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A535.0 Aluminum vs. SAE-AISI H25 Steel

A535.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI H25 steel belongs to the iron 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 A535.0 aluminum and the bottom bar is SAE-AISI H25 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
79
Tensile Strength: Ultimate (UTS), MPa 250
710 to 1620

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Melting Completion (Liquidus), °C 620
1750
Melting Onset (Solidus), °C 550
1700
Specific Heat Capacity, J/kg-K 910
420
Thermal Conductivity, W/m-K 100
26
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
38
Density, g/cm3 2.6
9.1
Embodied Carbon, kg CO2/kg material 9.3
6.2
Embodied Energy, MJ/kg 160
93
Embodied Water, L/kg 1180
83

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 51
22
Strength to Weight: Axial, points 26
22 to 50
Strength to Weight: Bending, points 33
20 to 34
Thermal Diffusivity, mm2/s 42
6.7
Thermal Shock Resistance, points 11
22 to 49

Alloy Composition

Aluminum (Al), % 91.4 to 93.4
0
Carbon (C), % 0
0.22 to 0.32
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.2
77.2 to 81.3
Magnesium (Mg), % 6.5 to 7.5
0
Manganese (Mn), % 0.1 to 0.25
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6
Residuals, % 0 to 0.15
0