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5456 Aluminum vs. ACI-ASTM CB30 Steel

5456 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CB30 steel belongs to the iron alloys. There are 27 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 5456 aluminum and the bottom bar is ACI-ASTM CB30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 320 to 340
500
Tensile Strength: Yield (Proof), MPa 150 to 250
230

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Corrosion, °C 65
420
Maximum Temperature: Mechanical, °C 190
940
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 120
21
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 97
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 9.0
2.3
Embodied Energy, MJ/kg 150
33
Embodied Water, L/kg 1170
130

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 470
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 33 to 35
18
Strength to Weight: Bending, points 38 to 40
18
Thermal Diffusivity, mm2/s 48
5.6
Thermal Shock Resistance, points 14 to 15
17

Alloy Composition

Aluminum (Al), % 92 to 94.8
0
Carbon (C), % 0
0 to 0.3
Chromium (Cr), % 0.050 to 0.2
18 to 21
Copper (Cu), % 0 to 0.1
0 to 1.2
Iron (Fe), % 0 to 0.4
72.9 to 82
Magnesium (Mg), % 4.7 to 5.5
0
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0