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ACI-ASTM CN3M Steel vs. 2030 Aluminum

ACI-ASTM CN3M steel belongs to the iron alloys classification, while 2030 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 CN3M steel and the bottom bar is 2030 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
5.6 to 8.0
Fatigue Strength, MPa 150
91 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 500
370 to 420
Tensile Strength: Yield (Proof), MPa 190
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
510
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 13
130
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
34
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
99

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 8.1
3.1
Embodied Carbon, kg CO2/kg material 5.9
8.0
Embodied Energy, MJ/kg 80
150
Embodied Water, L/kg 200
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 89
390 to 530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 17
33 to 38
Strength to Weight: Bending, points 17
37 to 40
Thermal Diffusivity, mm2/s 3.4
50
Thermal Shock Resistance, points 11
16 to 19

Alloy Composition

Aluminum (Al), % 0
88.9 to 95.2
Bismuth (Bi), % 0
0 to 0.2
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0 to 0.1
Copper (Cu), % 0
3.3 to 4.5
Iron (Fe), % 42.4 to 52.5
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 0
0.5 to 1.3
Manganese (Mn), % 0 to 2.0
0.2 to 1.0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 23 to 27
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3