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ASTM A369 Grade FP91 vs. 707.0 Aluminum

ASTM A369 grade FP91 belongs to the iron alloys classification, while 707.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 707.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 19
1.7 to 3.4
Fatigue Strength, MPa 320
75 to 140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
26
Tensile Strength: Ultimate (UTS), MPa 670
270 to 300
Tensile Strength: Yield (Proof), MPa 460
170 to 250

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Maximum Temperature: Mechanical, °C 600
180
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
600
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 26
150
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
37
Electrical Conductivity: Equal Weight (Specific), % IACS 10
110

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 2.6
8.3
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 88
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
4.3 to 8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 560
210 to 430
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 24
26 to 29
Strength to Weight: Bending, points 22
32 to 34
Thermal Diffusivity, mm2/s 6.9
58
Thermal Shock Resistance, points 18
12 to 13

Alloy Composition

Aluminum (Al), % 0 to 0.020
90.5 to 93.6
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0.2 to 0.4
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 87.3 to 90.3
0 to 0.8
Magnesium (Mg), % 0
1.8 to 2.4
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.6
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 0.2
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0 to 0.010
0 to 0.25
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
4.0 to 4.5
Zirconium (Zr), % 0 to 0.010
0
Residuals, % 0
0 to 0.15