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ACI-ASTM CK35MN Steel vs. 4006 Aluminum

ACI-ASTM CK35MN steel belongs to the iron alloys classification, while 4006 aluminum belongs to the aluminum 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 ACI-ASTM CK35MN steel and the bottom bar is 4006 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
28 to 45
Elastic (Young's, Tensile) Modulus, GPa 210
69
Elongation at Break, % 40
3.4 to 24
Fatigue Strength, MPa 270
35 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
26
Tensile Strength: Ultimate (UTS), MPa 650
110 to 160
Tensile Strength: Yield (Proof), MPa 310
62 to 140

Thermal Properties

Latent Heat of Fusion, J/g 310
410
Maximum Temperature: Mechanical, °C 1100
160
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
620
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 12
220
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
56
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
180

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.0
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.9
8.1
Embodied Energy, MJ/kg 81
150
Embodied Water, L/kg 210
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
5.1 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 240
28 to 130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 22
11 to 16
Strength to Weight: Bending, points 21
19 to 24
Thermal Diffusivity, mm2/s 3.3
89
Thermal Shock Resistance, points 14
4.9 to 7.0

Alloy Composition

Aluminum (Al), % 0
97.4 to 98.7
Carbon (C), % 0 to 0.035
0
Chromium (Cr), % 22 to 24
0 to 0.2
Copper (Cu), % 0 to 0.4
0 to 0.1
Iron (Fe), % 43.4 to 51.8
0.5 to 0.8
Magnesium (Mg), % 0
0 to 0.010
Manganese (Mn), % 0 to 2.0
0 to 0.050
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
0.8 to 1.2
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.15