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ACI-ASTM CF8 Steel vs. C443.0 Aluminum

ACI-ASTM CF8 steel belongs to the iron alloys classification, while C443.0 aluminum belongs to the aluminum 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 ACI-ASTM CF8 steel and the bottom bar is C443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
65
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 55
9.0
Fatigue Strength, MPa 260
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 540
230
Tensile Strength: Yield (Proof), MPa 260
100

Thermal Properties

Latent Heat of Fusion, J/g 300
470
Maximum Temperature: Mechanical, °C 980
170
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1430
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
140
Thermal Expansion, µm/m-K 15
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
37
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
120

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
7.9
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 150
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
17
Resilience: Unit (Modulus of Resilience), kJ/m3 160
70
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
31
Thermal Diffusivity, mm2/s 4.3
58
Thermal Shock Resistance, points 13
10

Alloy Composition

Aluminum (Al), % 0
89.6 to 95.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 63.8 to 74
0 to 2.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.5
0 to 0.35
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 11
0 to 0.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
4.5 to 6.0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.25