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ASTM A369 Grade FPB vs. 5040 Aluminum

ASTM A369 grade FPB belongs to the iron alloys classification, while 5040 aluminum belongs to the aluminum 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 ASTM A369 grade FPB and the bottom bar is 5040 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
66 to 74
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 19
5.7 to 6.8
Fatigue Strength, MPa 180
100 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 290
140 to 150
Tensile Strength: Ultimate (UTS), MPa 470
240 to 260
Tensile Strength: Yield (Proof), MPa 270
190 to 230

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
190
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
600
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
160
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
41
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 1.4
8.3
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 46
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
14 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 190
260 to 380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 17
24 to 26
Strength to Weight: Bending, points 17
31 to 32
Thermal Diffusivity, mm2/s 14
64
Thermal Shock Resistance, points 15
10 to 11

Alloy Composition

Aluminum (Al), % 0
95.2 to 98
Carbon (C), % 0 to 0.3
0
Chromium (Cr), % 0
0.1 to 0.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 98.1 to 99.61
0 to 0.7
Magnesium (Mg), % 0
1.0 to 1.5
Manganese (Mn), % 0.29 to 1.1
0.9 to 1.4
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.1 to 0.5
0 to 0.3
Sulfur (S), % 0 to 0.035
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15