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5449 Aluminum vs. ASTM A369 Grade FP91

5449 aluminum belongs to the aluminum alloys classification, while ASTM A369 grade FP91 belongs to the iron 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 5449 aluminum and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 4.0 to 17
19
Fatigue Strength, MPa 78 to 120
320
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 130 to 190
410
Tensile Strength: Ultimate (UTS), MPa 210 to 330
670
Tensile Strength: Yield (Proof), MPa 91 to 260
460

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 190
600
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
26
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
10

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.0
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.5
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1180
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 29
110
Resilience: Unit (Modulus of Resilience), kJ/m3 60 to 480
560
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 22 to 33
24
Strength to Weight: Bending, points 29 to 39
22
Thermal Diffusivity, mm2/s 56
6.9
Thermal Shock Resistance, points 9.4 to 15
18

Alloy Composition

Aluminum (Al), % 94.1 to 97.8
0 to 0.020
Carbon (C), % 0
0.080 to 0.12
Chromium (Cr), % 0 to 0.3
8.0 to 9.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.7
87.3 to 90.3
Magnesium (Mg), % 1.6 to 2.6
0
Manganese (Mn), % 0.6 to 1.1
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 0
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 0.4
0.2 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.1
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 0 to 0.3
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.15
0