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242.0 Aluminum vs. SAE-AISI 9254 Steel

242.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 9254 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 242.0 aluminum and the bottom bar is SAE-AISI 9254 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70 to 110
200
Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 0.5 to 1.5
20
Fatigue Strength, MPa 55 to 110
280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Shear Strength, MPa 150 to 240
410
Tensile Strength: Ultimate (UTS), MPa 180 to 290
660
Tensile Strength: Yield (Proof), MPa 120 to 220
410

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 210
410
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 530
1400
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 130 to 170
46
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 44
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 96 to 130
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.2
Density, g/cm3 3.1
7.7
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1130
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.3 to 3.4
110
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 340
450
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 16 to 26
24
Strength to Weight: Bending, points 23 to 32
22
Thermal Diffusivity, mm2/s 50 to 62
12
Thermal Shock Resistance, points 8.0 to 13
20

Alloy Composition

Aluminum (Al), % 88.4 to 93.6
0
Carbon (C), % 0
0.51 to 0.59
Chromium (Cr), % 0 to 0.25
0.6 to 0.8
Copper (Cu), % 3.5 to 4.5
0
Iron (Fe), % 0 to 1.0
96.1 to 97.1
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.35
0.6 to 0.8
Nickel (Ni), % 1.7 to 2.3
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.7
1.2 to 1.6
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0