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357.0 Aluminum vs. SAE-AISI 4150 Steel

357.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 4150 steel belongs to the iron alloys. 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 357.0 aluminum and the bottom bar is SAE-AISI 4150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95
200 to 380
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.4
12 to 20
Fatigue Strength, MPa 76
260 to 780
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 200
410 to 800
Tensile Strength: Ultimate (UTS), MPa 350
660 to 1310
Tensile Strength: Yield (Proof), MPa 300
380 to 1220

Thermal Properties

Latent Heat of Fusion, J/g 500
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 560
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 150
42
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1110
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
82 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 620
380 to 3930
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 38
24 to 47
Strength to Weight: Bending, points 43
22 to 34
Thermal Diffusivity, mm2/s 64
11
Thermal Shock Resistance, points 17
19 to 39

Alloy Composition

Aluminum (Al), % 91.3 to 93.1
0
Carbon (C), % 0
0.48 to 0.53
Chromium (Cr), % 0
0.8 to 1.1
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.15
96.7 to 97.7
Magnesium (Mg), % 0.45 to 0.6
0
Manganese (Mn), % 0 to 0.030
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 6.5 to 7.5
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.15
0