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ACI-ASTM CF8 Steel vs. 520.0 Aluminum

ACI-ASTM CF8 steel belongs to the iron alloys classification, while 520.0 aluminum belongs to the aluminum alloys. There are 30 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 ACI-ASTM CF8 steel and the bottom bar is 520.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
75
Elastic (Young's, Tensile) Modulus, GPa 200
66
Elongation at Break, % 55
14
Fatigue Strength, MPa 260
55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
25
Tensile Strength: Ultimate (UTS), MPa 540
330
Tensile Strength: Yield (Proof), MPa 260
170

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 980
170
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1430
480
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 16
87
Thermal Expansion, µm/m-K 15
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
21
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
72

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 3.1
9.8
Embodied Energy, MJ/kg 44
160
Embodied Water, L/kg 150
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
39
Resilience: Unit (Modulus of Resilience), kJ/m3 160
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 19
35
Strength to Weight: Bending, points 19
41
Thermal Diffusivity, mm2/s 4.3
37
Thermal Shock Resistance, points 13
14

Alloy Composition

Aluminum (Al), % 0
87.9 to 90.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 63.8 to 74
0 to 0.3
Magnesium (Mg), % 0
9.5 to 10.6
Manganese (Mn), % 0 to 1.5
0 to 0.15
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.25
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15