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A444.0 Aluminum vs. EN 1.7117 Steel

A444.0 aluminum belongs to the aluminum alloys classification, while EN 1.7117 steel belongs to the iron alloys. There are 24 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 A444.0 aluminum and the bottom bar is EN 1.7117 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Tensile Strength: Ultimate (UTS), MPa 160
660 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 500
270
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 630
1440
Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
43
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.6
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 7.9
1.5
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 1110
51

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 17
24 to 69
Strength to Weight: Bending, points 25
22 to 44
Thermal Diffusivity, mm2/s 68
12
Thermal Shock Resistance, points 7.3
20 to 58

Alloy Composition

Aluminum (Al), % 91.6 to 93.5
0
Carbon (C), % 0
0.49 to 0.56
Chromium (Cr), % 0
0.7 to 1.0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.2
95.2 to 96.4
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.1
0.7 to 1.0
Nickel (Ni), % 0
0.5 to 0.7
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 6.5 to 7.5
1.2 to 1.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0