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ACI-ASTM CK35MN Steel vs. 8176 Aluminum

ACI-ASTM CK35MN steel belongs to the iron alloys classification, while 8176 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 8176 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
69
Elongation at Break, % 40
15
Fatigue Strength, MPa 270
59
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
26
Tensile Strength: Ultimate (UTS), MPa 650
160
Tensile Strength: Yield (Proof), MPa 310
95

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
660
Melting Onset (Solidus), °C 1410
650
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 12
230
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
61
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
200

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.9
8.2
Embodied Energy, MJ/kg 81
150
Embodied Water, L/kg 210
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
21
Resilience: Unit (Modulus of Resilience), kJ/m3 240
66
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 22
16
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 3.3
93
Thermal Shock Resistance, points 14
7.0

Alloy Composition

Aluminum (Al), % 0
98.6 to 99.6
Carbon (C), % 0 to 0.035
0
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0 to 0.4
0
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 43.4 to 51.8
0.4 to 1.0
Manganese (Mn), % 0 to 2.0
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
0.030 to 0.15
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15