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MATERIAL SPECS // C22
Alloy C22 / UNS N06022 Materials for Corrosion-Critical Chemical Systems
Alloy C22 is a nickel-chromium-molybdenum-tungsten alloy specified as UNS N06022 and W.Nr. 2.4602 for corrosion-critical material applications. TiAlloy provides pipe, tube, plate, sheet, bar and round bar with traceability records, export services, and clear boundaries around pricing, stock availability, and service life.
RFQ scope TiAlloy can discuss
- ASTM B622 pipe/tube and ASTM B619 welded pipe anchors.
- ASTM B575 plate, sheet and strip anchor
- ASTM B574 rod and bar anchor
- Reviewing EN 10204 certificate types, PMI checks, marking requirements, packaging procedures, and export records.
EQUIVALENT GRADES & FORMS //
UNS N06022
2.4602 material
hastelloy c22 plate
hastelloy c22 pipe
hastelloy c22 tubing
hastelloy c22 bar
VIEW PORT //
Alloy C22 / UNS N06022 for Verified Oxidizing, Mixed-Acid, and Localized-Corrosion Risk Scenarios
EXP // 01
20+ years
TiAlloy metal manufacturing experience across titanium alloys, stainless steel and nickel alloy products.
FACILITY // 02
30,000+ m2
Modern production base supporting melting, forging, rolling, heat treatment, pipe, bar and sheet processing.
QUALITY // 03
3 systems
ISO 9001 quality management, environmental management and occupational health and safety management certificates are referenced in the Certification folder.
COMMITMENT // 04
0 promise
TiAlloy will not claim C22 is corrosion-proof, FDA-approved, ISO 15156-approved or automatically better than C276 without project evidence.
MATERIAL VERIFICATION CONSOLE
01 Procurement & Risk Management
A procurement manager asks not just if alloy C22 resists corrosion but also if the delivered heat, routing, test reports, and marking will pass the incoming quality inspection.
Alloy C22, often referred to as Hastelloy C22 or hastelloy c-22, is a nickel-chromium-molybdenum-tungsten alloy utilized when the combination of oxidizing and non-oxidizing chemical environments leads to the risk of pitting, crevice corrosion, and stress corrosion cracking. Its selection stems not merely from a preference for superior material but as a calculated approach to managing risk, which necessitates verification against the specific medium, its concentration, temperature, weld conditions, and cleaning chemistry.
02 Chemistry & Resistance Limitations
Technical literature describes the nominal chemistry with high nickel, approximately 22% chromium, 13% molybdenum, and 3% tungsten. Corrosion tables often use a 0.1 mm/y rate as a reference, but that data only support corrosion resistance language and does not guarantee complete resistance. TiAlloy also does not assert that any single grade is suitable for all chloride, nitric acid, ferric chloride, chlorine, or inorganic acid environments.
03 Audit Route & RFQ Preparation
For sensitive audit orders, confirm mechanical properties and tensile strength directly from the material test certificate provided by TiAlloy, rather than relying on brochure values. If the application has a history of pitting, pit initiation, or the drawing specifies an ASTM G48, ASTM G36, or other corrosion-test standard, include this in your Request for Quotation (RFQ) to allow for an inspection route review prior to manufacturing.
04 Safety & Processing Integration
If the scope of supply includes cutting, welding, grinding, anneal cleanup, or hot work, handling chromium-containing alloy involves safety and exposure control responsibilities. A realistic approach integrates material selection, weldability, heat treatment, surface finish, and on-site safety considerations as one review.
C-ALLOY
TiAlloy Alloy C22 Pipe, Tube, Plate, Sheet, Bar, and Round Bar
[ CLICK CARDS OR TAGS TO FLIP MANUAL ]
SYS.CHK // 10204.VERIFIED
Compliance Protocol
A quality engineer has the authority to reject even a technically suitable material if the purchase order omits the specific ASTM form standard, the correct EN 10204 certificate type, a PMI requirement, or a third-party inspection specification.
