Controlled selection signals
Alloy Comparison Tool for Technical Buyers
Compare selected nickel alloy, duplex, super duplex, and stainless steel grades in one procurement-oriented view. The tool is intentionally limited to high-level selection signals and documented supply considerations sourced from controlled manufacturer references; it is a preparation aid, not a material approval, corrosion prediction, or substitute for a project specification and qualified engineering review.
The tool compares verified high-level selection profiles and source links. It intentionally does not present a material as approved for a project service or substitution.
| Comparison point | Inconel 625 UNS N06625 | Super Duplex 2507 UNS S32750 | Stainless Steel 316L UNS S31603 |
|---|---|---|---|
| Alloy family | Nickel-chromium-molybdenum-niobium alloy | Super duplex stainless steel | Austenitic stainless steel |
| Selection signal | Often reviewed for demanding chloride, seawater, mixed-corrosion, and elevated-temperature service where the engineering basis supports a nickel alloy route. | Often reviewed for highly corrosive chloride-bearing, seawater, and demanding process applications where super-duplex properties are part of the engineering basis. | Often reviewed as a low-carbon molybdenum-bearing austenitic stainless route for defined process and general corrosion applications. |
| Service considerations | Confirm medium, temperature, pressure-code requirements, product form, fabrication, and corrosion mechanism before approval. | Review service chemistry, temperature, weld route, product form, pressure boundary, and any NACE or project requirements before selection. | Chlorides, temperature, crevices, stress, fabrication, and the actual service chemistry can require a different alloy family or project control. |
| Procurement focus | State UNS N06625, ASTM or ASME material route, component standard, heat traceability, PMI, MTC, and any project testing. | State UNS S32750, ASTM A182 or A815 route as applicable, ASME dimensions, PMI, IGC or NACE review where required, and certificate expectations. | State UNS S31603, ASTM A182 or A403 route as applicable, dimensions, PMI, MTC, IGC review where required, and document release needs. |
| RTI material page | Open material data | Open material data | Open material data |
