ASTM B574 Alloy C22 Round Bar, Solution Annealed | UNS N06022

Shaanxi Shangyou Stainless Steel Co., Ltd. supplies astm b574 alloy c22 round bar, solution annealed | uns n06022 for buyers whose primary search intent is corrosion-resistant machined valve, pump and fastener stock, not generic stainless or nickel-alloy stock. The page should be quoted against the selected standard edition, the equipment or component drawing and the governing design code. Solution-annealed Alloy C22 rod and round bar to ASTM B574 for machined components exposed to severe mixed chemical environments.

The material decision should start with service conditions. Ni-Cr-Mo-W alloy with low carbon, combining oxidizing resistance with strong pitting and crevice-corrosion performance. Use C276 bar when its reducing-acid history fits better; use C22 where higher chromium and mixed oxidizing conditions are important. This comparison belongs in the enquiry stage because a higher alloy name does not automatically deliver the lowest life-cycle risk.

A complete RFQ needs product form, grade/UNS, ordered condition, dimensional basis, tolerances, quantity and inspection level. Specify diameter, tolerance, length, straightness, surface, machining allowance and whether forged/turned or cold-drawn finish is required. For pressure-containing products, the material standard controls product quality; it does not replace pressure-design calculations, corrosion allowance or code approval.

Manufacturing and documentation must remain connected. Hot working or cold finishing, solution annealing, straightening and surface finishing. Cropped pieces must retain heat identity. The baseline verification plan is: MTC, chemistry/mechanical tests, PMI, dimensions/straightness, optional UT and surface PT for critical machined parts. Any supplementary requirement—PMI extent, UT class, eddy-current acceptance, corrosion testing, grain size, roughness, cleanliness or third-party inspection—must appear in the PO before production.

Fabrication guidance: Nickel alloys work harden rapidly. Use rigid setups, positive tooling and continuous cutting; validate thread rolling and cold forming before production. Selection boundary: Nominal alloy grade does not establish finished-part performance. Account for stress concentration, surface finish, galling, crevices and galvanic coupling. Buyers should provide fluid composition, maximum and minimum temperature, pressure, design life, fabrication route and applicable code so the quotation can separate mandatory requirements from optional controls.

Standards, Dimensions and Supply Definition

Material and Selection Markers

Use note: Values above are concise identification/selection markers, not a replacement for the ordered ASTM/AWS chemistry table or the MTC.

Candidate Applications

• Valve stems.
• Pump shafts.
• Fasteners.
• Mixer and agitator components.

Buyer Decision Boundary

Use C276 bar when its reducing-acid history fits better; use C22 where higher chromium and mixed oxidizing conditions are important.

Processing, Inspection and Documentation

• Manufacturing: Hot working or cold finishing, solution annealing, straightening and surface finishing. Cropped pieces must retain heat identity.
• Fabrication: Nickel alloys work harden rapidly. Use rigid setups, positive tooling and continuous cutting; validate thread rolling and cold forming before production.
• Inspection: MTC, chemistry/mechanical tests, PMI, dimensions/straightness, optional UT and surface PT for critical machined parts.
• Traceability: Keep heat/lot identity through cutting, machining, bending, welding, testing and packing.
• Documentation: Confirm MTC type, test reports, packing list, country-of-origin statement and third-party inspection before production.

RFQ Checklist

• Standard and adopted edition: ASTM B574
• Grade / UNS: Alloy C22 / N06022
• Form and route: Rod and round bar
• Dimensions, tolerances, quantity and unit basis
• Delivery/heat-treatment condition and surface/end finish
• Design code, service fluid/atmosphere, pressure and temperature
• Inspection/NDE, acceptance criteria, MTC and third-party witness points
• Marking, preservation, packing and delivery destination

Inquiry CTA

Frequently Asked Questions

1. What does ASTM B574 cover for this product? Solution-annealed Alloy C22 rod and round bar to ASTM B574 for machined components exposed to severe mixed chemical environments. Always purchase to the edition adopted by the contract or project specification.
2. Is this product seamless, welded, forged, rolled or drawn? The PO must state the required route exactly: Rod and round bar. Do not rely on a product photograph or a family name to establish the route.
3. How should buyers select Alloy C22? Ni-Cr-Mo-W alloy with low carbon, combining oxidizing resistance with strong pitting and crevice-corrosion performance. Use C276 bar when its reducing-acid history fits better; use C22 where higher chromium and mixed oxidizing conditions are important.
4. Which dimensions must be included in the RFQ? Specify diameter, tolerance, length, straightness, surface, machining allowance and whether forged/turned or cold-drawn finish is required. Add quantity, unit basis, tolerances and any drawing-controlled geometry.
5. What heat-treatment or delivery condition is required? Solution annealed and descaled; hot-finished or cold-finished route and straightness to PO. The MTC and heat-treatment records should use the same grade and condition language as the PO.
6. Which inspection documents can be requested? MTC, chemistry/mechanical tests, PMI, dimensions/straightness, optional UT and surface PT for critical machined parts. The final inspection scope must be agreed before order placement.
7. Is it suitable for the intended corrosive or high-temperature service? Nominal alloy grade does not establish finished-part performance. Account for stress concentration, surface finish, galling, crevices and galvanic coupling. A material engineer should approve the final choice using actual service data.
8. What fabrication issues should be addressed? Nickel alloys work harden rapidly. Use rigid setups, positive tooling and continuous cutting; validate thread rolling and cold forming before production. Use a qualified procedure and preserve heat/lot traceability after cutting or fabrication.
9. What are typical applications? Common candidate applications include valve stems, pump shafts, fasteners, mixer and agitator components. These examples are not blanket design approvals.
10. What information is needed for a firm quotation? Send standard and edition, grade/UNS, form, dimensions, condition, quantity, delivery destination, inspection/NDE, documentation, packing and any third-party inspection or code requirement.