Hastelloy C22-（Hastelloy C22）（UNS N06022）（W.Nr.2.4602）（Nicrofer 5621 hMoW）（NiCr21Mo14W）
Available forms of Hastelloy C22
– Round bars、wire、forgings
– sheet、plate
– seamless pipe and tube、welded pipe and tube
– pipe fittings and flanges
– non-standard customised parts
1.Hastelloy C22 LIMITING CHEMICAL COMPOSITION, %
2.Hastelloy C22 Introduction
By virtue of its contents of chromium, molybdenum, tungsten and controlled iron, this alloy exhibits excellent resistance to both oxidizing and reducing acid environments, as well as those containing mixed acids. It is particularly useful for resistance to pitting and crevice corrosion in acid-halide environments. Applications include the chemical processing, pollution control, flue gas desulfurization, waste incineration and pulp and paper processing industries.
3.Hastelloy C22 MAJOR SPECIFICATIONS
4.Hastelloy C22 PHYSICAL CONSTANTS AND THERMAL PROPERTIES
Density, Ib/in3 (g/cm3)
…………………………………….0.311 (8.61)
Melting Range, °F (°C)
………….2464 – 2529 (1351 – 1387)
Specific Heat, Btu/lb•°F (J/kg•°C)
………………….0.091 (381)
Curie Temperature, °F (°C)
………………………….. <-320 (-196)
Permeability at 200 Oersted (15.9 kA/m)
…………….. <1.001
Coefficient of Expansion, 10-6 in/in•°F (μm/m•°C)
70-200°F (21–93°C)………………6.90 (12.42)
70-1000°F (21–538°C)…………. 7.46 (13.43)
70-1800°F (21–982°C)…………. 7.84 (14.11)
Thermal ConductivityA , Btu•in/ft2•h•°F (W/m•°C)
…….91 (13.2)
Electrical ResistivityA , ohm•circ mil/ft (μΩ•m)
…730.7 (1.215)
Young’s ModulusA , 106 psi (GPa)
………………………. 30.3 (209)
Shear’s ModulusA , 106 psi (GPa)
……………………… 11.0 (75.8)
Poisson’s RatioA
……………………………………………………………. 0.30
HardnessA , HRB
………………………………………………………………..86
Room temperature, as aged.
5.Hastelloy C22 TYPICAL MECHANICAL PROPERTIES
6.Hastelloy C22 Metallographic structure
Hastelloy C22 has a face-centered cubic lattice structure.
7.Hastelloy C22 Corrosion resistance
Hastelloy C22 alloy is suitable for various chemical process industries containing oxidizing and reducing media. The higher molybdenum and chromium contents make the alloy resistant to chloride ions, and the tungsten element further improves its corrosion resistance. Hastelloy C22 is one of only a few materials resistant to corrosion in wet chlorine, hypochlorite, and chlorine dioxide solutions. copper chloride).
8.Hastelloy C22 Application area
Hastelloy C22 alloy is widely used in chemical and petrochemical fields, such as components and catalytic systems in contact with chloride-containing organics. This material is especially suitable for use in high temperature, inorganic and organic acids mixed with impurities (such as formic acid and acetic acid), and seawater corrosive environments.
9.Hastelloy C22 Other application areas
1. Acetic acid/acetic anhydride
2. Pickling
3. Cellophane manufacturing
4. Chlorination system
5. Complex Mixed Acids
6. Rollers of electro-galvanizing tank
7. Expansion bellows
8. Flue gas cleaning system
9. Geothermal Wells
10. Hydrogen fluoride furnace cleaner
11. Incineration cleaner system
12. Nuclear fuel regeneration
13. Insecticide production
14. Phosphoric acid production
15. Pickling system
16. Plate heat exchanger
17. Selective Filtration System
18. Sulfur dioxide cooling tower
19. Sulfonation system
20. Tube heat exchanger
21. Surfacing valve
