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SAE-AISI M36 Steel vs. 7050 Aluminum

SAE-AISI M36 steel belongs to the iron alloys classification, while 7050 aluminum belongs to the aluminum alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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 M36 steel and the bottom bar is 7050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 78
26
Tensile Strength: Ultimate (UTS), MPa 810 to 2190
490 to 570

Thermal Properties

Latent Heat of Fusion, J/g 260
370
Melting Completion (Liquidus), °C 1600
630
Melting Onset (Solidus), °C 1550
490
Specific Heat Capacity, J/kg-K 440
860
Thermal Conductivity, W/m-K 19
140
Thermal Expansion, µm/m-K 12
24

Otherwise Unclassified Properties

Base Metal Price, % relative 38
10
Density, g/cm3 8.4
3.1
Embodied Carbon, kg CO2/kg material 9.5
8.2
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 140
1120

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
45
Strength to Weight: Axial, points 27 to 72
45 to 51
Strength to Weight: Bending, points 23 to 44
45 to 50
Thermal Diffusivity, mm2/s 5.1
54
Thermal Shock Resistance, points 25 to 68
21 to 25

Alloy Composition

Aluminum (Al), % 0
87.3 to 92.1
Carbon (C), % 0.8 to 0.9
0
Chromium (Cr), % 3.8 to 4.5
0 to 0.040
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
2.0 to 2.6
Iron (Fe), % 70.1 to 75.5
0 to 0.15
Magnesium (Mg), % 0
1.9 to 2.6
Manganese (Mn), % 0.15 to 0.4
0 to 0.1
Molybdenum (Mo), % 4.6 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 0.12
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.060
Tungsten (W), % 5.5 to 6.5
0
Vanadium (V), % 1.8 to 2.3
0
Zinc (Zn), % 0
5.7 to 6.7
Zirconium (Zr), % 0
0.080 to 0.15
Residuals, % 0
0 to 0.15