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A535.0 Aluminum vs. SAE-AISI 8640 Steel

A535.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 8640 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 8640 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
190
Elongation at Break, % 9.0
23
Fatigue Strength, MPa 95
270
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
73
Tensile Strength: Ultimate (UTS), MPa 250
570
Tensile Strength: Yield (Proof), MPa 120
380

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 100
39
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 79
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.6
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 9.3
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 1180
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
120
Resilience: Unit (Modulus of Resilience), kJ/m3 120
380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 33
20
Thermal Diffusivity, mm2/s 42
10
Thermal Shock Resistance, points 11
17

Alloy Composition

Aluminum (Al), % 91.4 to 93.4
0
Carbon (C), % 0
0.38 to 0.43
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.2
96.6 to 97.8
Magnesium (Mg), % 6.5 to 7.5
0
Manganese (Mn), % 0.1 to 0.25
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Residuals, % 0 to 0.15
0