Alloy 617，Inconel 617 ，UNS N06617，EFORU

British Specs:，American Specs:AMS 5887 Bar and Forgings AMS 5888 Plate AMS 5889 Sheet and Strip，German Specs:WS 2.4663a

### **Alloy 617 / Inconel 617 / UNS N06617 – Nickel-Chromium-Cobalt-Molybdenum Alloy** **Product Overview** Inconel 617 (UNS N06617) is a nickel-chromium-cobalt-molybdenum alloy with an addition of aluminum, designed to provide an exceptional combination of high-temperature strength, oxidation resistance, and carburization resistance. This solid-solution strengthened alloy maintains excellent mechanical properties at temperatures up to 1200°C (2192°F) and demonstrates superior performance in aggressive high-temperature environments, including combustion atmospheres and chemical processing conditions. Its balanced composition makes it particularly suitable for gas turbine components, heat treatment equipment, and chemical processing systems. --- **Chemical Composition (ASTM B166 / ASTM B168)** | 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 | | **Iron (Fe)** | 3.0 max | | **Carbon (C)** | 0.05–0.15 | | **Manganese (Mn)**| 1.0 max | | **Silicon (Si)** | 1.0 max | | **Sulfur (S)** | 0.015 max | | **Titanium (Ti)**| 0.6 max | | **Copper (Cu)** | 0.5 max | *The balanced composition provides exceptional high-temperature strength through solid solution strengthening and formation of protective oxide scales.* --- **Physical Properties** | Property | Value | |-------------------------------|---------------------------------| | **Density** | 8.36 g/cm³ (0.302 lb/in³) | | **Melting Range** | 1330–1380°C (2426–2516°F) | | **Electrical Resistivity** | 125 μΩ·cm (at 21°C) | | **Thermal Conductivity** | 13.4 W/m·K (at 100°C) | | **Mean Coefficient of Thermal Expansion** | 12.8 μm/m·°C (20–100°C) | | **Modulus of Elasticity** | 211 GPa (30,600 ksi) | | **Magnetic Permeability** | <1.005 (Essentially non-magnetic)| --- **Mechanical Properties (Annealed Condition)** | Property | Room Temperature | 815°C (1500°F) | 980°C (1800°F) | |-----------------------------|------------------|----------------|----------------| | **Tensile Strength** | 730 MPa (106 ksi)| 380 MPa (55 ksi)| 170 MPa (25 ksi)| | **Yield Strength (0.2% Offset)** | 310 MPa (45 ksi)| 240 MPa (35 ksi)| 130 MPa (19 ksi)| | **Elongation in 2"** | 45% | 50% | 65% | | **Reduction of Area** | 60% | 65% | 75% | | **Hardness** | 85 HRB | 75 HRB | 60 HRB | **Creep-Rupture Properties** - **1000h Rupture Strength at 980°C**: 48 MPa (7 ksi) - **1000h Rupture Strength at 1095°C**: 17 MPa (2.5 ksi) - **Creep Strength (1% in 1000h) at 980°C**: 28 MPa (4 ksi) --- **Key Characteristics & Advantages** 1. **Exceptional High-Temperature Strength** – Maintains mechanical properties up to 1200°C (2192°F) 2. **Outstanding Oxidation Resistance** – Excellent performance in oxidizing atmospheres up to 1150°C (2102°F) 3. **Excellent Carburization Resistance** – Superior performance in carburizing environments 4. **Good Nitriding Resistance** – Withstands nitriding atmospheres 5. **Excellent Thermal Stability** – Resists thermal fatigue and microstructural degradation 6. **Good Fabricability** – Can be welded, formed, and machined using standard techniques 7. **Resistance to Sulfur Attack** – Performs well in sulfur-containing environments --- **Product Applications** **Gas Turbine Industry** - Combustion cans and liners - Transition ducts - Afterburner components - Turbine seals and rings - Hot gas path components **Aerospace & Defense** - Rocket engine components - Jet engine parts - Heat exchanger components - High-temperature fasteners - Thermal protection systems **Chemical Processing** - Catalytic reactor systems - Reformer furnace components - High-temperature heat exchangers - Process heater tubes - Pyrolysis equipment **Power Generation** - Heat recovery steam generators - Advanced boiler components - Nuclear reactor components (helium-cooled) - High-temperature piping systems - Superheater and reheater elements **Heat Treatment Industry** - Radiant tubes - Retorts and