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ACI-ASTM CN3M Steel vs. 5110A Aluminum

ACI-ASTM CN3M steel belongs to the iron alloys classification, while 5110A aluminum belongs to the aluminum alloys. There are 29 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 CN3M steel and the bottom bar is 5110A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 34
4.5 to 28
Fatigue Strength, MPa 150
37 to 77
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 500
100 to 190
Tensile Strength: Yield (Proof), MPa 190
32 to 170

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Maximum Temperature: Mechanical, °C 1100
180
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 13
220
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
57
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
190

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.1
2.7
Embodied Carbon, kg CO2/kg material 5.9
8.3
Embodied Energy, MJ/kg 80
150
Embodied Water, L/kg 200
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
6.8 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 89
7.6 to 200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 17
10 to 19
Strength to Weight: Bending, points 17
18 to 27
Thermal Diffusivity, mm2/s 3.4
91
Thermal Shock Resistance, points 11
4.5 to 8.4

Alloy Composition

Aluminum (Al), % 0
98.5 to 99.8
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 42.4 to 52.5
0 to 0.25
Magnesium (Mg), % 0
0.2 to 0.6
Manganese (Mn), % 0 to 2.0
0 to 0.2
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 23 to 27
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.030
Residuals, % 0
0 to 0.1