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Grade FDSiCr Steel vs. 1080A Aluminum

Grade FDSiCr steel belongs to the iron alloys classification, while 1080A 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 1080A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 580
18 to 40
Elastic (Young's, Tensile) Modulus, GPa 190
68
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 1930
74 to 140

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 48
230
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
62
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
200

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
8.3
Embodied Energy, MJ/kg 20
160
Embodied Water, L/kg 48
1200

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 69
7.6 to 15
Strength to Weight: Bending, points 44
14 to 22
Thermal Diffusivity, mm2/s 13
94
Thermal Shock Resistance, points 58
3.3 to 6.4

Alloy Composition

Aluminum (Al), % 0
99.8 to 100
Carbon (C), % 0.5 to 0.6
0
Chromium (Cr), % 0.5 to 0.8
0
Copper (Cu), % 0 to 0.12
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 96.5 to 97.8
0 to 0.15
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 0.5 to 0.9
0 to 0.020
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.2 to 1.6
0 to 0.15
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.020
Zinc (Zn), % 0
0 to 0.060