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240.0 Aluminum vs. ASTM A369 Grade FP91

240.0 aluminum belongs to the aluminum alloys classification, while ASTM A369 grade FP91 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 240.0 aluminum and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.0
19
Fatigue Strength, MPa 140
320
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 240
670
Tensile Strength: Yield (Proof), MPa 200
460

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 180
600
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 520
1420
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 96
26
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 65
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.0
Density, g/cm3 3.2
7.8
Embodied Carbon, kg CO2/kg material 8.7
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1100
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2
110
Resilience: Unit (Modulus of Resilience), kJ/m3 280
560
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 43
25
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 35
6.9
Thermal Shock Resistance, points 11
18

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0 to 0.020
Carbon (C), % 0
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 7.0 to 9.0
0
Iron (Fe), % 0 to 0.5
87.3 to 90.3
Magnesium (Mg), % 5.5 to 6.5
0
Manganese (Mn), % 0.3 to 0.7
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 0.3 to 0.7
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0.2 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.2
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.15
0