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333.0 Aluminum vs. ACI-ASTM CF20 Steel

333.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CF20 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 333.0 aluminum and the bottom bar is ACI-ASTM CF20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90 to 110
160
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 1.0 to 2.0
50
Fatigue Strength, MPa 83 to 100
240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
77
Tensile Strength: Ultimate (UTS), MPa 230 to 280
530
Tensile Strength: Yield (Proof), MPa 130 to 210
250

Thermal Properties

Latent Heat of Fusion, J/g 520
300
Maximum Temperature: Mechanical, °C 170
970
Melting Completion (Liquidus), °C 590
1420
Melting Onset (Solidus), °C 530
1410
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 100 to 140
16
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26 to 35
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 83 to 110
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
16
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 7.6
3.1
Embodied Energy, MJ/kg 140
44
Embodied Water, L/kg 1040
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.1 to 4.6
220
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 290
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 22 to 27
19
Strength to Weight: Bending, points 29 to 34
19
Thermal Diffusivity, mm2/s 42 to 57
4.3
Thermal Shock Resistance, points 11 to 13
11

Alloy Composition

Aluminum (Al), % 81.8 to 89
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
18 to 21
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 0 to 1.0
64.2 to 74
Magnesium (Mg), % 0.050 to 0.5
0
Manganese (Mn), % 0 to 0.5
0 to 1.5
Nickel (Ni), % 0 to 0.5
8.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 8.0 to 10
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0