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4007 Aluminum vs. ASTM A369 Grade FPA

4007 aluminum belongs to the aluminum alloys classification, while ASTM A369 grade FPA belongs to the iron alloys. 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 4007 aluminum and the bottom bar is ASTM A369 grade FPA.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 32 to 44
110
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 5.1 to 23
27
Fatigue Strength, MPa 46 to 88
180
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 80 to 90
240
Tensile Strength: Ultimate (UTS), MPa 130 to 160
380
Tensile Strength: Yield (Proof), MPa 50 to 120
240

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
52
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1160
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.4 to 23
89
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 110
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 12 to 15
13
Strength to Weight: Bending, points 20 to 23
15
Thermal Diffusivity, mm2/s 67
14
Thermal Shock Resistance, points 5.5 to 6.7
12

Alloy Composition

Aluminum (Al), % 94.1 to 97.6
0
Carbon (C), % 0
0 to 0.25
Chromium (Cr), % 0.050 to 0.25
0
Cobalt (Co), % 0 to 0.050
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0.4 to 1.0
98.3 to 99.63
Magnesium (Mg), % 0 to 0.2
0
Manganese (Mn), % 0.8 to 1.5
0.27 to 0.93
Nickel (Ni), % 0.15 to 0.7
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 1.0 to 1.7
0.1 to 0.5
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0