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ACI-ASTM CN3MN Steel vs. 2017 Aluminum

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while 2017 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 CN3MN steel and the bottom bar is 2017 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
71
Elongation at Break, % 39
12 to 18
Fatigue Strength, MPa 250
90 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
27
Tensile Strength: Ultimate (UTS), MPa 620
190 to 430
Tensile Strength: Yield (Proof), MPa 300
76 to 260

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
510
Specific Heat Capacity, J/kg-K 460
880
Thermal Conductivity, W/m-K 13
150
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
38
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
110

Otherwise Unclassified Properties

Base Metal Price, % relative 33
10
Density, g/cm3 8.1
3.0
Embodied Carbon, kg CO2/kg material 6.2
8.0
Embodied Energy, MJ/kg 84
150
Embodied Water, L/kg 200
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
24 to 66
Resilience: Unit (Modulus of Resilience), kJ/m3 210
41 to 470
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 21
17 to 40
Strength to Weight: Bending, points 20
24 to 42
Thermal Diffusivity, mm2/s 3.4
56
Thermal Shock Resistance, points 14
7.9 to 18

Alloy Composition


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Aluminum (Al), % 0
91.6 to 95.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0 to 0.1
Copper (Cu), % 0 to 0.75
3.5 to 4.5
Iron (Fe), % 41.4 to 50.3
0 to 0.7
Magnesium (Mg), % 0
0.4 to 0.8
Manganese (Mn), % 0 to 2.0
0.4 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
0
Nitrogen (N), % 0.18 to 0.26
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.2 to 0.8
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15