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ACI-ASTM CK35MN Steel vs. 2017A Aluminum

ACI-ASTM CK35MN steel belongs to the iron alloys classification, while 2017A 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 CK35MN steel and the bottom bar is 2017A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
71
Elongation at Break, % 40
2.2 to 14
Fatigue Strength, MPa 270
92 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
27
Tensile Strength: Ultimate (UTS), MPa 650
200 to 460
Tensile Strength: Yield (Proof), MPa 310
110 to 290

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Maximum Temperature: Mechanical, °C 1100
220
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1410
510
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 12
150
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
34
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
100

Otherwise Unclassified Properties

Base Metal Price, % relative 31
11
Density, g/cm3 8.0
3.0
Embodied Carbon, kg CO2/kg material 5.9
8.2
Embodied Energy, MJ/kg 81
150
Embodied Water, L/kg 210
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
6.7 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 240
90 to 570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 22
19 to 42
Strength to Weight: Bending, points 21
26 to 44
Thermal Diffusivity, mm2/s 3.3
56
Thermal Shock Resistance, points 14
8.9 to 20

Alloy Composition

Aluminum (Al), % 0
91.3 to 95.5
Carbon (C), % 0 to 0.035
0
Chromium (Cr), % 22 to 24
0 to 0.1
Copper (Cu), % 0 to 0.4
3.5 to 4.5
Iron (Fe), % 43.4 to 51.8
0 to 0.7
Magnesium (Mg), % 0
0.4 to 1.0
Manganese (Mn), % 0 to 2.0
0.4 to 1.0
Molybdenum (Mo), % 6.0 to 6.8
0
Nickel (Ni), % 20 to 22
0
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0.2 to 0.8
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15