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SAE-AISI H42 Steel vs. 354.0 Aluminum

SAE-AISI H42 steel belongs to the iron alloys classification, while 354.0 aluminum belongs to the aluminum alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, 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 354.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
360 to 380

Thermal Properties

Latent Heat of Fusion, J/g 260
530
Melting Completion (Liquidus), °C 1620
600
Melting Onset (Solidus), °C 1570
550
Specific Heat Capacity, J/kg-K 440
900
Thermal Conductivity, W/m-K 24
130
Thermal Expansion, µm/m-K 12
21

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
7.8
Embodied Energy, MJ/kg 130
150
Embodied Water, L/kg 98
1070

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
52
Strength to Weight: Axial, points 23 to 65
37 to 39
Strength to Weight: Bending, points 21 to 42
42 to 44
Thermal Diffusivity, mm2/s 6.5
52
Thermal Shock Resistance, points 20 to 57
17 to 18

Alloy Composition

Aluminum (Al), % 0
87.3 to 89.4
Carbon (C), % 0.55 to 0.7
0
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
1.6 to 2.0
Iron (Fe), % 79.3 to 83.8
0 to 0.2
Magnesium (Mg), % 0
0.4 to 0.6
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
8.6 to 9.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15