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1050A Aluminum vs. SAE-AISI M4 Steel

1050A aluminum belongs to the aluminum alloys classification, while SAE-AISI M4 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 1050A aluminum and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
76
Tensile Strength: Ultimate (UTS), MPa 68 to 170
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Melting Completion (Liquidus), °C 660
1610
Melting Onset (Solidus), °C 650
1560
Specific Heat Capacity, J/kg-K 900
440
Thermal Conductivity, W/m-K 230
25
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
25
Density, g/cm3 2.7
8.3
Embodied Carbon, kg CO2/kg material 8.2
14
Embodied Energy, MJ/kg 150
210
Embodied Water, L/kg 1200
110

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
23
Strength to Weight: Axial, points 6.9 to 18
26 to 72
Strength to Weight: Bending, points 14 to 25
23 to 45
Thermal Diffusivity, mm2/s 94
6.9
Thermal Shock Resistance, points 3.0 to 7.6
24 to 68

Alloy Composition

Aluminum (Al), % 99.5 to 100
0
Carbon (C), % 0
1.3 to 1.4
Chromium (Cr), % 0
3.8 to 4.8
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0 to 0.4
75.9 to 81.4
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0.15 to 0.4
Molybdenum (Mo), % 0
4.3 to 5.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.25
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Tungsten (W), % 0
5.3 to 6.5
Vanadium (V), % 0
3.8 to 4.5
Zinc (Zn), % 0 to 0.070
0

Comparable Variants