Alloys for FGD Scrubber and Flue Gas Desulfurization
Select alloys for FGD scrubbers and flue gas desulfurization. Compare Hastelloy C-276, C-22, Inconel 625, 254SMO, duplex grades, plate, pipe and RFQ details.
Send RFQFGD material selection should account for chloride concentration, pH, temperature, solids, abrasion, stagnant zones, crevice design, welding, lining or overlay strategy and the requested equipment section.
Recommended Alloys
| Alloy | Common Service | Why It Is Considered | Product Page |
|---|---|---|---|
| Hastelloy C-276 | Severe FGD slurry, wet scrubbers and mixed acids | High resistance to localized corrosion in aggressive chloride-bearing media | View product |
| Hastelloy C-22 | Oxidizing chloride and wet chlorine conditions | Strong crevice and pitting resistance in oxidizing environments | View product |
| Inconel 625 | FGD piping, nozzles, weld overlay and corrosion-resistant parts | Nickel-chromium-molybdenum alloy with broad chloride resistance | View product |
| 254SMO | Chloride-bearing process streams and moderate FGD environments | Super austenitic stainless steel with high molybdenum content | View product |
| Duplex 2507 | Selected high-strength chloride service | Super duplex stainless steel for chloride resistance where chemistry allows | View product |
Selection Guide
| If Your Project Needs | Start With | RFQ Notes |
|---|---|---|
| High chloride plus low pH slurry | Start with Hastelloy C-276 or C-22 | Confirm chloride, pH, temperature, solids and oxidizing condition. |
| FGD piping or nozzles | Compare Inconel 625 and Hastelloy C-276 | Specify pipe standard, wall thickness, welding and inspection requirements. |
| Moderate chloride process areas | Review 254SMO or Duplex 2507 | Use only after checking crevice risk and service chemistry. |
| Repair, overlay or lining strategy | Consider Inconel 625 or high-nickel alloy options | Provide base metal, drawing, thickness and welding specification. |
Common Product Forms
| Product Form | Typical Materials | Related Landing Page |
|---|---|---|
| Plate / Sheet | Hastelloy C-276, C-22, 254SMO | Related page |
| Pipe / Tube | Inconel 625, Hastelloy C-276, Duplex 2507 | Related page |
| Flange / Fittings | Inconel 625, C-276, Duplex 2507 | Related page |
Standards and Inspection Notes
Standards
Confirm ASTM, ASME, AMS, NACE, EN or project-specific standards before quotation. Material availability and inspection scope depend on the requested product form and condition.
Service Conditions
Include medium, concentration, chloride level, pH, temperature, pressure, flow condition and whether crevice corrosion, welding or stress is expected.
Inspection
Available quotation options may include EN 10204 3.1 MTC, PMI, dimensional inspection, mechanical tests, UT or third-party inspection depending on product form.
Application FAQ
What alloy is best for FGD scrubbers?
Hastelloy C-276 and Hastelloy C-22 are common starting points for severe wet FGD scrubber corrosion. Inconel 625, 254SMO and Duplex 2507 may also be considered depending on chloride, pH, temperature and equipment area.
Is 254SMO suitable for FGD service?
254SMO can be considered for some chloride-bearing FGD and process environments, but severe low-pH slurry, stagnant zones or high crevice risk may require higher nickel alloys such as C-276 or C-22.
What RFQ details are needed for FGD alloy materials?
Send medium, chloride level, pH, temperature, solids or abrasion notes, product form, size, standard, quantity, inspection requirement and whether the material is for plate, pipe, fittings, overlay or repair.
Related Material Links
Request an Application-Based Alloy Quote
Send us the service medium, concentration, temperature, pressure, alloy grade if known, product form, size, quantity, material condition, applicable standard, inspection requirement and destination country.
- Material need: application, medium and target alloy family
- Product form: pipe, tube, plate, sheet, bar, wire, flange, fitting or forging
- Inspection: MTC, PMI, UT, mechanical tests or third-party inspection
- Delivery: destination country, quantity and required lead time