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ACI-ASTM CB6 Steel vs. EN AC-45400 Aluminum

ACI-ASTM CB6 steel belongs to the iron alloys classification, while EN AC-45400 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 CB6 steel and the bottom bar is EN AC-45400 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 18
6.7
Fatigue Strength, MPa 410
55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 880
260
Tensile Strength: Yield (Proof), MPa 660
130

Thermal Properties

Latent Heat of Fusion, J/g 280
470
Maximum Temperature: Mechanical, °C 870
170
Melting Completion (Liquidus), °C 1440
630
Melting Onset (Solidus), °C 1390
560
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 17
140
Thermal Expansion, µm/m-K 10
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
95

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 2.5
7.8
Embodied Energy, MJ/kg 36
150
Embodied Water, L/kg 130
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
14
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
49
Strength to Weight: Axial, points 32
25
Strength to Weight: Bending, points 26
32
Thermal Diffusivity, mm2/s 4.6
54
Thermal Shock Resistance, points 31
12

Alloy Composition

Aluminum (Al), % 0
88.4 to 92.9
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
2.6 to 3.6
Iron (Fe), % 74.4 to 81
0 to 0.6
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.55
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 3.5 to 5.5
0 to 0.1
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
4.5 to 6.0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15