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296.0 Aluminum vs. SAE-AISI 5140 Steel

296.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 5140 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 296.0 aluminum and the bottom bar is SAE-AISI 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75 to 90
170 to 290
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 3.2 to 7.1
12 to 29
Fatigue Strength, MPa 47 to 70
220 to 570
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 260 to 270
560 to 970
Tensile Strength: Yield (Proof), MPa 120 to 180
290 to 840

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 130 to 150
45
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 37
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 99 to 110
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.1
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 7.8
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1110
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.6 to 15
76 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 220
220 to 1880
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 24 to 25
20 to 34
Strength to Weight: Bending, points 30 to 31
19 to 28
Thermal Diffusivity, mm2/s 51 to 56
12
Thermal Shock Resistance, points 12
16 to 29

Alloy Composition

Aluminum (Al), % 89 to 94
0
Carbon (C), % 0
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 0.9
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 1.2
97.3 to 98.1
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0.7 to 0.9
Nickel (Ni), % 0 to 0.35
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 2.0 to 3.0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.35
0