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296.0 Aluminum vs. ACI-ASTM CN3MN Steel

296.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CN3MN steel belongs to the iron 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 296.0 aluminum and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75 to 90
180
Elastic (Young's, Tensile) Modulus, GPa 72
210
Elongation at Break, % 3.2 to 7.1
39
Fatigue Strength, MPa 47 to 70
250
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
80
Tensile Strength: Ultimate (UTS), MPa 260 to 270
620
Tensile Strength: Yield (Proof), MPa 120 to 180
300

Thermal Properties

Latent Heat of Fusion, J/g 420
310
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 540
1410
Specific Heat Capacity, J/kg-K 870
460
Thermal Conductivity, W/m-K 130 to 150
13
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 37
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 99 to 110
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
33
Density, g/cm3 3.0
8.1
Embodied Carbon, kg CO2/kg material 7.8
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 1110
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.6 to 15
200
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 220
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 24 to 25
21
Strength to Weight: Bending, points 30 to 31
20
Thermal Diffusivity, mm2/s 51 to 56
3.4
Thermal Shock Resistance, points 12
14

Alloy Composition

Aluminum (Al), % 89 to 94
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 4.0 to 5.0
0 to 0.75
Iron (Fe), % 0 to 1.2
41.4 to 50.3
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.35
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.26
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 2.0 to 3.0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.35
0