Alloy 86,Nimonic 86 Fittings,,E FORU

British Specs:，American Specs:，German Specs:

### Technical Datasheet: Alloy 86 / Nimonic 86 Fittings --- #### **1. Introduction** **Alloy 86** (commercially known as **Nimonic 86**) is a nickel-chromium-cobalt superalloy specifically designed for extreme high-temperature service in aggressive environments. In **fittings** form, this material is engineered for high-temperature piping systems requiring exceptional oxidation resistance, carburization resistance, and pressure integrity at temperatures up to **1150°C (2100°F)**. The fittings are precision-manufactured to maintain leak-proof connections and structural stability under severe thermal cycling and mechanical stress conditions in demanding industrial applications. --- #### **2. Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | **Nickel (Ni)** | Balance | Austenitic matrix, high-temperature stability | | **Chromium (Cr)** | 24.0–27.0 | Superior oxidation and corrosion resistance | | **Cobalt (Co)** | 15.0–20.0 | Solid solution strengthening | | **Iron (Fe)** | ≤ 7.0 | Residual element | | **Carbon (C)** | 0.05–0.10 | Grain boundary strengthening | | **Silicon (Si)** | 0.2–0.6 | Oxidation resistance enhancement | | **Manganese (Mn)** | ≤ 0.5 | Deoxidation | | **Titanium (Ti)** | ≤ 0.5 | Residual element | | **Copper (Cu)** | ≤ 0.5 | Residual element | | **Aluminum (Al)** | ≤ 0.5 | Residual element | | **Zirconium (Zr)** | ≤ 0.05 | Creep property enhancement | | **Boron (B)** | ≤ 0.005 | Grain boundary strengthening | --- #### **3. Physical Properties** | Property | Value | Condition | |----------|-------|-----------| | **Density** | 8.16 g/cm³ (0.295 lb/in³) | At 20°C | | **Melting Range** | 1350–1400°C (2460–2550°F) | — | | **Thermal Expansion Coefficient** | 14.2 μm/m·°C | 20–100°C | | **Thermal Conductivity** | 12.1 W/m·K | At 20°C | | **Specific Heat** | 450 J/kg·K | At 20°C | | **Modulus of Elasticity** | 215 GPa (31.2 × 10⁶ psi) | At 20°C | | **Electrical Resistivity** | 1.25 μΩ·m | At 20°C | --- #### **4. Mechanical Properties (Solution Annealed)** **Room Temperature Properties:** - **Tensile Strength**: 690–830 MPa (100–120 ksi) - **Yield Strength (0.2% Offset)**: 310–450 MPa (45–65 ksi) - **Elongation**: 30–45% - **Hardness**: 180–230 HB - **Impact Strength**: 35–55 J **Pressure-Temperature Rating:** - Suitable for high-pressure applications up to 690 bar (10,000 psi) - Maintains pressure integrity at temperatures up to 1100°C - Excellent resistance to pressure-induced creep deformation **Elevated Temperature Performance:** - **800°C (1470°F)**: Tensile Strength ≈ 450 MPa (65 ksi) - **1000°C (1830°F)**: Tensile Strength ≈ 150 MPa (22 ksi) --- #### **5. Key Characteristics & Advantages** - **Exceptional High-Temperature Strength**: Maintains structural integrity under internal pressure at elevated temperatures - **Superior Oxidation Resistance**: Chromium content provides excellent protection in oxidizing atmospheres up to 1150°C - **Excellent Carburization Resistance**: Outstanding performance in carburizing environments - **Good Sulfidation Resistance**: Withstands sulfur-containing atmospheres - **Excellent Creep Resistance**: Suitable for long-term service under sustained load - **Good Weldability**: Compatible with standard welding processes - **Thermal Fatigue Resistance**: Withstands cyclic temperature variations in piping systems - **Dimensional Stability**: Maintains precise tolerances under thermal cycling conditions --- #### **6. Product Applications** **Heat Treatment Industry:** - Radiant tube connectors and unions - Furnace atmosphere gas line fittings - Quench system piping components - Process gas manifold fittings - Heat treatment furnace piping connections **Chemical & Petrochemical Processing:** - Reformer furnace transfer line fittings - Ethylene cracking furnace connections - Process gas collection header fittings - High-temperature reactor connections - Catalyst regeneration line components **Power Generation:** - High-temperature steam line fittings - Gas turbine exhaust system connections - Heat recovery steam generator (HRSG) fittings - Boiler pressure part connections - Superheater and reheater components **Other Applications:** - Glass manufacturing furnace piping systems - Semiconductor process gas line