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ACI-ASTM CN3MN Steel vs. EN AC-51400 Aluminum

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while EN AC-51400 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 EN AC-51400 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
71
Elastic (Young's, Tensile) Modulus, GPa 210
67
Elongation at Break, % 39
3.4
Fatigue Strength, MPa 250
85
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
25
Tensile Strength: Ultimate (UTS), MPa 620
190
Tensile Strength: Yield (Proof), MPa 300
120

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
600
Specific Heat Capacity, J/kg-K 460
910
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
31
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
110

Otherwise Unclassified Properties

Base Metal Price, % relative 33
9.5
Density, g/cm3 8.1
2.7
Embodied Carbon, kg CO2/kg material 6.2
9.1
Embodied Energy, MJ/kg 84
150
Embodied Water, L/kg 200
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 210
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 20
28
Thermal Diffusivity, mm2/s 3.4
46
Thermal Shock Resistance, points 14
8.6

Alloy Composition


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Aluminum (Al), % 0
90.5 to 95.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
0 to 0.050
Iron (Fe), % 41.4 to 50.3
0 to 0.55
Magnesium (Mg), % 0
4.5 to 6.5
Manganese (Mn), % 0 to 2.0
0 to 0.45
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 to 1.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15