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852.0 Aluminum vs. SAE-AISI 4118 Steel

852.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 4118 steel belongs to the iron alloys. There are 31 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 852.0 aluminum and the bottom bar is SAE-AISI 4118 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 64
150
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.4
23
Fatigue Strength, MPa 73
230
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 130
320
Tensile Strength: Ultimate (UTS), MPa 200
500
Tensile Strength: Yield (Proof), MPa 150
320

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 190
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 210
1420
Specific Heat Capacity, J/kg-K 840
470
Thermal Conductivity, W/m-K 180
46
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.3
Density, g/cm3 3.2
7.8
Embodied Carbon, kg CO2/kg material 8.5
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 1150
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.2
100
Resilience: Unit (Modulus of Resilience), kJ/m3 160
280
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 43
24
Strength to Weight: Axial, points 17
18
Strength to Weight: Bending, points 24
18
Thermal Diffusivity, mm2/s 65
13
Thermal Shock Resistance, points 8.7
15

Alloy Composition

Aluminum (Al), % 86.6 to 91.3
0
Carbon (C), % 0
0.18 to 0.23
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 1.7 to 2.3
0
Iron (Fe), % 0 to 0.7
97.5 to 98.4
Magnesium (Mg), % 0.6 to 0.9
0
Manganese (Mn), % 0 to 0.1
0.7 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0.9 to 1.5
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Residuals, % 0 to 0.3
0