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Grade FDSiCr Steel vs. 390.0 Aluminum

Grade FDSiCr steel belongs to the iron alloys classification, while 390.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 FDSiCr steel and the bottom bar is 390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 580
120
Elastic (Young's, Tensile) Modulus, GPa 190
75
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 80
28
Tensile Strength: Ultimate (UTS), MPa 1930
280 to 300

Thermal Properties

Latent Heat of Fusion, J/g 270
640
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 48
130
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
24 to 25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
79 to 83

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
11
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 1.5
7.3
Embodied Energy, MJ/kg 20
130
Embodied Water, L/kg 48
950

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 69
28 to 30
Strength to Weight: Bending, points 44
35 to 36
Thermal Diffusivity, mm2/s 13
56
Thermal Shock Resistance, points 58
14 to 15

Alloy Composition

Aluminum (Al), % 0
74.5 to 79.6
Carbon (C), % 0.5 to 0.6
0
Chromium (Cr), % 0.5 to 0.8
0
Copper (Cu), % 0 to 0.12
4.0 to 5.0
Iron (Fe), % 96.5 to 97.8
0 to 1.3
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0.5 to 0.9
0 to 0.1
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.6
16 to 18
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.2