Alloy 617，Inconel 617 Fittings，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 Fittings / UNS N06617 – Nickel-Chromium-Cobalt-Molybdenum Alloy Fittings** **Product Overview** Inconel 617 Fittings (UNS N06617) are precision-engineered pipe and tube connectors manufactured from nickel-chromium-cobalt-molybdenum alloy, specifically designed for high-temperature applications requiring exceptional oxidation resistance and structural integrity. These fittings maintain excellent mechanical properties from room temperature up to 1200°C (2192°F) and offer superior performance in oxidizing, carburizing, and combustion atmospheres. They are essential components in high-temperature piping systems requiring reliable performance in gas turbine, chemical processing, and power generation applications. --- **Chemical Composition (ASTM B366 / ASTM B564)** | 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 | *The balanced composition provides exceptional high-temperature strength through solid solution strengthening and formation of protective chromium and aluminum 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 (Fittings – Solution Annealed Condition)** | Property | Room Temperature | 815°C (1500°F) | 980°C (1800°F) | |-----------------------------|------------------|----------------|----------------| | **Tensile Strength** | 700–850 MPa | 330–430 MPa | 140–190 MPa | | **Yield Strength (0.2% Offset)** | 290–430 MPa | 210–280 MPa | 110–150 MPa | | **Elongation in 2"** | 40–55% | 45–60% | 60–75% | | **Hardness** | 80–95 HRB | 65–80 HRB | 50–65 HRB | | **Impact Strength (Charpy V-Notch)** | 75–110 J | 55–85 J | 35–65 J | --- **Fitting Types & Specifications** **Butt-Weld Fittings (ASME B16.9)** - **Elbows**: 45°, 90°, 180° (Long & Short Radius) - **Tees**: Equal and reducing - **Reducers**: Concentric and eccentric - **Caps**: All pressure ratings - **Stub Ends**: Lap joint style **Socket-Weld Fittings (ASME B16.11)** - **Elbows**: 45°, 90° - **Tees**: Straight and reducing - **Unions**: Standard and compact - **Couplings**: Half and full - **Plugs**: Square head and round head **Threaded Fittings** - **Nipples**: Close, shoulder, long - **Elbows**: 45°, 90° - **Tees**: Equal and reducing - **Couplings**: Full and half - **Bushings**: Hex and reducing **Flanges (ASME B16.5)** - **Slip-On**: Class 150 to 2500 - **Weld Neck**: Class 150 to 2500 - **Blind**: Class 150 to 2500 - **Socket Weld**: Class 150 to 2500 - **Lap Joint**: Class 150 to 1500 --- **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 Thermal Stability** – Resists thermal fatigue and microstructural degradation 5. **Excellent Weldability** – Can be welded using standard procedures with matching filler metals 6. **Resistance to Sulfur Attack** – Performs well in sulfur-containing atmospheres 7. **Good Creep Rupture Strength** – Maintains pressure integrity at elevated temperatures --- **Product Applications** **Gas Turbine Systems** - Combustor liner connections - Transition duct fittings - Hot gas path components - Afterburner system fittings - Exhaust system connections **Chemical Processing** - Catalytic reactor systems - Reformer furnace fittings - High-temperature heat exchanger connections - Process heater fittings - Pyrolysis reactor systems **Power Generation** - Heat recovery steam generator systems - Advanced boiler fittings - High-temperature steam line components - Nuclear reactor helium coolant systems - Superheater and reheater connections **Aerospace & Defense** - Rocket engine propellant systems - Jet engine bleed air systems - High-temperature hydraulic systems - Thermal management system fittings - Exhaust gas recirculation systems **Heat Treatment Industry** - Radiant tube connections - Retort atmosphere systems - Heat treatment gas supply lines - Annealing line components - Carburizing furnace systems --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N06617** | Unified Numbering System | | **ASTM** | B366 | Factory-Made Wrought Nickel Alloy Fittings | | **ASTM** | B564 | Nickel Alloy Forgings | | **ASME** | SB366 | Boiler and Pressure Vessel Code | | **ASME** | SB564 | Boiler and Pressure Vessel Code | | **MSS** | SP-97 | Integrally Reinforced Forged Branch Outlet Fittings | | **DIN** | 2.4663 | German Standard | | **EN** | NiCr23Co12Mo | European Standard | --- **Manufacturing Processes** **Forging Methods** - **Closed-Die Forging**: High-precision complex geometries - **Open-Die Forging**: Custom shapes and large