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ACI-ASTM CN3MN Steel vs. A380.0 Aluminum

ACI-ASTM CN3MN 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 CN3MN steel and the bottom bar is A380.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
80
Elastic (Young's, Tensile) Modulus, GPa 210
73
Elongation at Break, % 39
3.3
Fatigue Strength, MPa 250
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
27
Tensile Strength: Ultimate (UTS), MPa 620
290
Tensile Strength: Yield (Proof), MPa 300
160

Thermal Properties

Latent Heat of Fusion, J/g 310
510
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
590
Melting Onset (Solidus), °C 1410
550
Specific Heat Capacity, J/kg-K 460
870
Thermal Conductivity, W/m-K 13
96
Thermal Expansion, µm/m-K 16
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
78

Otherwise Unclassified Properties

Base Metal Price, % relative 33
11
Density, g/cm3 8.1
2.9
Embodied Carbon, kg CO2/kg material 6.2
7.5
Embodied Energy, MJ/kg 84
140
Embodied Water, L/kg 200
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
8.3
Resilience: Unit (Modulus of Resilience), kJ/m3 210
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
48
Strength to Weight: Axial, points 21
28
Strength to Weight: Bending, points 20
34
Thermal Diffusivity, mm2/s 3.4
38
Thermal Shock Resistance, points 14
13

Alloy Composition


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Aluminum (Al), % 0
80.3 to 89.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
3.0 to 4.0
Iron (Fe), % 41.4 to 50.3
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.5
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
0 to 0.5
Nitrogen (N), % 0.18 to 0.26
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
7.5 to 9.5
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.35
Zinc (Zn), % 0
0 to 3.0
Residuals, % 0
0 to 0.5