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1050 Aluminum vs. SAE-AISI A7 Steel

1050 aluminum belongs to the aluminum alloys classification, while SAE-AISI A7 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 1050 aluminum and the bottom bar is SAE-AISI A7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Tensile Strength: Ultimate (UTS), MPa 76 to 140
800 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 650
1430
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
37
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.3
13
Embodied Energy, MJ/kg 160
200
Embodied Water, L/kg 1200
100

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 7.8 to 14
29 to 77
Strength to Weight: Bending, points 15 to 22
25 to 48
Thermal Diffusivity, mm2/s 94
10
Thermal Shock Resistance, points 3.4 to 6.2
27 to 72

Alloy Composition

Aluminum (Al), % 99.5 to 100
0
Carbon (C), % 0
2.0 to 2.9
Chromium (Cr), % 0
5.0 to 5.8
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0 to 0.4
81.4 to 87.7
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.030
0
Tungsten (W), % 0
0.5 to 1.5
Vanadium (V), % 0 to 0.050
3.9 to 5.2
Zinc (Zn), % 0 to 0.050
0

Comparable Variants