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357.0 Aluminum vs. SAE-AISI 9254 Steel

357.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 9254 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 9254 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95
200
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.4
20
Fatigue Strength, MPa 76
280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 200
410
Tensile Strength: Ultimate (UTS), MPa 350
660
Tensile Strength: Yield (Proof), MPa 300
410

Thermal Properties

Latent Heat of Fusion, J/g 500
270
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 560
1400
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 150
46
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.2
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 8.0
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1110
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
110
Resilience: Unit (Modulus of Resilience), kJ/m3 620
450
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 38
24
Strength to Weight: Bending, points 43
22
Thermal Diffusivity, mm2/s 64
12
Thermal Shock Resistance, points 17
20

Alloy Composition

Aluminum (Al), % 91.3 to 93.1
0
Carbon (C), % 0
0.51 to 0.59
Chromium (Cr), % 0
0.6 to 0.8
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.15
96.1 to 97.1
Magnesium (Mg), % 0.45 to 0.6
0
Manganese (Mn), % 0 to 0.030
0.6 to 0.8
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 6.5 to 7.5
1.2 to 1.6
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