fittings - Nuclear reactor instrumentation connections - Aerospace hydraulic and fuel system components --- #### **7. International Standards** | Standard Organization | Standard Designation | Description | |----------------------|---------------------|-------------| | **ASTM International** | ASTM B366 | Factory-Made Wrought Nickel Alloy Fittings | | **ASME** | SB-366 | Factory-Made Wrought Fittings (Pressure Vessel Code) | | **ASME** | B16.9 | Factory-Made Wrought Buttwelding Fittings | | **ASME** | B16.11 | Forged Fittings, Socket-Welding and Threaded | | **MSS** | SP-43 | Wrought Stainless Steel Buttwelding Fittings | | **ISO** | ISO 18279 | Brazing — Imperfections in brazed joints | --- #### **8. Fittings Types & Specifications** **Buttweld Fittings:** - **Elbows**: 45°, 90°, 180° (Long & Short Radius) - **Tees**: Equal and reducing - **Reducers**: Concentric and eccentric - **Caps**: Pipe end closures - **Stub Ends**: Lap joint connections **Socket Weld Fittings:** - **Unions**: 3000 lb, 6000 lb ratings - **Elbows**: 45°, 90° - **Tees**: Straight and reducing - **Couplings**: Full and half - **Plugs and Caps**: Threaded closures **Threaded Fittings:** - **NPT Threads**: American Standard - **BSPT Threads**: British Standard - **High-temperature thread compounds compatible** **Flanges:** - **Slip-on**: SO Flanges - **Weld Neck**: WN Flanges - **Blind**: BL Flanges - **Socket Weld**: SW Flanges - **Lap Joint**: LJ Flanges **Special Fittings:** - **Instrumentation Ports**: Thermowell and pressure connections - **Custom Designs**: Engineered to specifications - **Repair Sleeves**: For pipeline maintenance --- #### **9. Manufacturing & Quality** **Manufacturing Processes:** - **Hot Forging**: For superior grain structure - **Cold Forming**: For precise dimensions - **Precision Machining**: For critical tolerances - **Heat Treatment**: In controlled atmosphere - **Surface Treatment**: Pickling and passivation **Quality Assurance:** - **Liquid Penetrant Testing**: Per ASTM E165 - **Radiographic Examination**: Per ASTM E94 - **Ultrasonic Testing**: Per ASTM A388 - **Hydrostatic Testing**: Per applicable codes - **Dimensional Verification**: To specified standards **Pressure Ratings:** - **Schedule**: 5S through XXS - **Class**: 150, 300, 600, 900, 1500, 2500 - **Custom Pressure Ratings**: Available for specific applications --- #### **10. Installation & Maintenance** **Welding Procedures:** - **Preferred Method**: GTAW (TIG) - **Filler Metal**: AWS A5.14 ERNiCr-3 - **Shielding Gas**: Argon or Argon-Helium mixtures - **Preheat**: Generally not required - **Post-Weld Heat Treatment**: Solution annealing recommended **Installation Guidelines:** - Proper alignment to avoid stress concentration - Appropriate gasket selection for high-temperature service - Correct bolt tightening procedures and sequences - Thermal expansion accommodation in system design - Support spacing per engineering specifications **Maintenance Considerations:** - Regular inspection for oxidation and creep damage - Periodic pressure testing for critical systems - Proper handling to prevent mechanical damage - Replacement schedule based on service conditions - Documentation of service history and inspections --- #### **11. Compliance & Certification** **Standards Compliance:** - **PED 2014/68/EU**: Pressure Equipment Directive - **ASME Boiler and Pressure Vessel Code**: Section VIII - **NACE MR0175**: Sulfide stress cracking resistant materials - **ISO 9001**: Quality management systems - **Customer-specific certifications available** **Documentation:** - **Material Certificates**: EN 10204 3.1/3.2 - **Test Reports**: Chemical and mechanical - **Inspection Records**: NDT and dimensional - **Traceability**: Full manufacturing history - **Compliance Certificates**: Regulatory requirements --- **Disclaimer:** This technical data is for informational purposes only. Properties may vary based on manufacturing process, heat treatment, and specific product form. For critical applications, consult current manufacturer technical data sheets and relevant industry standards. Always verify material certification and testing requirements for specific service conditions.

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 2087 gallon liquid totes Special package is available on request.