What is nickel alloy 625 material?
Nickel Alloy 625 (UNS N06625, often called Inconel 625) is a high-strength, corrosion-resistant nickel-based superalloy, alloyed with chromium, molybdenum, and niobium-tantalum, giving it excellent resistance to extreme temperatures (cryogenic to 1800°F) and harsh environments, making it ideal for marine, aerospace (jet engines), chemical processing, and nuclear applications due to its strength, fabricability, and resistance to pitting, crevice corrosion, and chloride stress corrosion cracking.
What is the UNS N06625 material specification?
UNS N06625 is the Unified Numbering System designation for Inconel 625 alloy. Inconel 625 is a high-strength, corrosion-resistant nickel-chromium-molybdenum alloy that exhibits excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in harsh environments such as seawater, acids, and high-temperature gases. Its main components include high levels of nickel (minimum 58%), chromium (20-23%), molybdenum (8-10%), and niobium (3.15-4.15%). It achieves high strength without heat treatment, making it ideal for aerospace, chemical, and marine applications.
Inconel 625 / Nickel Alloy 625 / UNS N06625
Inconel Alloy 625 Chemical Composition
| Element | Content |
|---|---|
| Nickel (Ni) | 58% min |
| Chromium (Cr) | 20% to 23% |
| Molybdenum (Mo) | 8% to 10% |
| Columbium + Tantalum (Nb + Ta) | 3.15% to 4.15% |
| Iron (Fe) | 5.0% max |
| Carbon (C) | 0.10% max |
| Manganese (Mn) | 0.50% max |
ASTM B444 UNS N06625 Standard Specification
| Grade | Heat treatment condition | Typical service temperature note | Typical buyer focus at receiving |
|---|---|---|---|
| Grade 1 | Annealed | Normally employed up to 1100℉ (593℃) | Chemistry + mechanical results + traceability match PO line |
| Grade 2 | Solution annealed | Normally employed above 1100℉ (593℃) where creep/rupture resistance is required | Heat treatment statement + mechanical values + any specified inspection scope |
Mechanical Strength for Nickel Alloy 625
| Grade | Heat treatment (as stated) | Tensile strength (min) | Yield strength (min) | Elongation (min) |
|---|---|---|---|---|
| Grade 1 | Annealed (≥ 871℃ / 1600℉) | 827 MPa (120 ksi) | 414 MPa (60 ksi) | 30% |
| Grade 2 | Solution annealed | 690 MPa (100 ksi) | 276 MPa (40 ksi) | 30% |
625 Alloy Applications
Common uses for Alloy 625 include springs, seals, bellows for submersible control devices, cable connectors, fasteners, flexible components, and marine instrument parts. It is available in various forms including plates, bars, tubes, and forgings. The alloy has similar processing characteristics to typical nickel alloys, is easily formed, and can be welded using a variety of techniques.
Inconel 625 suppliers
At GNEE, Inconel 625 is available in various forms to meet diverse industrial needs:
Plates and Sheets (cold rolled and hot rolled)
Bars and Rods (round, square, hexagonal)
Tubes (seamless and welded)
Wires and Strips (for springs, fasteners, electrical applications)
Forgings and Custom Parts (according to drawings or specifications)
Testing and Documentation: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Testing Reports, Non-Destructive Testing Reports, PMI Test Reports, Visual Inspection Reports, Third-Party Inspection Reports, NABL Certified Laboratory Reports.
Packaging: Wooden crates, bubble wrap, steel strapping, or packaged according to customer requirements.
