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SAE-AISI M4 Steel vs. 1050A Aluminum

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

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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

Comparable Variants