Pipe and tube
TiAlloy product rows include N06022 / 2.4602 Alloy C-22 tube and pipe with ASTM B622 and ASTM B619 specification anchors for chemical piping, oxidizing acid transfer, pollution abatement systems, waste liquid treatment applications, pharmaceutical and fine chemical lines, heat exchanger tube material, and condenser tube material discussions.
ASTM B622-23 applies to nickel alloy pipe and tube made without a welded seam, while ASTM B619/B619M-19(2023) is for welded nickel alloy pipe. Route definition is critical: B622 pipe/tube, welded pipe, and welded tube are not interchangeable purchase descriptions.
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Plate and sheet
TiAlloy product rows include N06022 / 2.4602 Alloy C-22 sheet and plate conforming to ASTM B575, intended for chemical processing equipment, exhaust gas treatment systems, absorber towers, reactor and tank linings, environmental projects, and shells or liners in fine chemical applications.
ASTM B575-17(2023) describes plate, sheet and strip products, including UNS N06022. TiAlloy discusses production and RFQ details such as thickness, width, length, surface, test path and packaging before manufacture rather than making unsupported 24 hour stock claims.
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Bar and round bar
TiAlloy product rows include N06022 / 2.4602 Alloy C-22 rod and bar per ASTM B574 for pump and valve bodies, shaft sleeves, connectors, fasteners, pollution control equipment components and chemical or pharmaceutical machined parts.
ASTM B574-23 is the standard covering rod and bar for low carbon nickel-chromium-molybdenum alloys, including uns n06022. Send diameter, tolerance, finish and inspection specifications with the RFQ for any machined shaft, sleeve or connector.
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UNS N06022 / 2.4602 Standards, Documents, and RFQ Checklist
The typical workaround is to segment the PO request into the relevant form, path, condition, doc type, and inspection level prior to price negotiations.
RFQ_SYNC // 09
01
UNS N06022 / 2.4602 material
Use this when
Buyer searches for alloy c22, hastelloy c22 material or uns n06022 material
Evidence anchor
Material identity plus chemistry review
Risk if omitted
Wrong alloy substitution or unclear marking
02
ASTM B574
Use this when
Rod, bar or round bar for machining
Evidence anchor
ASTM B574-23
Risk if omitted
Bar route and test requirements left open
03
ASTM B575
Use this when
Plate, sheet or strip
Evidence anchor
ASTM B575-17(2023)
Risk if omitted
Thickness, flatness or surface expectations drift
04
ASTM B622
Use this when
B622 pipe or tube
Evidence anchor
ASTM B622-23
Risk if omitted
B622 route not separated from welded pipe
05
ASTM B619/B619M
Use this when
Welded pipe
Evidence anchor
ASTM B619/B619M-19(2023)
Risk if omitted
Pipe class, weld and test scope unclear
06
ASTM B626
Use this when
Welded tube for condenser or heat exchanger material discussion
Evidence anchor
ASTM B626-26
Risk if omitted
Finished equipment approval implied by mistake
07
EN 10204 certificate type
Use this when
EU buyer or third-party inspection package
Evidence anchor
EN 10204 document type confirmation
Risk if omitted
MTC accepted internally but rejected by customer audit
08
PMI and heat traceability
Use this when
Incoming inspection or project QA requires heat-level verification
Evidence anchor
Buyer RFQ and order documents
Risk if omitted
Material is delayed at receiving inspection
09
Packing and export documents
Use this when
Europe, Southeast Asia, Middle East, South America, Japan or Korea shipment
Evidence anchor
TiAlloy export service scope
Risk if omitted
Customs, broker or site delivery delay
VISUAL_REF // QUALITY_ASSURANCE
Pricing discussion should be based on an RFQ for the product form, size, quantity, ASTM edition, test level / certificate required, country of delivery and a drawing or specification. TiAlloy’s export team can confirm the exact request from you rather than attempting to translate a keyword like “hastelloy c22 price”.
