Inconel 625 N06625 Nickel Alloy Forged Discs Chemical Processing Reactors Parts
Inconel 625 is a nickel-chromium-molybdenum alloy known for its high strength, outstanding fabricability, and excellent corrosion resistance. This makes it well-suited for applications in harsh environments such as the aerospace, chemical processing, and marine industries. Forging discs made from Inconel 625 often find usage in gas turbines, heat exchangers, and various types of industrial equipment that operate under high stress and in corrosive environments. Here are some detailed characteristics and common specifications for Inconel 625 forging discs:
- Nickel (Ni): Approximately 58%
- Chromium (Cr): 20% - 23%
- Molybdenum (Mo): 8% - 10%
- Iron (Fe): Up to 5%
- Niobium (Nb) + Tantalum (Ta): 3.15% - 4.15%
- Plus traces of aluminum, titanium, carbon, and silicon
- Density: About 8.44 g/cm³
- Melting Point: 1290°C - 1350°C (2350°F - 2460°F)
- Thermal Conductivity: Varies with temperature, at 100°C approx. 9.8 W/m·K
- Tensile Strength: Typically in the range of 690 MPa to 1,035 MPa, depending on the form and treatment
- Yield Strength: Can vary, but typically starts around 415 MPa in annealed condition
- Hardness: Can vary; usually more focus is on yield and tensile strength for Inconel alloys
- Corrosion Resistance: Exceptional resistance to a wide range of corrosive media, including seawater and acidic environments.
- Oxidation Resistance: Inconel 625 can withstand a wide range of temperatures without oxidizing, up to about 980°C (1800°F).
- Strength: High tensile, creep, and rupture strength, making it suitable for high temperature applications.
- Weldability: Excellent weldability, which is particularly important for complex shapes like forging discs.
Specifications and Standards
- ASTM B446: This specification covers the chemical, mechanical, and metallurgical requirements for nickel-chromium-molybdenum-columbium alloys (UNS N06625) in the form of rods, bars, and forging stocks.
- AMS 5666: Covering nickel alloy, corrosion and heat-resistant, bars, forgings, and rings.
- Aerospace: Used in turbine blades, seals, and combustors.
- Marine: Propeller blades for ships, submarine components.
- Chemical Processing: Equipment components in contact with acidic and alkali media.
- Oil & Gas: Components exposed to high acidic environments, such as sour gas fields.
Bear in mind, the forging process of Inconel 625 enhances its mechanical properties, making the material more suitable for demanding applications. These forging discs can be custom made to specified dimensions as required for specific applications.
The following table lists only some of the grades:
| Grade | UNS | DIN |
| Monel 400 | N04400 | W.Nr. 2.4360 |
| Monel K-500 | N05500 | W.Nr. 2.4375 |
| Inconel 625 | N06625 | W.Nr. 2.4856 |
| Inconel 718 | N07718 | W.Nr. 2.4668 |
| Inconel X-750 | N07750 | W. Nr. 2.4669 |
| Inconel 600 | N06600 | W.Nr. 2.4816 |
| Inconel 601 | N06601 | W.Nr. 2.4851 |
| Incoloy 825 | N08825 | W.Nr. 2.4858 |
| Incoloy A-286 | S66286 | W.Nr.1.4980 |
| Hastelloy C-276 | N10276 | W.Nr.2.4819 |
| Hastelloy C-22 | N06022 | W.Nr.2.4602 |
| Hastelloy C-4 | N06455 | W.Nr.2.4610 |
| Hastelloy B-3 | N10675 | W.Nr.2.4600 |
| Hastelloy X | N06002 | W.Nr.2.4665 |
| Hastelloy B-2 | N10665 | W.Nr.2.4617 |
