INCONEL Alloy 617,UNS N06617; ASME SB-166,1

### **Product Introduction: INCONEL® Alloy 617 (UNS N06617)** **INCONEL® Alloy 617** is a premier, solid-solution strengthened nickel-chromium-cobalt-molybdenum alloy engineered for exceptional performance in the most extreme high-temperature environments. It is renowned for its outstanding combination of **high-temperature strength, exceptional oxidation resistance, and excellent resistance to a wide range of corrosive media**. A key characteristic of Alloy 617 is its remarkable **long-term thermal stability**, resisting the formation of deleterious phases during prolonged exposure at high temperatures. Its approval under the **ASME Boiler and Pressure Vessel Code** for nuclear and high-temperature service makes it a code-approved material for critical pressure-boundary components, underscoring its reliability for the most demanding applications in power generation and aerospace. --- ### **International Standards & Material Equivalents** INCONEL Alloy 617 is covered by a comprehensive set of international standards for aerospace, pressure vessel, and general engineering use. | Standard Type | Standard Number | Title / Product Form | | :--- | :--- | :--- | | **UNS (USA)** | **N06617** | **INCONEL Alloy 617** | | **ASTM** | **B166** | Rod, Bar, and Wire | | **ASME** | **SB-166** | Rod, Bar, and Wire (Pressure Vessel Code) | | **ASME Boiler Code** | **Section I, VIII** | Approved for pressure-boundary components | | **AMS (Aerospace)** | **5887** | Sheet, Strip, and Plate | | **AMS (Aerospace)** | **5888** | Bar and Wire (Solution Heat Treated) | | **AMS (Aerospace)** | **5889** | Seamless Tube | | **DIN (Germany)** | 17744 | NiCr23Co12Mo | | **Werkstoff Nr.** | **2.4663** | **2.4663** | > **Note:** INCONEL® is a registered trademark of Special Metals Corporation. The primary identifiers are **UNS N06617** and **Werkstoff 2.4663**. --- ### **Chemical Composition** The composition is a complex balance designed for maximum high-temperature performance, with cobalt and molybdenum providing superior solid-solution strengthening. | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 44.5 min. | | **Chromium (Cr)** | 20.0 - 24.0 | | **Cobalt (Co)** | 10.0 - 15.0 | | **Molybdenum (Mo)** | 8.0 - 10.0 | | **Aluminum (Al)** | 0.8 - 1.5 | | **Carbon (C)** | 0.05 - 0.15 | | **Iron (Fe)** | 3.0 max. | | **Manganese (Mn)** | 1.0 max. | | **Silicon (Si)** | 1.0 max. | | **Titanium (Ti)** | 0.6 max. | | **Copper (Cu)** | 0.5 max. | | **Boron (B)** | 0.006 max. | --- ### **Physical Properties** Alloy 617 exhibits physical properties suitable for severe thermal cycling and high-temperature service. | Property | Value | | :--- | :--- | | **Density** | 8.36 g/cm³ (0.302 lb/in³) | | **Melting Point** | 1332 - 1377 °C (2430 - 2510 °F) | | **Thermal Conductivity** | 13.9 W/m·K (at 20°C) | | **Electrical Resistivity** | 1.25 μΩ·m (at 20°C) | | **Modulus of Elasticity** | 211 GPa (30.6 x 10⁶ psi) | | **Coefficient of Thermal Expansion** | 12.8 μm/m·°C (20-100°C) | | **Magnetic Response** | Essentially non-magnetic | --- ### **Mechanical Properties (Typical for Solution Annealed Condition)** The alloy retains a significant portion of its strength at elevated temperatures, demonstrating excellent creep and rupture strength. | Property | Value (Room Temperature, Solution Annealed) | | :--- | :--- | | **Tensile Strength** | 730 MPa (106 ksi) | | **Yield Strength (0.2% Offset)** | 310 MPa (45 ksi) | | **Elongation** | 45% | | **Hardness (Rockwell B)** | 85 HRB | --- ### **Key Characteristics & Advantages** 1. **Exceptional High-Temperature Strength:** Maintains high mechanical strength, creep strength, and rupture strength at temperatures up to **1200°C (2200°F)**. 2. **Outstanding Oxidation Resistance:** The high chromium content provides excellent resistance to scaling and oxidation in air and other oxidizing atmospheres. 3. **Excellent Resistance to Complex Environments:** Demonstrates good performance in carburizing, sulfidizing, and chlorine-containing atmospheres. 4. **Long-Term Thermal Stability:** Resists embrittlement from phase precipitation after long-term exposure at high temperatures. 5. **Code Compliance for Critical Service:** Approval under **ASME Boiler Code Sections I and VIII** makes it a trusted choice for nuclear and conventional power plant components. --- ### **Product Applications** INCONEL Alloy 617 is specified for the most critical high-temperature components across multiple industries. * **Advanced Power Generation:** * **Heat exchangers for High-Temperature Gas-Cooled Reactors (HTGRs).** * Combustion cans, transition ducts, and turbine components in land-based gas turbines. * Ducting for advanced ultra-supercritical (A-USC) coal-fired power plants. * **Aerospace & Industrial Gas Turbines:** * **Combustion liners,** afterburner components, and spray bars. * Hot gas path components requiring high-temperature strength and oxidation resistance. * **Thermal Processing:** * **Radiant tubes,** retorts, and furnace fixtures for high-temperature heat treating. * Basket and trays for brazing and sintering. * **Petrochemical Processing:** * Components in steam/hydrocarbon reformer and catalytic cracking units. ### **Summary** **INCONEL Alloy 617 (UNS N06617)** is a premier, solution-strengthened nickel-base superalloy engineered for extreme service. Its robust composition provides an unmatched balance of **creep strength, oxidation resistance, and thermal stability at temperatures exceeding 1100°C**. Governed by critical standards like **ASME SB-166** and approved for use in **ASME Boiler Code Sections I and VIII**, it is a foundational material for next-generation energy systems, including nuclear and fossil fuel power plants, as well as for high-performance aerospace and industrial gas turbines. It is the material of choice where long-term reliability under extreme thermal and mechanical stress is non-negotiable.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3300 gallon liquid totes Special package is available on request.