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6110A Aluminum vs. ACI-ASTM CA40 Steel

6110A aluminum belongs to the aluminum alloys classification, while ACI-ASTM CA40 steel belongs to the iron 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 6110A aluminum and the bottom bar is ACI-ASTM CA40 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 11 to 18
10
Fatigue Strength, MPa 140 to 210
460
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Tensile Strength: Ultimate (UTS), MPa 360 to 470
910
Tensile Strength: Yield (Proof), MPa 250 to 430
860

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 190
750
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 600
1500
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
25
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.5
Density, g/cm3 2.8
7.7
Embodied Carbon, kg CO2/kg material 8.4
2.0
Embodied Energy, MJ/kg 150
28
Embodied Water, L/kg 1170
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 47 to 58
89
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 1300
1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 36 to 47
33
Strength to Weight: Bending, points 41 to 48
27
Thermal Diffusivity, mm2/s 65
6.7
Thermal Shock Resistance, points 16 to 21
33

Alloy Composition

Aluminum (Al), % 94.8 to 98
0
Carbon (C), % 0
0.2 to 0.4
Chromium (Cr), % 0.050 to 0.25
11.5 to 14
Copper (Cu), % 0.3 to 0.8
0
Iron (Fe), % 0 to 0.5
81.5 to 88.3
Magnesium (Mg), % 0.7 to 1.1
0
Manganese (Mn), % 0.3 to 0.9
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.7 to 1.1
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0 to 0.15
0