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Grade FDSiCr Steel vs. C355.0 Aluminum

Grade FDSiCr steel belongs to the iron alloys classification, while C355.0 aluminum belongs to the aluminum alloys. There are 25 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 grade FDSiCr steel and the bottom bar is C355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 580
86 to 90
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 1930
290 to 310

Thermal Properties

Latent Heat of Fusion, J/g 270
470
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1440
620
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 48
150
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
39
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
130

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 1.5
8.0
Embodied Energy, MJ/kg 20
150
Embodied Water, L/kg 48
1120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 69
30 to 32
Strength to Weight: Bending, points 44
36 to 37
Thermal Diffusivity, mm2/s 13
60
Thermal Shock Resistance, points 58
13 to 14

Alloy Composition

Aluminum (Al), % 0
91.7 to 94.1
Carbon (C), % 0.5 to 0.6
0
Chromium (Cr), % 0.5 to 0.8
0
Copper (Cu), % 0 to 0.12
1.0 to 1.5
Iron (Fe), % 96.5 to 97.8
0 to 0.2
Magnesium (Mg), % 0
0.4 to 0.6
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
4.5 to 5.5
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 0.15