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SAE-AISI H42 Steel vs. 8090 Aluminum

SAE-AISI H42 steel belongs to the iron alloys classification, while 8090 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 H42 steel and the bottom bar is 8090 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
67
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 77
25
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
340 to 490

Thermal Properties

Latent Heat of Fusion, J/g 260
400
Melting Completion (Liquidus), °C 1620
660
Melting Onset (Solidus), °C 1570
600
Specific Heat Capacity, J/kg-K 440
960
Thermal Conductivity, W/m-K 24
95 to 160
Thermal Expansion, µm/m-K 12
24

Otherwise Unclassified Properties

Base Metal Price, % relative 24
18
Density, g/cm3 8.4
2.7
Embodied Carbon, kg CO2/kg material 8.8
8.6
Embodied Energy, MJ/kg 130
170
Embodied Water, L/kg 98
1160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 23 to 65
34 to 49
Strength to Weight: Bending, points 21 to 42
39 to 50
Thermal Diffusivity, mm2/s 6.5
36 to 60
Thermal Shock Resistance, points 20 to 57
15 to 22

Alloy Composition

Aluminum (Al), % 0
93 to 98.4
Carbon (C), % 0.55 to 0.7
0
Chromium (Cr), % 3.8 to 4.5
0 to 0.1
Copper (Cu), % 0 to 0.25
1.0 to 1.6
Iron (Fe), % 79.3 to 83.8
0 to 0.3
Lithium (Li), % 0
2.2 to 2.7
Magnesium (Mg), % 0
0.6 to 1.3
Manganese (Mn), % 0.15 to 0.4
0 to 0.1
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.040 to 0.16
Residuals, % 0
0 to 0.15