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ASTM A369 Grade FP11 vs. 6081 Aluminum

ASTM A369 grade FP11 belongs to the iron alloys classification, while 6081 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 A369 grade FP11 and the bottom bar is 6081 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 20
9.0
Fatigue Strength, MPa 160
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 300
180
Tensile Strength: Ultimate (UTS), MPa 470
310
Tensile Strength: Yield (Proof), MPa 240
270

Thermal Properties

Latent Heat of Fusion, J/g 260
410
Maximum Temperature: Mechanical, °C 430
160
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
610
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 40
180
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
47
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
160

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.6
8.3
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 52
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
27
Resilience: Unit (Modulus of Resilience), kJ/m3 150
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 17
37
Thermal Diffusivity, mm2/s 11
74
Thermal Shock Resistance, points 14
14

Alloy Composition

Aluminum (Al), % 0
96.3 to 98.6
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 1.0 to 1.5
0 to 0.1
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 96.1 to 97.7
0 to 0.5
Magnesium (Mg), % 0
0.6 to 1.0
Manganese (Mn), % 0.3 to 0.6
0.1 to 0.45
Molybdenum (Mo), % 0.44 to 0.65
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.5 to 1.0
0.7 to 1.1
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15