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ASTM A182 Grade F6b vs. 7021 Aluminum

ASTM A182 grade F6b belongs to the iron alloys classification, while 7021 aluminum belongs to the aluminum alloys. There are 30 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 ASTM A182 grade F6b and the bottom bar is 7021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 18
9.4
Fatigue Strength, MPa 440
150
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
26
Shear Strength, MPa 530
270
Tensile Strength: Ultimate (UTS), MPa 850
460
Tensile Strength: Yield (Proof), MPa 710
390

Thermal Properties

Latent Heat of Fusion, J/g 280
380
Maximum Temperature: Mechanical, °C 750
200
Melting Completion (Liquidus), °C 1450
630
Melting Onset (Solidus), °C 1400
510
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 25
150
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
38
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
120

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
9.5
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 2.2
8.3
Embodied Energy, MJ/kg 30
150
Embodied Water, L/kg 100
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
41
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
1110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 30
44
Strength to Weight: Bending, points 26
45
Thermal Diffusivity, mm2/s 6.7
59
Thermal Shock Resistance, points 31
20

Alloy Composition

Aluminum (Al), % 0
90.7 to 93.7
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 11.5 to 13.5
0 to 0.050
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 81.2 to 87.1
0 to 0.4
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 0.4 to 0.6
0
Nickel (Ni), % 1.0 to 2.0
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.25
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
5.0 to 6.0
Zirconium (Zr), % 0
0.080 to 0.18
Residuals, % 0
0 to 0.15