The C22 Corrosion-Service Fit Matrix
For example, after a failure during a chloride or mixed acid process, an engineer might compare alloy C22 vs C276. However, concentration, temperature, oxidizing contaminants and weld conditions will determine which alloy is more suitable.
To be blunt, while alloy C22 is an excellent choice for many oxidizing, mixed acid and localized corrosion applications, the part name alone doesn’t make it the right choice.
Oxidizing acid transfer
Why Alloy C22 enters the shortlist
Nickel-chromium-molybdenum-tungsten chemistry is designed for broad corrosion resistance.
What can still go wrong
Temperature, concentration and impurities can change corrosion rate from acceptable to risky.
RFQ evidence TiAlloy needs
Medium analysis, °C range, flow condition and required ASTM form.
Mixed acid process line
Why Alloy C22 enters the shortlist
Useful where one alloy must face more than one chemical exposure in a production line.
What can still go wrong
A trade-off is that mixed oxidizing/reducing conditions may point to C276 or another nickel alloy.
RFQ evidence TiAlloy needs
Worst-case chemistry, cleaning cycle and operating hours per year.
Pitting or crevice corrosion risk
Why Alloy C22 enters the shortlist
C22 is often specified when localized attack is more expensive than material premium.
What can still go wrong
Crevices, deposits, weld discoloration and stagnant zones can still create failure risk.
RFQ evidence TiAlloy needs
Drawing, weld details, gap geometry and surface finish expectation.
Stress corrosion cracking
Why Alloy C22 enters the shortlist
Nickel alloy selection can reduce risk versus lower-alloy alternatives in some services.
What can still go wrong
Residual stress, temperature and chloride chemistry remain project-specific.
RFQ evidence TiAlloy needs
Form, heat treatment, fabrication route and inspection plan.
Exhaust gas treatment
Why Alloy C22 enters the shortlist
Case-history evidence includes severe waste-treatment exposure and 15 months service without maintenance in a C-22 quench duct.
What can still go wrong
A case history is not a guarantee for another scrubber, duct or absorber tower.
RFQ evidence TiAlloy needs
Gas/liquid composition, chloride level, pH, temperature swing and drawing.
Heat exchanger or condenser tube
Why Alloy C22 enters the shortlist
ASTM B626-26 supports welded tube material scope for heat exchanger and condenser applications.
What can still go wrong
Tube material approval is not finished heat exchanger design approval.
RFQ evidence TiAlloy needs
Tube route, wall thickness, design code and hydrostatic or NDE requirements.
Pharmaceutical/fine chemical
Why Alloy C22 enters the shortlist
TiAlloy local product rows include pharmaceutical and fine chemical piping applications.
What can still go wrong
FDA CGMP responsibility stays with the firm controlling equipment design, cleaning and product-contact suitability.
RFQ evidence TiAlloy needs
Cleaning media, product-contact limits, certificate level and buyer validation requirement.
Machined parts from bar
Why Alloy C22 enters the shortlist
Bar or round bar can support shafts, sleeves, connectors and fasteners in corrosion-risk assemblies.
What can still go wrong
Machining tolerance, galling risk and surface condition can become the hidden problem.
RFQ evidence TiAlloy needs
Drawing, diameter, tolerance, finish and PMI plan.
Replacement after 316L failure
Why Alloy C22 enters the shortlist
C22 can be considered when 316L is over-constrained by chloride, oxidizing or mixed-acid service.
What can still go wrong
Counter-intuitive point: the cheapest grade is not always the best lifecycle decision.
RFQ evidence TiAlloy needs
Failure history, downtime cost, corrosion samples and requested lead time.
Alloy Evaluation Protocol
C22 vs C276, 316L, and Other Nickel Alloy Options Within Verified Service Conditions
Most people assume the more expensive nickel alloy is automatically the best solution. In the industry, this is not always true. C22 is often competitive with 316L, C276, and C-276 in certain oxidizing, chloride bearing and localized corrosion applications. However, the decision is not always C22. A high-temperature reducing acid, an extensively welded component or a need for a different nickel alloy family can affect the recommendation.
