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5456 Aluminum vs. ACI-ASTM CK35MN Steel

5456 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CK35MN steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 CK35MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 11 to 18
40
Fatigue Strength, MPa 130 to 210
270
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
81
Tensile Strength: Ultimate (UTS), MPa 320 to 340
650
Tensile Strength: Yield (Proof), MPa 150 to 250
310

Thermal Properties

Latent Heat of Fusion, J/g 390
310
Maximum Temperature: Corrosion, °C 65
440
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 97
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
31
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 9.0
5.9
Embodied Energy, MJ/kg 150
81
Embodied Water, L/kg 1170
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33 to 46
210
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 470
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 33 to 35
22
Strength to Weight: Bending, points 38 to 40
21
Thermal Diffusivity, mm2/s 48
3.3
Thermal Shock Resistance, points 14 to 15
14

Alloy Composition

Aluminum (Al), % 92 to 94.8
0
Carbon (C), % 0
0 to 0.035
Chromium (Cr), % 0.050 to 0.2
22 to 24
Copper (Cu), % 0 to 0.1
0 to 0.4
Iron (Fe), % 0 to 0.4
43.4 to 51.8
Magnesium (Mg), % 4.7 to 5.5
0
Manganese (Mn), % 0.5 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 6.8
Nickel (Ni), % 0
20 to 22
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0