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2011 Aluminum vs. Grade TDSiCr Steel

2011 aluminum belongs to the aluminum alloys classification, while grade TDSiCr steel belongs to the iron 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 2011 aluminum and the bottom bar is grade TDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
80
Tensile Strength: Ultimate (UTS), MPa 310 to 420
1950

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 190
410
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 540
1400
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 140 to 170
46
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 45
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 100 to 130
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.2
Density, g/cm3 3.1
7.7
Embodied Carbon, kg CO2/kg material 7.9
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1150
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 44
25
Strength to Weight: Axial, points 27 to 37
70
Strength to Weight: Bending, points 32 to 40
45
Thermal Diffusivity, mm2/s 51 to 64
12
Thermal Shock Resistance, points 14 to 19
58

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
0
Bismuth (Bi), % 0.2 to 0.6
0
Carbon (C), % 0
0.5 to 0.6
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 5.0 to 6.0
0 to 0.1
Iron (Fe), % 0 to 0.7
96.6 to 97.8
Lead (Pb), % 0.2 to 0.6
0
Manganese (Mn), % 0
0.5 to 0.9
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.4
1.2 to 1.6
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0