muffles - Heat treatment fixtures - Furnace rolls and rails - Annealing covers --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N06617** | Unified Numbering System | | **ASTM** | B166 | Rod, Bar, and Wire | | **ASTM** | B168 | Plate, Sheet, and Strip | | **ASTM** | B167 | Seamless Pipe and Tube | | **ASME** | SB166 | Boiler and Pressure Vessel Code | | **ASME** | SB168 | Boiler and Pressure Vessel Code | | **AMS** | 5884 | Aerospace Material Specification | | **DIN** | 2.4663 | German Standard | | **EN** | NiCr23Co12Mo | European Standard | --- **High-Temperature Performance** **Oxidation Resistance** - **Maximum Continuous Temperature**: 1150°C (2102°F) - **Cyclic Oxidation Life**: Excellent up to 1100°C (2012°F) - **Oxidation Rate**: <0.5 mm/year at 1100°C - **Scale Characteristics**: Forms protective Cr₂O₃ and Al₂O₃ scales **Carburization Resistance** - **Temperature Range**: Up to 1150°C (2102°F) - **Performance**: Superior to most nickel-based alloys - **Applications**: Ethylene cracking furnaces, reformer furnaces **Creep and Rupture Strength** - **Design Stress Values**: ASME Code Case 1982 - **Long-term Stability**: Excellent microstructural stability - **Aging Characteristics**: Minimal phase precipitation up to 1000°C --- **Fabrication & Processing** **Welding Characteristics** - **Weldability**: Excellent - **Methods**: GTAW, GMAW, SMAW - **Filler Metals**: ERNiCrCoMo-1, ENiCrCoMo-1 - **Preheating**: Not required - **Post-Weld Heat Treatment**: Generally not necessary **Machining Guidelines** - **Tools**: Carbide tools recommended - **Speeds**: Moderate speeds with positive rake - **Feeds**: Medium to heavy feeds - **Coolants**: Required for optimum results **Forming Operations** - **Hot Working**: 1175–1230°C (2150–2250°F) - **Cold Working**: Good capability with intermediate annealing - **Annealing**: 1150–1200°C (2100–2200°F) --- **Heat Treatment** **Solution Annealing** - **Temperature**: 1150–1200°C (2100–2200°F) - **Time**: 30 minutes to 2 hours - **Cooling**: Rapid air cool or water quench **Stress Relieving** - **Temperature**: 870–980°C (1600–1800°F) - **Time**: 1–4 hours depending on section size --- **Quality Assurance & Testing** **Standard Testing** - Chemical analysis verification - Tensile testing at room and elevated temperatures - Hardness testing - Impact testing - Microstructural examination **High-Temperature Testing** - Creep and stress rupture testing - Oxidation testing per ASTM G54 - Thermal stability testing - Cyclic oxidation testing **Certification** - Mill Test Certificates per EN 10204 3.1 - Chemical analysis certificates - Mechanical test reports - Heat treatment records - NDE reports as specified --- **Corrosion Resistance** **Excellent Resistance To** - High-temperature oxidation - Carburizing atmospheres - Nitriding environments - Sulfur-containing gases - Molten salts **Good Resistance To** - Nitric acid - Organic acids - Alkaline solutions - Atmospheric corrosion - Steam and condensate --- **Available Product Forms** - Plate and Sheet - Rod and Bar - Wire and Strip - Pipe and Tube - Forgings and Fittings - Welding Products --- **Conclusion** Inconel 617 (UNS N06617) is a versatile nickel-chromium-cobalt-molybdenum alloy that offers an exceptional combination of high-temperature strength, outstanding oxidation resistance, and excellent mechanical properties. Its superior performance in extreme temperature environments, coupled with good fabricability and corrosion resistance, makes it ideal for applications in gas turbines, aerospace, chemical processing, and power generation industries. The alloy's balanced composition ensures long-term stability and reliability in aggressive high-temperature environments, providing engineers and designers with a proven material solution for the most demanding high-temperature applications where performance, durability, and safety are critical requirements.

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 1741 gallon liquid totes Special package is available on request.