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1080A Aluminum vs. ACI-ASTM CK35MN Steel

1080A 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 1080A aluminum and the bottom bar is ACI-ASTM CK35MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 18 to 40
190
Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 2.3 to 34
40
Fatigue Strength, MPa 18 to 50
270
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
81
Tensile Strength: Ultimate (UTS), MPa 74 to 140
650
Tensile Strength: Yield (Proof), MPa 17 to 120
310

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 640
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
12
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 62
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 200
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 8.3
5.9
Embodied Energy, MJ/kg 160
81
Embodied Water, L/kg 1200
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 19
210
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 100
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 7.6 to 15
22
Strength to Weight: Bending, points 14 to 22
21
Thermal Diffusivity, mm2/s 94
3.3
Thermal Shock Resistance, points 3.3 to 6.4
14

Alloy Composition

Aluminum (Al), % 99.8 to 100
0
Carbon (C), % 0
0 to 0.035
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 0 to 0.030
0 to 0.4
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.15
43.4 to 51.8
Magnesium (Mg), % 0 to 0.020
0
Manganese (Mn), % 0 to 0.020
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 0.15
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.020
0
Zinc (Zn), % 0 to 0.060
0