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EN AC-45400 Aluminum vs. SAE-AISI H42 Steel

EN AC-45400 aluminum belongs to the aluminum alloys classification, while SAE-AISI H42 steel belongs to the iron 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 EN AC-45400 aluminum and the bottom bar is SAE-AISI H42 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 260
700 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 470
260
Melting Completion (Liquidus), °C 630
1620
Melting Onset (Solidus), °C 560
1570
Specific Heat Capacity, J/kg-K 880
440
Thermal Conductivity, W/m-K 140
24
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 2.8
8.4
Embodied Carbon, kg CO2/kg material 7.8
8.8
Embodied Energy, MJ/kg 150
130
Embodied Water, L/kg 1100
98

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
23
Strength to Weight: Axial, points 25
23 to 65
Strength to Weight: Bending, points 32
21 to 42
Thermal Diffusivity, mm2/s 54
6.5
Thermal Shock Resistance, points 12
20 to 57

Alloy Composition

Aluminum (Al), % 88.4 to 92.9
0
Carbon (C), % 0
0.55 to 0.7
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 2.6 to 3.6
0 to 0.25
Iron (Fe), % 0 to 0.6
79.3 to 83.8
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.55
0.15 to 0.4
Molybdenum (Mo), % 0
4.5 to 5.5
Nickel (Ni), % 0 to 0.1
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 4.5 to 6.0
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0