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ACI-ASTM CB30 Steel vs. 240.0 Aluminum

ACI-ASTM CB30 steel belongs to the iron alloys classification, while 240.0 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 CB30 steel and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 500
240
Tensile Strength: Yield (Proof), MPa 230
200

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Maximum Temperature: Mechanical, °C 940
180
Melting Completion (Liquidus), °C 1430
600
Melting Onset (Solidus), °C 1380
520
Specific Heat Capacity, J/kg-K 480
860
Thermal Conductivity, W/m-K 21
96
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
23
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
65

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 7.7
3.2
Embodied Carbon, kg CO2/kg material 2.3
8.7
Embodied Energy, MJ/kg 33
150
Embodied Water, L/kg 130
1100

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 140
280
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
43
Strength to Weight: Axial, points 18
20
Strength to Weight: Bending, points 18
26
Thermal Diffusivity, mm2/s 5.6
35
Thermal Shock Resistance, points 17
11

Alloy Composition

Aluminum (Al), % 0
81.7 to 86.9
Carbon (C), % 0 to 0.3
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0 to 1.2
7.0 to 9.0
Iron (Fe), % 72.9 to 82
0 to 0.5
Magnesium (Mg), % 0
5.5 to 6.5
Manganese (Mn), % 0 to 1.0
0.3 to 0.7
Nickel (Ni), % 0 to 2.0
0.3 to 0.7
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15