Alloy 617,Inconel 617,UNS N06617,EFORU

### **Introduction to Alloy 617 (Inconel 617 / UNS N06617)

** Alloy 617, commonly known by its trade name Inconel 617 and unified numbering system code UNS N06617, is a nickel-chromium-cobalt-molybdenum alloy renowned for its exceptional combination of high-temperature strength, outstanding oxidation resistance, and excellent fabricability. It is a solid-solution strengthened, austenitic alloy designed to perform in the most demanding environments encountered in aerospace, power generation, and chemical processing industries. Its key characteristic is the ability to maintain structural integrity and resist degradation under extreme temperatures, corrosive atmospheres, and high-pressure conditions, making it a premier material for critical high-temperature components. 

### **Introduction to Alloy 617 (Inconel 617 / UNS N06617)

** Alloy 617, commonly known by its trade name Inconel 617 and unified numbering system code UNS N06617, is a nickel-chromium-cobalt-molybdenum alloy renowned for its exceptional combination of high-temperature strength, outstanding oxidation resistance, and excellent fabricability. It is a solid-solution strengthened, austenitic alloy designed to perform in the most demanding environments encountered in aerospace, power generation, and chemical processing industries. Its key characteristic is the ability to maintain structural integrity and resist degradation under extreme temperatures, corrosive atmospheres, and high-pressure conditions, making it a premier material for critical high-temperature components. 

 --- ### **Chemical Composition** 

 The high-performance properties of Alloy 617 are derived from its carefully balanced chemical composition. The typical composition, as per ASTM/ASME specifications, is outlined in the table below. 

 | Element | Content (%) (Typical) | Role & Function | 

| :--- | :--- | :--- | 

| **Nickel (Ni)** | Balance | Provides the austenitic matrix, ensuring high-temperature strength and resistance to corrosion. | 

| **Chromium (Cr)** | 20.0 - 24.0 | Imparts exceptional resistance to oxidation and sulfidation at high temperatures. | 

| **Cobalt (Co)** | 10.0 - 15.0 | Enhances solid-solution strengthening and provides long-term thermal stability. | 

| **Molybdenum (Mo)** | 8.0 - 10.0 | Improves solid-solution strength and provides resistance to pitting and crevice corrosion. | 

| **Aluminum (Al)** | 0.8 - 1.5 | Forms a protective, adherent Al₂O₃ scale, crucial for oxidation resistance. | 

| **Carbon (C)** | 0.05 - 0.15 | Contributes to high-temperature strength through carbide formation. | 

| **Iron (Fe)** | ≤ 3.0 | Residual element. | 

| **Manganese (Mn)** | ≤ 1.0 | Aids in deoxidation during melting. | 

| **Silicon (Si)** | ≤ 1.0 | Enhances resistance to oxidation and carburization. | 

| **Titanium (Ti)** | ≤ 0.6 | Can form carbides and nitrides, contributing to strength. | 

| **Copper (Cu)** | ≤ 0.5 | Residual element. | 

| **Boron (B)** | ≤ 0.006 | Enhances creep strength. | 

| **Sulfur (S)** | ≤ 0.015 | Residual element (impurity). | 

 --- ### **Physical Properties** 

 The physical properties of Alloy 617 make it suitable for applications involving severe thermal cycling and high heat flux. 

 | Property | Value / Condition | 

| :--- | :--- | 

| **Density** | 8.36 g/cm³ (0.302 lb/in³) | 

| **Melting Range** | 1332 - 1377 °C (2430 - 2510 °F) | 

| **Specific Heat** | 455 J/kg·K at 20°C | 

| **Thermal Conductivity** | 13.4 W/m·K at 100°C | 

| **Thermal Expansion** | 11.8 μm/m·K (20 - 100°C) | 

| **Electrical Resistivity** | 1.24 μΩ·m at 20°C | 

| **Modulus of Elasticity** | 211 GPa (30.6 x 10⁶ psi) at 21°C | 

 --- ### **Key Characteristics & Mechanical Properties

** Alloy 617 is primarily valued for its performance at elevated temperatures. *   

**Excellent High-Temperature Strength:

** Maintains high tensile, creep, and rupture strength up to 1100°C (2010°F). *   

**Superior Oxidation Resistance:** The high Chromium and Aluminum content forms a stable, protective oxide layer (Cr₂O₃ and Al₂O₃), preventing further degradation. *   

