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296.0 Aluminum vs. SAE-AISI 4161 Steel

296.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 4161 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 4161 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75 to 90
200
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 3.2 to 7.1
20
Fatigue Strength, MPa 47 to 70
290
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 260 to 270
680
Tensile Strength: Yield (Proof), MPa 120 to 180
410

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
1410
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 130 to 150
43
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 37
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 99 to 110
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.5
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 7.8
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1110
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.6 to 15
120
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 220
460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 24 to 25
24
Strength to Weight: Bending, points 30 to 31
22
Thermal Diffusivity, mm2/s 51 to 56
12
Thermal Shock Resistance, points 12
22

Alloy Composition

Aluminum (Al), % 89 to 94
0
Carbon (C), % 0
0.56 to 0.64
Chromium (Cr), % 0
0.7 to 0.9
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 1.2
96.7 to 97.6
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0.75 to 1.0
Molybdenum (Mo), % 0
0.25 to 0.35
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