INCONEL 625 (UNS N06625): Composition, Features, and Applications
1. Chemical Composition of INCONEL 625
| Element | Content (%) |
|---|---|
| Nickel (Ni) | ≥58 |
| Chromium (Cr) | 20.0–23.0 |
| Molybdenum (Mo) | 8.0–10.0 |
| Iron (Fe) | ≤5.0 (balance) |
| Niobium (Nb) + Tantalum (Ta) | 3.15–4.15 |
| Manganese (Mn) | ≤0.50 |
| Silicon (Si) | ≤0.50 |
| Aluminum (Al) | ≤0.40 |
| Titanium (Ti) | ≤0.40 |
| Carbon (C) | ≤0.10 |
| Phosphorus (P) | ≤0.015 |
| Sulfur (S) | ≤0.015 |
2. Key Features of INCONEL 625
Excellent Corrosion Resistance
Outstanding resistance to both oxidizing and reducing acids, including nitric, phosphoric, sulfuric, and hydrofluoric acids.
Exceptional High-Temperature Strength
Maintains high strength and creep resistance at elevated temperatures up to 980°C (1800°F).
Superior Resistance to Chloride Stress Corrosion Cracking
Ideal for marine environments, salt spray conditions, and high-chloride applications.
Good Weldability
Can be welded by various methods without post-weld heat treatment.
3. Applications of INCONEL 625
Chemical Processing Equipment: Heat exchangers, reactors, tower internals, nozzles
Marine Engineering: Seawater heat exchangers, piping systems, fasteners
Aerospace Industry: Aircraft exhaust systems, rocket engine components, turbine blades
Nuclear Industry: Reactor cooling systems, control rod components
Pollution Control Equipment: Flue gas desulfurization systems, waste gas treatment units
4. SSM's INCONEL 625 Products
SSM offers a full range of INCONEL 625 alloy products, including:
Pipes and Fittings: Seamless pipes, elbows, tees, reducers, stub ends, and more
Flanges: Various types of flanges conforming to ASTM B564
Fasteners: Bolts, nuts, washers, etc.
Plates and Bars: Cold-rolled plates, hot-rolled plates, round bars, hex bars
Custom Machined Components: Made to drawing or per customer specifications
For detailed datasheets or a quotation, please feel free to contact SSM. We provide high-quality materials with third-party inspection support.
