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Grade FDSiCrV Steel vs. 6070 Aluminum

Grade FDSiCrV steel belongs to the iron alloys classification, while 6070 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 6070 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 2100
370 to 380

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 420
160
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 47
160
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
41
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
140

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
8.3
Embodied Energy, MJ/kg 26
150
Embodied Water, L/kg 50
1170

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 75
38
Strength to Weight: Bending, points 47
42 to 43
Thermal Diffusivity, mm2/s 13
65
Thermal Shock Resistance, points 63
16 to 17

Alloy Composition

Aluminum (Al), % 0
94.6 to 98
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
0.15 to 0.4
Iron (Fe), % 96 to 97.8
0 to 0.5
Magnesium (Mg), % 0
0.5 to 1.2
Manganese (Mn), % 0.4 to 0.9
0.4 to 1.0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.7
1.0 to 1.7
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.15
Vanadium (V), % 0.1 to 0.25
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15