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851.0 Aluminum vs. SAE-AISI H24 Steel

851.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI H24 steel belongs to the iron alloys. There are 21 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 851.0 aluminum and the bottom bar is SAE-AISI H24 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 130 to 140
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 410
240
Melting Completion (Liquidus), °C 630
1750
Melting Onset (Solidus), °C 360
1700
Specific Heat Capacity, J/kg-K 850
420
Thermal Conductivity, W/m-K 180
27
Thermal Expansion, µm/m-K 23
12

Otherwise Unclassified Properties

Base Metal Price, % relative 14
37
Density, g/cm3 3.1
9.1
Embodied Carbon, kg CO2/kg material 8.4
6.1
Embodied Energy, MJ/kg 160
93
Embodied Water, L/kg 1140
78

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 45
22
Strength to Weight: Axial, points 12 to 13
22 to 61
Strength to Weight: Bending, points 19 to 20
20 to 39
Thermal Diffusivity, mm2/s 69
6.9
Thermal Shock Resistance, points 6.1 to 6.3
22 to 61

Alloy Composition

Aluminum (Al), % 86.6 to 91.5
0
Carbon (C), % 0
0.42 to 0.53
Chromium (Cr), % 0
2.5 to 3.5
Copper (Cu), % 0.7 to 1.3
0 to 0.25
Iron (Fe), % 0 to 0.7
78 to 82.4
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.1
0.15 to 0.4
Nickel (Ni), % 0.3 to 0.7
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 2.0 to 3.0
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6
Residuals, % 0 to 0.3
0