Buyer discussions of alloy c22 vs c276 and c22 vs c276 help inform RFQs, but these discussions are not the deciding factor in a corrosion application. TiAlloy engineers every RFQ around chemistry, standards, weld exposure, testing package, and shipping route to ensure that the right alloy is identified and confirmed by the buyer.
Differentiation is not a slogan; it is engineering. We will not make sweeping claims about superiority. Instead, TiAlloy engineers RFQs based on your chemistry, form standard, weld exposure, inspection package, and shipping route. Then you can confirm that the path is correct.
Comparison guardrails
01 // RISK PROFILE
Choose C22 for demonstrated risk situations, not for blanket claims of “best alloy”.
02 // EXTREME CHEMISTRY
Consider 316L, C276, and premium nickel alloy materials when dealing with extreme chemistry.
03 // FORM CONFIRMATION
Confirm whether you require plate, sheet, B622 pipe, welded pipe, tubing, rod, or bar stock.
04 // CORROSION GUIDELINES
Look at the 0.1 mm/y corrosion charts as guidelines for real-world conditions rather than an absolute guarantee.
05 // RFQ PRIORITIES
Be honest with your RFQ if lead time, price, or certification requirements are your primary concerns.
APP_SYS
Applications TiAlloy Can Discuss as Material/Form Fit, Not Finished Equipment Approval
Chemical process and petrochemical service
TiAlloy provides nickel alloy plate, pipe and bar products to buyers in chemical, petrochemical, energy, and industrial equipment markets. Often, the material spec is not enough; it takes a 3-point match for the material, medium, and inspection package. Request your quote with chemistry, °C range and ASTM standard.
Pollution control, scrubber and exhaust systems
TiAlloy local product rows address exhaust gas treatment, absorber tower plate, and pollution-control equipment markets. Because the risk associated with acid gas, condensate, and deposits can vary, TiAlloy verifies the form, production route, and necessary records before proceeding with manufacturing.
Heat exchanger, condenser and seawater-adjacent projects
ASTM B626 welded tube scope covers material aspects in the discussion of heat exchanger and condenser tube applications. Final-equipment approval is not provided by the scope. Send your dimensions, wall thickness, pressure/design code, and NDE needs in your request for quotation.
Pharmaceutical and fine chemical piping
Under CGMP regulations, product-contact suitability and cleaning validation stay within the manufacturing company. While TiAlloy can address fitment for its Alloy C22 tube, pipe, plate, or bar forms, it cannot claim approval of the material by the FDA.
Machined parts, sleeves and fasteners
TiAlloy rod/bar product lines address applications like shaft sleeves, fasteners, connectors, and chemical/pharma machining parts. Quality trade-offs center on the fabrication specification: a 2 mm surface allowance or precision tolerance could prove just as important as the alloy name. Supply us with your drawing and PMI requirements.
Export project supply
TiAlloy exports products to Europe, Southeast Asia, the Middle East, South America, Japan, and South Korea. Delivery risk can be reduced by reviewing packaging, marking, MTC, certificate type, and broker documents before the material ships.
BOUNDARY PROTOCOL
The catch is that a suitable form might be agreed upon for discussion, but final product design, construction code, cleaning procedures, and site validation will remain the buyer’s responsibility.
MFG_INSPECTION_PROTOCOL // SYS.07
Manufacturing, Inspection, and Export Support from TiAlloy
CAPABILITY & COMPLIANCE
Document package options to specify
- Material test certificate and heat number traceability
- EN 10204 3.1 or 3.2 inspection document type as requested
- PMI, dimensional inspection, surface inspection and third-party inspection
- ASTM edition, product form, wall thickness, diameter, thickness, and tolerance
- Export packing, markings, commercial invoice and shipping document coordination
◂ CLICK CARDS TO ROTATE ▸
Pricing, Lead Time, and Specification Confirmation Before Production
Price and lead time are order-dependent because quantity, route, certification level, inspection and transportation requirements change the work behind the quote.
