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ASTM A369 Grade FP91 vs. 1080A Aluminum

ASTM A369 grade FP91 belongs to the iron alloys classification, while 1080A aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 FP91 and the bottom bar is 1080A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
18 to 40
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 19
2.3 to 34
Fatigue Strength, MPa 320
18 to 50
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
26
Shear Strength, MPa 410
49 to 81
Tensile Strength: Ultimate (UTS), MPa 670
74 to 140
Tensile Strength: Yield (Proof), MPa 460
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 600
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 26
230
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
62
Electrical Conductivity: Equal Weight (Specific), % IACS 10
200

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.6
8.3
Embodied Energy, MJ/kg 37
160
Embodied Water, L/kg 88
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
3.1 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 560
2.1 to 100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 24
7.6 to 15
Strength to Weight: Bending, points 22
14 to 22
Thermal Diffusivity, mm2/s 6.9
94
Thermal Shock Resistance, points 18
3.3 to 6.4

Alloy Composition

Aluminum (Al), % 0 to 0.020
99.8 to 100
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0
Copper (Cu), % 0
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 87.3 to 90.3
0 to 0.15
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 0.3 to 0.6
0 to 0.020
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.2 to 0.5
0 to 0.15
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0 to 0.010
0 to 0.020
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
0 to 0.060
Zirconium (Zr), % 0 to 0.010
0