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1070A Aluminum vs. ASTM A369 Grade FP91

1070A aluminum belongs to the aluminum alloys classification, while ASTM A369 grade FP91 belongs to the iron 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 1070A aluminum and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 18 to 40
200
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 2.3 to 33
19
Fatigue Strength, MPa 17 to 51
320
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 44 to 81
410
Tensile Strength: Ultimate (UTS), MPa 68 to 140
670
Tensile Strength: Yield (Proof), MPa 17 to 120
460

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 200
10

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
7.0
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1200
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.0 to 18
110
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 100
560
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 7.0 to 14
24
Strength to Weight: Bending, points 14 to 22
22
Thermal Diffusivity, mm2/s 94
6.9
Thermal Shock Resistance, points 3.1 to 6.3
18

Alloy Composition

Aluminum (Al), % 99.7 to 100
0 to 0.020
Carbon (C), % 0
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.25
87.3 to 90.3
Magnesium (Mg), % 0 to 0.030
0
Manganese (Mn), % 0 to 0.030
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 0.2
0.2 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 0 to 0.070
0
Zirconium (Zr), % 0
0 to 0.010