**Resistance to Various Corrosive Environments:

** Performs well in carburizing and chlorinating atmospheres. *   

**Good Fabricability:** Can be fabricated using standard hot and cold working methods, and joined by conventional welding techniques. 

 **Typical Room Temperature Mechanical Properties (Annealed Condition):** *  

**Tensile Strength:** ≥ 655 MPa (95 ksi) *   

**Yield Strength (0.2% Offset):** ≥ 240 MPa (35 ksi) *   

**Elongation:** ≥ 45% 

 --- ### **Product Forms and Applications

** Alloy 617 is available in a variety of product forms to suit different manufacturing needs. 

 **Product Forms:** *   

Plate, Sheet, and Strip *   

Bar, Rod, and Wire *   

Pipe and Tubing *   

Forgings and Fittings *  

 Welding Consumables (Electrode, Wire) 

 **Applications:** *   

**Aerospace:**    *   

Combustion liners and transition ducts in gas turbine engines.    

*   Afterburner components.    

*   Rocket engine parts. *   

**Power Generation:**    

*   Critical components for advanced Ultra-Supercritical (USC) coal-fired power plants.    

*   Heat exchangers, tubing, and piping in High-Temperature Gas-Cooled Reactors (HTGRs/VHTRs).    

*   Ducting and combustors for land-based gas turbines. *   

**Industrial Processing:**    

*   Heat treatment fixtures (baskets, trays, retorts).    

*   Components for catalytic converter systems.    

*   Tubes for high-temperature reformers and crackers in the petrochemical industry. 

 --- ### **International Standards

** Alloy 617 is covered by numerous international standards that specify requirements for its chemical, mechanical, and dimensional properties. 

 | Product Form | Standard Number | Standard Title / Description | 

| :--- | :--- | :--- | 

| **Plate, Sheet, Strip** | **ASTM B168** | Standard Specification for Nickel-Chromium-Iron Alloys (UNS N06617) Plate, Sheet, and Strip | 

| **Bar, Rod, Wire** | **ASTM B166** | Standard Specification for Nickel-Chromium-Iron Alloys (UNS N06617) Rod, Bar, and Wire | 

| **Seamless Pipe & Tube** | **ASTM B167** | Standard Specification for Nickel-Chromium-Iron Alloys (UNS N06617) Seamless Pipe and Tube | 

| **Welded Tube** | **ASTM B516** | Standard Specification for Welded Nickel-Chromium-Iron Alloy (UNS N06617) Tubes | 

| **Forgings** | **ASTM B564** | Standard Specification for Nickel Alloy Forgings | 

| **General Material** | **ASME SB-168** | ASME Boiler and Pressure Vessel Code, Section II (Equivalent to ASTM B168) | 

| **Aerospace** | **AMS 5887** | Bar, Wire, Forging Stock, and Rings, Nickel Base Alloy, 52Ni - 22Cr - 12Co - 9Mo, Consumable Electrode or Vacuum Induction Melted, Solution Heat Treated | 

 --- ### **Conclusion** 

 In summary, Alloy 617 (Inconel 617 / UNS N06617) is a premier nickel-based superalloy engineered for extreme service. Its robust chemical composition delivers unmatched high-temperature strength, oxidation resistance, and structural stability, making it an indispensable material for pushing the boundaries of efficiency and performance in advanced aerospace, power generation, and industrial systems worldwide.

Packing of Alloy 617 (Inconel 617 / UNS N06617)

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 1633 gallon liquid totes Special package is available on request.