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7204 Aluminum vs. ASTM A369 Grade FP9

7204 aluminum belongs to the aluminum alloys classification, while ASTM A369 grade FP9 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 7204 aluminum and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 11 to 13
20
Fatigue Strength, MPa 110 to 130
160
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 130 to 220
300
Tensile Strength: Ultimate (UTS), MPa 220 to 380
470
Tensile Strength: Yield (Proof), MPa 120 to 310
240

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 210
600
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 150
26
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
10

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
6.5
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.4
2.0
Embodied Energy, MJ/kg 150
28
Embodied Water, L/kg 1140
87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 40
80
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 710
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 21 to 36
17
Strength to Weight: Bending, points 28 to 40
17
Thermal Diffusivity, mm2/s 58
6.9
Thermal Shock Resistance, points 9.4 to 16
13

Alloy Composition

Aluminum (Al), % 90.5 to 94.8
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.3
8.0 to 10
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.35
87.1 to 90.3
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0.2 to 0.7
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.3
0.5 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0