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6151 Aluminum vs. ACI-ASTM CE3MN Steel

6151 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CE3MN steel belongs to the iron alloys. There are 29 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 6151 aluminum and the bottom bar is ACI-ASTM CE3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
210
Elongation at Break, % 1.1 to 5.7
20
Fatigue Strength, MPa 80 to 100
380
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
81
Tensile Strength: Ultimate (UTS), MPa 330 to 340
770
Tensile Strength: Yield (Proof), MPa 270 to 280
590

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 590
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 170
15
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 150
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
21
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
4.2
Embodied Energy, MJ/kg 150
58
Embodied Water, L/kg 1180
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5 to 18
140
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 580
840
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 34
27
Strength to Weight: Bending, points 39
24
Thermal Diffusivity, mm2/s 70
4.1
Thermal Shock Resistance, points 15
21

Alloy Composition

Aluminum (Al), % 95.6 to 98.8
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.15 to 0.35
24 to 26
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0 to 1.0
58.1 to 65.9
Magnesium (Mg), % 0.45 to 0.8
0
Manganese (Mn), % 0 to 0.2
0 to 1.5
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.6 to 1.2
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0