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ACI-ASTM CG12 Steel vs. 2036 Aluminum

ACI-ASTM CG12 steel belongs to the iron alloys classification, while 2036 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 CG12 steel and the bottom bar is 2036 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 40
24
Fatigue Strength, MPa 190
130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
26
Tensile Strength: Ultimate (UTS), MPa 550
340
Tensile Strength: Yield (Proof), MPa 220
200

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 1040
190
Melting Completion (Liquidus), °C 1410
650
Melting Onset (Solidus), °C 1370
560
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 15
160
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
41
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
130

Otherwise Unclassified Properties

Base Metal Price, % relative 18
10
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 3.3
8.1
Embodied Energy, MJ/kg 48
150
Embodied Water, L/kg 160
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
70
Resilience: Unit (Modulus of Resilience), kJ/m3 120
270
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
48
Strength to Weight: Axial, points 20
33
Strength to Weight: Bending, points 19
38
Thermal Diffusivity, mm2/s 4.0
62
Thermal Shock Resistance, points 12
15

Alloy Composition

Aluminum (Al), % 0
94.4 to 97.4
Carbon (C), % 0 to 0.12
0
Chromium (Cr), % 20 to 23
0 to 0.1
Copper (Cu), % 0
2.2 to 3.0
Iron (Fe), % 60.3 to 70
0 to 0.5
Magnesium (Mg), % 0
0.3 to 0.6
Manganese (Mn), % 0 to 1.5
0.1 to 0.4
Nickel (Ni), % 10 to 13
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15