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356.0 Aluminum vs. SAE-AISI H25 Steel

356.0 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 (13, 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 356.0 aluminum and the bottom bar is SAE-AISI H25 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
79
Tensile Strength: Ultimate (UTS), MPa 160 to 240
710 to 1620

Thermal Properties

Latent Heat of Fusion, J/g 500
250
Melting Completion (Liquidus), °C 620
1750
Melting Onset (Solidus), °C 570
1700
Specific Heat Capacity, J/kg-K 900
420
Thermal Conductivity, W/m-K 150 to 170
26
Thermal Expansion, µm/m-K 21
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
38
Density, g/cm3 2.6
9.1
Embodied Carbon, kg CO2/kg material 8.0
6.2
Embodied Energy, MJ/kg 150
93
Embodied Water, L/kg 1110
83

Common Calculations

Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 53
22
Strength to Weight: Axial, points 17 to 26
22 to 50
Strength to Weight: Bending, points 25 to 33
20 to 34
Thermal Diffusivity, mm2/s 64 to 71
6.7
Thermal Shock Resistance, points 7.6 to 11
22 to 49

Alloy Composition

Aluminum (Al), % 90.1 to 93.3
0
Carbon (C), % 0
0.22 to 0.32
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 0.6
77.2 to 81.3
Magnesium (Mg), % 0.2 to 0.45
0
Manganese (Mn), % 0 to 0.35
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 6.5 to 7.5
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
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0