Public procurement standards recognize that delivery speed, warranty, volume, specifications and order terms can affect commercial product cost. For Alloy C22, TiAlloy quotes hastelloy c22 price or alloy c22 price only after form, dimensions, volume, certificate and shipping destination are known.
Delivery lead times need to be practical and considered relative to market conditions, transport time, manufacturing time, priority, and manufacturer capability. Simply put, a lead time stated before ASTM standard, sizes, inspection, and export route are defined can create delays later.
While raw nickel prices can be used for reference, they do not reflect finished alloy C22 pipe, tube, plate, sheet, bar or round bar pricing. A simple trade-off applies: an RFQ that initially looks slower can prevent 7-day and 14-day QA issues down the road.
C22 RFQ Standards Map
Consult the C22 RFQ Standards Map before getting in touch with TiAlloy. It helps customers separate composition, supplier, certificate and specification questions from industrial inquiries into well-formed business requests.
01
Select Form
Select your form: plate, sheet, tube/pipe or rod/bar.
02
Confirm Standard
Confirm standard: ASTM B574, B575, B619, B622 or B626.
03
Attach Specs
Attach size, quantity, tolerance, surface, drawing and destination.
04
Specify QA
Specify MTC, PMI, EN 10204 and third-party inspection requirements.
05
Submit RFQ
Submit your quotation request through TiAlloy, with no presumptions regarding existing stock.
Alloy C22 / UNS N06022 Digital Tool Center
Deploy our precision engineering utilities to streamline RFQ processing, verify compliance documents, and map standards instantly.
SYS.MOD // 01
RFQ Readiness Checker
Evaluate your RFQ completeness prior to submission. Eliminate communication delays by auditing required parameters instantly.
SYS.MOD // 02
Document Package Checklist
Verify your compliance needs. Cross-check EN 10204 3.1/3.2 certificates, PMI requirements, and NDE reporting scopes.
SYS.MOD // 03
C22 Service Fit Matrix
Cross-reference material form capabilities with suitable industrial environments, corrosive media, and thermal conditions.
SYS.MOD // 04
C22 RFQ Standards Map
Navigate the complex web of ASTM/ASME specifications for accurate pricing, production routing, and technical alignment.
QUOTATION INTELLIGENCE
Alloy C22 Quotation FAQ
Alloy C22 is a common search term often referenced as Hastelloy C22, hastelloy c-22, UNS N06022, and W.Nr. 2.4602. Since HASTELLOY is a registered trademark of Haynes International, TiAlloy uses Alloy C22 / UNS N06022 as the standard material terminology while still helping buyers identify the grade. Submit a quotation request specifying UNS N06022, the relevant standard and the desired product form.
TiAlloy can discuss tube/pipe, plate/sheet, and rod/bar in the C22 grade. Your RFQ should indicate the product standard, for example ASTM B622 for B622 tubes/pipes, ASTM B619 for welded tubes/pipes, ASTM B575 for plates/sheets, and ASTM B574 for rods/bars. TiAlloy then confirms the details through its production and ISO 9001 quality procedures.
No. C22 is not always the appropriate choice; it can perform well for certain oxidizing environments, combined acids, and localized corrosion risks. However, 316L, C276 or another nickel alloy may be a better selection for various media or temperature ranges. Please send service details, temperature, °C range and failure history for comparison.
A predetermined price list will not be practical without specification of form, volume, dimensions, shipping terms, inspection type, PMI and the intended port of discharge. Once the RFQ package is clear, TiAlloy can generate a specific quotation. While raw nickel pricing can offer context, it does not directly translate into finished Alloy C22 prices.
Include grade, form factor, relevant ASTM standard, precise measurements, volume, acceptable deviations, surface finishes, purpose of use, ambient temperature and corrosive medium, applicable certificates, PMI or third-party inspection, the destination country, and desired lead time. This level of detail equips TiAlloy to consult its production, quality assurance and logistics divisions to confirm requirements.
