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ACI-ASTM CK35MN Steel vs. 2095 Aluminum

ACI-ASTM CK35MN steel belongs to the iron alloys classification, while 2095 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 2095 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
70
Elongation at Break, % 40
8.5
Fatigue Strength, MPa 270
200
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
26
Tensile Strength: Ultimate (UTS), MPa 650
700
Tensile Strength: Yield (Proof), MPa 310
610

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Maximum Temperature: Mechanical, °C 1100
210
Melting Completion (Liquidus), °C 1460
660
Melting Onset (Solidus), °C 1410
540
Specific Heat Capacity, J/kg-K 470
910
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
110

Otherwise Unclassified Properties

Base Metal Price, % relative 31
31
Density, g/cm3 8.0
3.0
Embodied Carbon, kg CO2/kg material 5.9
8.6
Embodied Energy, MJ/kg 81
160
Embodied Water, L/kg 210
1470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
57
Resilience: Unit (Modulus of Resilience), kJ/m3 240
2640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 22
65
Strength to Weight: Bending, points 21
59
Thermal Diffusivity, mm2/s 3.3
49
Thermal Shock Resistance, points 14
31

Alloy Composition

Aluminum (Al), % 0
91.3 to 94.9
Carbon (C), % 0 to 0.035
0
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0 to 0.4
3.9 to 4.6
Iron (Fe), % 43.4 to 51.8
0 to 0.15
Lithium (Li), % 0
0.7 to 1.5
Magnesium (Mg), % 0
0.25 to 0.8
Manganese (Mn), % 0 to 2.0
0 to 0.25
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 to 0.12
Silver (Ag), % 0
0.25 to 0.6
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.040 to 0.18
Residuals, % 0
0 to 0.15