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2219 Aluminum vs. AISI 348 Stainless Steel

2219 aluminum belongs to the aluminum alloys classification, while AISI 348 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 2219 aluminum and the bottom bar is AISI 348 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 2.2 to 20
41
Fatigue Strength, MPa 90 to 130
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 110 to 280
400
Tensile Strength: Ultimate (UTS), MPa 180 to 480
580
Tensile Strength: Yield (Proof), MPa 88 to 390
230

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 230
940
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 540
1390
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 110 to 170
16
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28 to 44
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 81 to 130
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 11
19
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.2
3.7
Embodied Energy, MJ/kg 150
54
Embodied Water, L/kg 1130
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.6 to 60
190
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 1060
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 44
25
Strength to Weight: Axial, points 16 to 43
21
Strength to Weight: Bending, points 23 to 44
20
Thermal Diffusivity, mm2/s 42 to 63
4.2
Thermal Shock Resistance, points 8.2 to 22
13

Alloy Composition

Aluminum (Al), % 91.5 to 93.8
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Cobalt (Co), % 0
0 to 0.2
Copper (Cu), % 5.8 to 6.8
0
Iron (Fe), % 0 to 0.3
63.8 to 74
Magnesium (Mg), % 0 to 0.020
0
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Nickel (Ni), % 0
9.0 to 13
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0.020 to 0.1
0
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0.1 to 0.25
0
Residuals, % 0 to 0.15
0