Nickel Alloys for Chemical Processing Equipment
Select nickel alloys for chemical processing equipment. Compare Hastelloy C-276, C-22, Incoloy 825, Inconel 625, Nickel 200/201, product forms and RFQ requirements.
Send RFQThe right alloy depends on medium, concentration, temperature, pressure, chloride level, oxidizing or reducing conditions, fabrication method and inspection requirements.
Recommended Alloys
| Alloy | Common Service | Why It Is Considered | Product Page |
|---|---|---|---|
| Hastelloy C-276 | Mixed acids, chlorides, FGD and severe corrosion | Excellent resistance to localized corrosion and many aggressive chemical media | View product |
| Hastelloy C-22 | Oxidizing acids, wet chlorine, chloride-bearing media | Strong oxidizing-media resistance and crevice corrosion resistance | View product |
| Incoloy 825 | Sulfuric acid, phosphoric acid, chemical equipment | Nickel-iron-chromium alloy with molybdenum and copper | View product |
| Inconel 625 | Chloride, seawater and chemical processing piping | High nickel-chromium-molybdenum alloy for broad corrosion resistance | View product |
| Nickel 200 / Nickel 201 | Caustic soda and alkaline environments | Commercially pure nickel options selected by service temperature | View product |
Selection Guide
| If Your Project Needs | Start With | RFQ Notes |
|---|---|---|
| Severe mixed acid plus chlorides | Start with Hastelloy C-276 or C-22 | Confirm oxidizing/reducing condition, pH, chlorides and temperature. |
| Sulfuric or phosphoric acid | Start with Incoloy 825 | Provide concentration, temperature and impurities such as chlorides or fluorides. |
| Caustic alkali service | Start with Nickel 200 or Nickel 201 | Use Nickel 201 when high-temperature pure nickel service is required. |
| Chemical piping with chloride exposure | Compare Inconel 625, Incoloy 825 and C-276 | Choose based on corrosion severity, pressure and budget. |
Common Product Forms
| Product Form | Typical Materials | Related Landing Page |
|---|---|---|
| Pipe / Tube | Inconel 625, Incoloy 825, Hastelloy C-276 | Related page |
| Plate / Sheet | Hastelloy C-276, Nickel 200, Incoloy 825 | Related page |
| Bar / Rod | Inconel 625, Monel 400, Hastelloy alloys | 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 chemical processing equipment?
There is no single best alloy for all chemical processing equipment. Hastelloy C-276, C-22, Incoloy 825, Inconel 625 and Nickel 200/201 are common starting points depending on acid type, chloride level, concentration, temperature and pressure.
Is Incoloy 825 good for sulfuric acid?
Incoloy 825 is commonly considered for sulfuric acid and phosphoric acid service because it contains nickel, chromium, molybdenum and copper, but final suitability depends on concentration, temperature and contaminants.
When should I choose Hastelloy C-276?
Hastelloy C-276 is often selected for severe corrosion involving chlorides, mixed acids, reducing media or FGD scrubber environments where standard stainless steels are not enough.
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