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ACI-ASTM CF20 Steel vs. 711.0 Aluminum

ACI-ASTM CF20 steel belongs to the iron alloys classification, while 711.0 aluminum belongs to the aluminum alloys. There are 30 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 ACI-ASTM CF20 steel and the bottom bar is 711.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
70
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 50
7.8
Fatigue Strength, MPa 240
100
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 530
220
Tensile Strength: Yield (Proof), MPa 250
140

Thermal Properties

Latent Heat of Fusion, J/g 300
380
Maximum Temperature: Mechanical, °C 970
170
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1410
610
Specific Heat Capacity, J/kg-K 480
860
Thermal Conductivity, W/m-K 16
160
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
120

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 3.1
7.9
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 150
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
15
Resilience: Unit (Modulus of Resilience), kJ/m3 160
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 4.3
61
Thermal Shock Resistance, points 11
9.3

Alloy Composition

Aluminum (Al), % 0
89.8 to 92.7
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
0.35 to 0.65
Iron (Fe), % 64.2 to 74
0.7 to 1.4
Magnesium (Mg), % 0
0.25 to 0.45
Manganese (Mn), % 0 to 1.5
0 to 0.050
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.3
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
6.0 to 7.0
Residuals, % 0
0 to 0.15