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SAE-AISI H42 Steel vs. 1080 Aluminum

SAE-AISI H42 steel belongs to the iron alloys classification, while 1080 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 1080 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 77
26
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
72 to 130

Thermal Properties

Latent Heat of Fusion, J/g 260
400
Melting Completion (Liquidus), °C 1620
640
Melting Onset (Solidus), °C 1570
640
Specific Heat Capacity, J/kg-K 440
900
Thermal Conductivity, W/m-K 24
230
Thermal Expansion, µm/m-K 12
23

Otherwise Unclassified Properties

Base Metal Price, % relative 24
9.5
Density, g/cm3 8.4
2.7
Embodied Carbon, kg CO2/kg material 8.8
8.3
Embodied Energy, MJ/kg 130
160
Embodied Water, L/kg 98
1200

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 23 to 65
7.4 to 14
Strength to Weight: Bending, points 21 to 42
14 to 22
Thermal Diffusivity, mm2/s 6.5
94
Thermal Shock Resistance, points 20 to 57
3.2 to 6.0

Alloy Composition

Aluminum (Al), % 0
99.8 to 100
Carbon (C), % 0.55 to 0.7
0
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 79.3 to 83.8
0 to 0.15
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 0.15 to 0.4
0 to 0.020
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 0.15
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0 to 0.050
Zinc (Zn), % 0
0 to 0.030
Residuals, % 0
0 to 0.020

Comparable Variants