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ACI-ASTM CF8C Steel vs. A380.0 Aluminum

ACI-ASTM CF8C steel belongs to the iron alloys classification, while A380.0 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 CF8C steel and the bottom bar is A380.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
80
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 40
3.3
Fatigue Strength, MPa 220
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 530
290
Tensile Strength: Yield (Proof), MPa 260
160

Thermal Properties

Latent Heat of Fusion, J/g 300
510
Maximum Temperature: Mechanical, °C 980
170
Melting Completion (Liquidus), °C 1420
590
Melting Onset (Solidus), °C 1430
550
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 16
96
Thermal Expansion, µm/m-K 17
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
78

Otherwise Unclassified Properties

Base Metal Price, % relative 19
11
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 3.7
7.5
Embodied Energy, MJ/kg 53
140
Embodied Water, L/kg 150
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
8.3
Resilience: Unit (Modulus of Resilience), kJ/m3 170
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
48
Strength to Weight: Axial, points 19
28
Strength to Weight: Bending, points 19
34
Thermal Diffusivity, mm2/s 4.3
38
Thermal Shock Resistance, points 11
13

Alloy Composition

Aluminum (Al), % 0
80.3 to 89.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 61.8 to 73
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.5
0 to 0.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 9.0 to 12
0 to 0.5
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
7.5 to 9.5
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.35
Zinc (Zn), % 0
0 to 3.0
Residuals, % 0
0 to 0.5