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2218 Aluminum vs. ASTM A369 Grade FP92

2218 aluminum belongs to the aluminum alloys classification, while ASTM A369 grade FP92 belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 2218 aluminum and the bottom bar is ASTM A369 grade FP92.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95 to 110
210
Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 6.8 to 10
19
Fatigue Strength, MPa 110
330
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 210 to 250
440
Tensile Strength: Ultimate (UTS), MPa 330 to 430
710
Tensile Strength: Yield (Proof), MPa 260 to 310
490

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Maximum Temperature: Mechanical, °C 220
590
Melting Completion (Liquidus), °C 640
1490
Melting Onset (Solidus), °C 510
1450
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 140
26
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 110
10

Otherwise Unclassified Properties

Base Metal Price, % relative 11
11
Density, g/cm3 3.1
7.9
Embodied Carbon, kg CO2/kg material 8.2
2.8
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1130
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
120
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
620
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 30 to 39
25
Strength to Weight: Bending, points 34 to 41
22
Thermal Diffusivity, mm2/s 52
6.9
Thermal Shock Resistance, points 15 to 19
19

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0 to 0.1
8.5 to 9.5
Copper (Cu), % 3.5 to 4.5
0
Iron (Fe), % 0 to 1.0
85.8 to 89.1
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.2
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 1.7 to 2.3
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.9
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.15
0