what is UNS N06625 material?
INCONEL® nickel-chromium alloy 625 (UNS N06625/W.Nr. 2.4856) is used for its high strength, excellent fabricability (including joining), and outstanding corrosion resistance. Service temperatures range from cryogenic to 1800°F (982°C). It can be processed into various practical product forms, including plates, coils, tubes, bars, and wires. For detailed chemical composition and free samples, please contact our factory immediately.
What material is equivalent to uns N06625?
UNS N06625 is the Unified Numbering System (UNS) designation for the commonly used nickel-based superalloy Inconel 625, which is also known as W.Nr. 2.4856 in European standards. This alloy is frequently used in aerospace, chemical, and marine applications. Its main equivalent grades include Alloy 625, Haynes 625, and various ASTM/AMS standards, such as ASTM B443/B446, AMS 5599, and AMS 5666.
What standards does UNS N06625 conform to?
ASTM B444 / ASME SB444 – Seamless tubing
ASTM B446 / ASME SB446 – Round bars and rods
ASTM B443 – Plates and sheets
UNS N06625 chemical composition
| Grade | C | Mn | Si | Fe | S | Cr2 | Al-Ti | Ni | |
| 625 | min. | – | – | – | – | – | 20.0 | – | 58.0 |
| max. | 0.10 | 0.50 | 0.50 | 5.0 | 0.015 | 23.0 | 0.40 | – | |
Mechanical Characteristics of Alloy 625 Pipe
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 625 | Psi – 1,35,000 , MPa -930 | Psi – 75,000 , MPa – 517 | 42.5 | – | – |
Can UNS N06625 be heat treated?
UNS N06625 is solid solution strengthened an cannot be hardened like age-hardenable nickel alloys. However, it can be annealed at 1175–1200°C for stress relief, which:Reduces residual stresses from welding or fabrication,Improves ductility,Maintains corrosion resistance and fatigue performance.
Can UNS N06625 be welded?
Yes. UNS N06625 is weldable using GTAW, GMAW, and SMAW methods. Post-weld stress relief annealing is recommended to prevent residual stress-induced cracking and maintain corrosion resistance.
What are the typical applications of UNS N06625?
Aerospace components exposed to high temperatures
Chemical and petrochemical process lines handling corrosive media
Marine and seawater systems such as offshore platforms and piping
Pressure vessels and heat exchangers in power plants
High-temperature valves and fasteners
If you have any requirements for the above items, please feel free to place an order. GNEE has a large inventory of Inconel 625 products for you to choose from. These can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
