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ASTM A369 Grade FP9 vs. 4343 Aluminum

ASTM A369 grade FP9 belongs to the iron alloys classification, while 4343 aluminum belongs to the aluminum alloys. There are 30 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 ASTM A369 grade FP9 and the bottom bar is 4343 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 20
4.4
Fatigue Strength, MPa 160
45
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
27
Shear Strength, MPa 300
64
Tensile Strength: Ultimate (UTS), MPa 470
110
Tensile Strength: Yield (Proof), MPa 240
62

Thermal Properties

Latent Heat of Fusion, J/g 270
510
Maximum Temperature: Mechanical, °C 600
160
Melting Completion (Liquidus), °C 1450
620
Melting Onset (Solidus), °C 1410
580
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 26
180
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
44
Electrical Conductivity: Equal Weight (Specific), % IACS 10
150

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 2.0
7.9
Embodied Energy, MJ/kg 28
150
Embodied Water, L/kg 87
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
4.1
Resilience: Unit (Modulus of Resilience), kJ/m3 140
27
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 17
12
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 6.9
77
Thermal Shock Resistance, points 13
5.2

Alloy Composition

Aluminum (Al), % 0
90.3 to 93.2
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 8.0 to 10
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 87.1 to 90.3
0 to 0.8
Manganese (Mn), % 0.3 to 0.6
0 to 0.1
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.5 to 1.0
6.8 to 8.2
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15