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EN AC-21000 Aluminum vs. Grade FDSiCr Steel

EN AC-21000 aluminum belongs to the aluminum alloys classification, while grade FDSiCr steel belongs to the iron 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 EN AC-21000 aluminum and the bottom bar is grade FDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100
580
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 340
1930

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 670
1440
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 130
48
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.2
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.0
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 46
25
Strength to Weight: Axial, points 32
69
Strength to Weight: Bending, points 36
44
Thermal Diffusivity, mm2/s 49
13
Thermal Shock Resistance, points 15
58

Alloy Composition

Aluminum (Al), % 93.4 to 95.5
0
Carbon (C), % 0
0.5 to 0.6
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 4.2 to 5.0
0 to 0.12
Iron (Fe), % 0 to 0.35
96.5 to 97.8
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.15 to 0.35
0
Manganese (Mn), % 0 to 0.1
0.5 to 0.9
Nickel (Ni), % 0 to 0.050
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
1.2 to 1.6
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.1
0