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ACI-ASTM CF20 Steel vs. 512.0 Aluminum

ACI-ASTM CF20 steel belongs to the iron alloys classification, while 512.0 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 512.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
50
Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 50
2.0
Fatigue Strength, MPa 240
58
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 530
130
Tensile Strength: Yield (Proof), MPa 250
83

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 970
180
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1410
590
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
150
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
38
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
130

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.1
8.8
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 150
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 160
50
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 19
14
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 4.3
60
Thermal Shock Resistance, points 11
6.1

Alloy Composition

Aluminum (Al), % 0
90.6 to 95.1
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 18 to 21
0 to 0.25
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 64.2 to 74
0 to 0.6
Magnesium (Mg), % 0
3.5 to 4.5
Manganese (Mn), % 0 to 1.5
0 to 0.8
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
1.4 to 2.2
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15