1.7
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0.1 to 0.2
0
Vanadium (V), % 0
0.1 to 0.25
Zinc (Zn), % 6.0 to 7.0
0
Residuals, % 0 to 0.15
0