HASTELLOY alloy C-22 (UNS N06022) is a versatile nickel-chromium-molybdenum-tungsten alloy renowned for its exceptional resistance to a wide range of aggressive chemicals. This article provides a detailed and rich introduction to HASTELLOY C-22, covering its chemical composition, mechanical properties, performance characteristics at different temperatures, industry applications, available shapes and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar products.
Skład chemiczny
Element
Skład (%)
Nikiel (Ni)
56.0 min
Chrom (Cr)
20.0 – 22.5
Molibden (Mo)
12.5 – 14.5
Żelazo (Fe)
2.0 – 6.0
Wolfram (W)
2,5 – 3,5
Cobalt (Co)
2.5 max
Mangan (Mn)
00,50 maks
Vanadium (V)
00,35 maks
Krzem (Si)
0.08 max
Węgiel (C)
00,010 maks
Fosfor (P)
00,020 maks
Siarka (S)
00,020 maks
Właściwości mechaniczne
Nieruchomość
Wartość
Wytrzymałość na rozciąganie, ksi (MPa)
115 (790) min
Granica plastyczności (przesunięcie 0,2%), ksi (MPa)
55 (380) min
Wydłużenie (% na 2 cale)
45 min
Twardość, Rockwell C (HRC)
89 max
Wydajność w różnych temperaturach
HASTELLOY C-22 exhibits excellent performance across varying temperature ranges:
Room Temperature:Superior resistance to oxidizing and reducing acids, including sulfuric acid, hydrochloric acid, and acetic acid.
Elevated Temperatures (up to 1250°F / 677°C):Maintains high strength and corrosion resistance in aggressive chemical environments.
Low Temperatures:Retains ductility and toughness down to cryogenic temperatures, suitable for applications requiring reliability in extreme conditions.
Zastosowania branżowe
HASTELLOY alloy C-22 is widely used in several industries due to its exceptional corrosion resistance:
Sektor przemysłowy
Aplikacje
Przetwarzanie chemiczne
Reactors, vessels, and piping systems handling corrosive chemicals such as acids and chlorides.
Petrochemical
Equipment for sulfuric acid regeneration, flue gas desulfurization systems, and chemical processing units.
Pharmaceutical
Pharmaceutical processing equipment requiring resistance to aggressive chemicals.
Pulpa i Papier
Digesters, bleach plants, and other components exposed to corrosive environments in paper production.
Kształty, rozmiary i standardy produkcyjne
Formularz produktu
Dostępne kształty
Dostępne rozmiary
Standardy produkcyjne
Sheets/Plates
Talerze, prześcieradła
Grubość: 0,025 ″ – 1,000 ″ (0,64 mm – 25,4 mm)
ASTM B575
Słupy
Round bars, hexagonal bars
Średnica: 0,25″ – 6,0″ (6,35 mm – 152,4 mm)
ASTM B574
Rury/Rury
Seamless tubes, welded pipes
OD: 0.5″ – 6.0″ (12.7mm – 152.4mm)
ASTM B619, ASTM B622
Standards and Corresponding Grades
Kraj/region
Standard/Grade
USA
UNS N06022
Europe
2.4602
Niemcy
NiCr21Mo14W
Francja
NC22DNb
Welding, Processing, Polishing, Heat Treatment
Proces
Detale
Spawalniczy
Excellent weldability using TIG, MIG methods, ensuring strong and reliable joints in corrosive environments.
Processing
Machinable using conventional methods, offering flexibility in fabrication processes.
Polerowanie
Capable of achieving smooth finishes for enhanced corrosion resistance and aesthetic appeal.
Obróbka cieplna
Solution annealing at 2050°F (1121°C) followed by rapid quenching optimizes material properties and performance.
Cold Processing, Advantages, and Disadvantages
Aspekt
Detale
Cold Processing
Retains ductility and formability at room temperature, facilitating shaping and fabrication.
Zalety
Exceptional resistance to a wide range of corrosive chemicals, high mechanical strength, and reliability in harsh environments.
Niedogodności
Higher initial cost compared to conventional stainless steels, potential limitations in availability of specific shapes and sizes.
podobne produkty
Product Name
Porównanie
HASTELLOY C-276 (UNS N10276)
Higher nickel content, broader resistance to oxidizing and reducing environments, suitable for more severe corrosive conditions.
HASTELLOY C-4 (UNS N06455)
Enhanced thermal stability, superior resistance to hot contaminated mineral acids, excellent performance in high-temperature applications.
Comparison of Similar Products
Właściwość/funkcja
Hastelloy C-22
Hastelloy C-276
Hastelloy C-4
Zawartość niklu (%)
56,0
57,0
65.0
Zawartość molibdenu (%)
12.5 – 14.5
16.0
16.0
Zawartość chromu (%)
20.0 – 22.5
16.0
16.0
Tensile Strength (ksi)
115 min
100 min
100 min
Yield Strength (ksi)
55 min
40 min
40 min
Odporność na korozję
Excellent in oxidizing and reducing acids, including sulfuric, hydrochloric, and acetic acid.
Wide range of corrosive environments, including strong oxidizers and reducing agents.
Superior resistance to hot contaminated mineral acids and high-temperature applications.
This article provides an in-depth introduction to HASTELLOY alloy C-22 (UNS N06022), encompassing its chemical composition, mechanical properties, performance in various environments, industry applications, available forms and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar alloys. The structured format using tables ensures clarity and accessibility of technical information, catering to engineers, manufacturers, and professionals seeking corrosion-resistant materials for demanding applications.
