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358.0 Aluminum vs. ACI-ASTM CF8 Steel

358.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CF8 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 358.0 aluminum and the bottom bar is ACI-ASTM CF8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 3.5 to 6.0
55
Fatigue Strength, MPa 100 to 110
260
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 350 to 370
540
Tensile Strength: Yield (Proof), MPa 290 to 320
260

Thermal Properties

Latent Heat of Fusion, J/g 520
300
Maximum Temperature: Mechanical, °C 170
980
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 560
1430
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 150
16
Thermal Expansion, µm/m-K 21
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
16
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.7
3.1
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 1090
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 20
240
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 710
160
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 37 to 39
19
Strength to Weight: Bending, points 42 to 44
19
Thermal Diffusivity, mm2/s 63
4.3
Thermal Shock Resistance, points 16 to 17
13

Alloy Composition

Aluminum (Al), % 89.1 to 91.8
0
Beryllium (Be), % 0.1 to 0.3
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.2
18 to 21
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.3
63.8 to 74
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.2
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
8.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 7.6 to 8.6
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0.1 to 0.2
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0