Hastelloy C22 (UNS N06022)
|
Introduction
Hastelloy C22 is a versatile austenitic nickel-chromium-molybdenum-tungsten alloy with enhanced resistance to pitting, crevice corrosion and stress corrosion cracking. The high chromium content provides good resistance to oxidizing media while the molybdenum and tungsten content give good resistance to reducing media. This nickel steel alloy also has excellent resistance to oxidizing aqueous media including wet chlorine and mixtures containing nitric acid or oxidizing acids with chlorine ions. Other corrosives Hastelloy C22 has resistance to are oxidizing acid chlorides, wet chlorine, formic and acetic acids, ferric and cupric chlorides, sea water, brine and many mixed or contaminated chemical solutions, both organic and inorganic. This nickel alloy also offers optimum resistance to environments where reducing and oxidizing conditions are encountered in process streams. This is beneficial in multi- purpose plants where such “upset” conditions occur frequently.
This nickel alloy resists the formation of grain-boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition.
Hastelloy C-22 should not be used in service temperatures above 1250° F due to the formation of detrimental phases which form above this temperature.
|
|
Character
l Resistant to pitting, crevice corrosion and stress corrosion cracking
l Outstanding resistance to both reducing and oxidizing media
l Excellent resistance to oxidizing aqueous media
l Exceptional resistance to a wide variety of chemical process environments including strong oxidizers such as ferric acids, acetic anhydride, and seawater and brine solutions
l Resists the formation of grain-boundary precipitates in the weld heat-affected zone
l Excellent weldability
Density=8.9g/cm3
|
|
Application
l Pharmaceutical industries use alloy C-22 fittings and tubing to avoid contamination caused by corrosion related failures
l Cellophane manufacturing
l Chlorination systems
l Pesticide production
l Incineration scrubber systems
l Chemical process industry in equipment like flue gas scrubbers, chlorination systems, sulfur dioxide scrubbers, pulp and paper bleach plants, pickling systems, and nuclear fuel reprocessing
l Waste water processing
|
|
Equal grades
UNS N06022, 2.4602, NS3308(China)
|
|
Chemical composition (%)
C≤0.01, Cr=20.00-22.50, Co≤2.50, Fe=2.0-6.0, Mn≤0.50, Mo=12.5-14.5, P≤0.020, Si≤0.08, Si≤0.020, W=2.50-3.50, V≤0.35, Ni=remainder
|
|
Standards
ASTM B622(seamless pipe)
ASTM B619 (welded pipe)
ASTM B626 (welded pipe)
ASTM B575(plate)
ASTM B574 (bar)
ASTM B564 (forging)
ASTM B366(fitting)
|
|
Forms available from A-one Alloy
Seamless pipe/tube, welded pipe/tube, plate, sheet, strip, bar, forging, flange, fitting, fastener
Hastelloy C22 sheet/plate/bar of EU/US origin available ex-stock.
|
|
Delivery
Plenty of bars in stock.
|
About A-ONE Alloy
Suzhou A-one Special Alloy Co. Ltd- referred as A-ONE Alloy hereafter, is a professional manufacturer of high performance alloy products. A-ONE Alloy is engaged in supplying high quality and cost effective Superalloy, Anti-Corrosion Alloy, Precision Alloy, Special Stainless Steel and Magnetostrictive Material to customers from worldwide.
Why A-ONE Alloy
· Rich experience in alloy industry
· Top rank experts of industry in China
· Advanced technology and process from top famous institutes in China
· Advanced devices through whole production and inspection process
· Strict quality control system
· Company motto: best service, most value
· Smart sales policy
A-ONE Alloy Service Items
· Non-standard product research and pre-production
· Fabrication of products
· Cutting, splitting for sheets and plates in stock
· Heat treatment(Solution treatment, aging harden treatment, anneal, spring temper, quench etc.)
· Surface finish(peeling, gridding)
· Logistics service
· Customized packing service(also for exporting)
· Import and export(A-ONE Alloy is certificated)
· Document translation
· Hard-to-find material sourcing
Customers of A-ONE Alloy
Customers of A-one Alloy are all over China (Taiwan and Hong Kong included). And we are exporting to USA, Canada, Italy, UK, Poland, Greece, Russia, Turkey, Iran, Israel, South Africa, South Korea, North Korea, India, Argentina, and Brazil and so on. Customers from 30+ countries trust us.
Where is A-ONE Alloy
A- A-ONE Alloy is located in No.2 Weihua Road, Suzhou Industrial Park, Jiangsu Province, China
B- ONE Alloy is around 130KM from Shanghai Pudong International Airport(PVG).
C- 13KM from Suzhou Railway Station
D- 7KM from Yangchenghu Station, Jinghu(G2) Highway
E- You can contact A-ONE Alloy sales for a pickup service
