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ACI-ASTM CN3MN Steel vs. 4015 Aluminum

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while 4015 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 CN3MN steel and the bottom bar is 4015 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
35 to 70
Elastic (Young's, Tensile) Modulus, GPa 210
70
Elongation at Break, % 39
1.1 to 23
Fatigue Strength, MPa 250
46 to 71
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 620
130 to 220
Tensile Strength: Yield (Proof), MPa 300
50 to 200

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 1100
160
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
600
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 13
160
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
41
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
130

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
8.1
Embodied Energy, MJ/kg 84
150
Embodied Water, L/kg 200
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
2.4 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 210
18 to 290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 21
13 to 22
Strength to Weight: Bending, points 20
21 to 30
Thermal Diffusivity, mm2/s 3.4
66
Thermal Shock Resistance, points 14
5.7 to 9.7

Alloy Composition


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Aluminum (Al), % 0
94.9 to 97.9
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
0 to 0.2
Iron (Fe), % 41.4 to 50.3
0 to 0.7
Magnesium (Mg), % 0
0.1 to 0.5
Manganese (Mn), % 0 to 2.0
0.6 to 1.2
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
1.4 to 2.2
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15