Nickel Alloys and Stainless Steels for Heat Exchangers
Select nickel alloys and stainless steels for heat exchangers. Compare Inconel 625, Incoloy 825, Hastelloy C-276, Duplex 2507, 2205, pipe, tube, plate and RFQ details.
Send RFQFor quotation, buyers should define pipe or tube size, wall thickness, schedule, standard, heat treatment, inspection requirement, quantity and service medium.
Recommended Alloys
| Alloy | Common Service | Why It Is Considered | Product Page |
|---|---|---|---|
| Inconel 625 | Seawater, chloride and heat exchanger tubes | Strong corrosion resistance with good strength | View product |
| Incoloy 825 | Acid service heat exchangers | Good sulfuric and phosphoric acid resistance | View product |
| Hastelloy C-276 | Severe acid/chloride heat exchanger parts | High resistance to aggressive mixed media | View product |
| Duplex 2507 | High-strength chloride systems | Super duplex option for seawater and desalination | View product |
| Duplex 2205 | Moderate chloride process water | Cost-effective duplex stainless steel | View product |
Selection Guide
| If Your Project Needs | Start With | RFQ Notes |
|---|---|---|
| Seawater-cooled exchanger | Start with Inconel 625, Duplex 2507 or 254SMO | Confirm chloride level, velocity, crevice design and cleaning method. |
| Acid process stream | Start with Incoloy 825 or Hastelloy C-276 | Provide acid type, concentration, temperature and contaminants. |
| Moderate chloride water | Compare Duplex 2205 and Duplex 2507 | Choose based on chloride severity and strength requirement. |
| Severe mixed corrosion | Start with Hastelloy C-276 | Use when stainless steels and lower nickel alloys are not enough. |
Common Product Forms
| Product Form | Typical Materials | Related Landing Page |
|---|---|---|
| Pipe / Tube | Inconel 625, Incoloy 825, Duplex 2507 | Related page |
| Plate / Sheet | Hastelloy C-276, 254SMO, Duplex grades | Related page |
| Bar / Components | Inconel 625, Duplex 2507, 17-4PH | 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 materials are used for heat exchanger tubes?
Common heat exchanger tube materials include stainless steels, duplex stainless steels, super duplex stainless steels and nickel alloys such as Inconel 625, Incoloy 825 and Hastelloy C-276 depending on corrosion severity.
Which alloy is used for seawater heat exchangers?
Inconel 625, Duplex 2507 and 254SMO are common candidates for seawater heat exchanger service. Final selection depends on chloride level, velocity, temperature, crevice conditions and project standard.
What RFQ details are needed for heat exchanger tube material?
Send alloy grade, pipe or tube standard, OD, wall thickness, length, quantity, condition, inspection requirement, medium, temperature and pressure.
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