components - **Ring Rolling**: Circular components - **Press Forging**: Uniform deformation **Heat Treatment** - **Solution Annealing**: 1150–1200°C (2100–2200°F) - **Quenching**: Water or rapid air cool - **Stress Relieving**: 870–980°C (1600–1800°F) - **Final Heat Treatment**: Per ASTM B366 requirements **Quality Control** - **Chemical Analysis**: Verify composition - **Mechanical Testing**: Tensile and hardness - **Dimensional Inspection**: Per applicable standards - **Non-Destructive Examination**: As specified --- **Pressure-Temperature Ratings** **ASME B16.9/B16.11 Ratings** | Pressure Class | 100°F (38°C) | 500°F (260°C) | 800°F (427°C) | 1000°F (538°C) | |----------------|--------------|---------------|---------------|----------------| | **Class 150** | 285 psi | 240 psi | 190 psi | 160 psi | | **Class 300** | 740 psi | 620 psi | 490 psi | 410 psi | | **Class 600** | 1480 psi | 1240 psi | 980 psi | 820 psi | | **Class 900** | 2220 psi | 1860 psi | 1470 psi | 1230 psi | --- **Installation & Maintenance** **Welding Procedures** - **Welding Methods**: GTAW, GMAW, SMAW - **Filler Metals**: ERNiCrCoMo-1, ENiCrCoMo-1 - **Shielding Gas**: Argon or argon-helium mixtures - **Preheating**: Not required - **Post-Weld Heat Treatment**: Generally not necessary **Installation Guidelines** - **Alignment**: Proper alignment before welding - **Support**: Adequate piping support - **Gaskets**: High-temperature graphite or ceramic fiber - **Bolting**: Matching or compatible high-temperature alloys - **Testing**: Hydrostatic or pneumatic testing **Maintenance Considerations** - **Inspection**: Regular visual examination - **Cleaning**: Compatible cleaning solutions - **Replacement**: Proper procedures for removal - **Documentation**: Maintain installation records --- **Quality Assurance & Testing** **Standard Testing** - Chemical analysis verification - Tensile testing at room temperature - Hardness testing - Hydrostatic testing - Dimensional verification **Non-Destructive Testing** - Liquid penetrant examination - Magnetic particle testing - Ultrasonic examination - Radiographic examination (for critical applications) **Certification Requirements** - Mill Test Certificates per EN 10204 3.1 - Chemical analysis certificates - Mechanical test reports - Heat treatment records - NDE reports as specified - Material traceability documentation --- **High-Temperature Performance** **Oxidation Resistance Data** - **Maximum Service Temperature**: 1150°C (2102°F) - **Cyclic Oxidation Life**: >1000 cycles at 1100°C - **Oxidation Rate**: <0.4 mm/year at 1100°C - **Scale Adherence**: Excellent, self-healing Cr₂O₃ and Al₂O₃ scales **Creep Properties** - **1000h Rupture Strength at 980°C**: 45 MPa (6.5 ksi) - **1000h Rupture Strength at 1095°C**: 16 MPa (2.3 ksi) - **Minimum Creep Rate**: Low even at elevated temperatures --- **Corrosion Resistance Performance** **Excellent Resistance To** - High-temperature oxidation - Carburizing atmospheres - Nitriding environments - Sulfur-containing gases - Molten salt corrosion **Good Resistance To** - Nitric acid vapors - Alkaline solutions - Organic acid environments - Atmospheric corrosion - Steam and condensate --- **Packaging & Handling** **Standard Packaging** - Individual plastic protection - Wooden crates or boxes - Weather-proof wrapping - Clear identification labeling **Marking Requirements** - Material grade (INCONEL 617) - Heat number - Size and schedule - Pressure rating - Manufacturer's identification **Storage & Handling** - Store in clean, dry conditions - Protect from mechanical damage - Keep original packaging until installation - Maintain proper segregation from other materials --- **Conclusion** Inconel 617 Fittings (UNS N06617) provide an exceptional combination of high-temperature strength, outstanding oxidation resistance, and reliable performance in high-temperature pressure systems. Their superior resistance to oxidation, carburization, and thermal cycling makes them ideal for gas turbine systems, chemical processing, power generation, and high-temperature piping applications. Available in various types, sizes, and pressure ratings with comprehensive international certification, Inconel 617 fittings offer engineers and designers a trusted solution for demanding high-temperature applications where reliability, safety, and long-term performance are essential 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 1749 gallon liquid totes Special package is available on request.