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6008 Aluminum vs. ASTM Grade LC4 Steel

6008 aluminum belongs to the aluminum alloys classification, while ASTM grade LC4 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 6008 aluminum and the bottom bar is ASTM grade LC4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.1 to 17
27
Fatigue Strength, MPa 55 to 88
230
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 200 to 290
570
Tensile Strength: Yield (Proof), MPa 100 to 220
310

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 180
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 620
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 190
49
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 160
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.6
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.5
1.8
Embodied Energy, MJ/kg 160
24
Embodied Water, L/kg 1180
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 28
130
Resilience: Unit (Modulus of Resilience), kJ/m3 76 to 360
260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 21 to 29
20
Strength to Weight: Bending, points 28 to 35
19
Thermal Diffusivity, mm2/s 77
13
Thermal Shock Resistance, points 9.0 to 13
17

Alloy Composition

Aluminum (Al), % 96.5 to 99.1
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.35
93.4 to 95.5
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.3
0.5 to 0.8
Nickel (Ni), % 0
4.0 to 5.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 0.9
0 to 0.6
Sulfur (S), % 0
0 to 0.045
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0.050 to 0.2
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0