Alloy 86,Nimonic 86 Pipe,,E FORU

British Specs:，American Specs:，German Specs:

### Technical Datasheet: Alloy 86 / Nimonic 86 Pipe --- #### **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 **pipe** form, this material is engineered for high-temperature pressure applications requiring exceptional oxidation resistance, carburization resistance, and structural integrity at temperatures up to **1150°C (2100°F)**. The pipe product is particularly suited for conveying hot gases, process fluids, and corrosive media 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 **Elevated Temperature Performance:** - **800°C (1470°F)**: Tensile Strength ≈ 450 MPa (65 ksi) - **1000°C (1830°F)**: Tensile Strength ≈ 150 MPa (22 ksi) - **1100°C (2010°F)**: Tensile Strength ≈ 80 MPa (12 ksi) **Pressure-Temperature Rating:** - Suitable for high-pressure applications up to 100 bar (1450 psi) - Maintains pressure integrity at temperatures up to 1100°C - Excellent resistance to pressure-induced creep deformation --- #### **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 - **Excellent Carburization Resistance**: Superior performance in carburizing environments - **Good Sulfidation Resistance**: Withstands sulfur-containing atmospheres - **Excellent Creep Rupture Strength**: 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 --- #### **6. Product Applications** **Heat Treatment Industry:** - Radiant tubes for carburizing furnaces - Atmosphere gas supply lines - Quench gas piping systems - Furnace cooling water pipes - Process gas conveyance systems **Chemical & Petrochemical Processing:** - Reformer furnace transfer lines - Ethylene cracking furnace tubes - Process gas collection headers - High-temperature reactor feed lines - Catalyst regeneration lines **Power Generation:** - High-temperature steam lines - Gas turbine exhaust ducts - Heat recovery steam generator (HRSG) tubing - Boiler pressure parts - Superheater and reheater components **Other Applications:** - Glass manufacturing furnace piping - Semiconductor process gas lines - Nuclear reactor instrumentation lines - Aerospace hydraulic and fuel lines --- #### **7. International Standards** | Standard Organization | Standard Designation | Description | |----------------------|---------------------|-------------| | **ASTM International** | ASTM B619 | Welded Nickel Alloy Pipe | | **ASTM International** | ASTM B622 | Seamless Nickel Alloy Pipe and Tube | | **ASTM International** | ASTM B517 | Seamless and Welded Pipe | | **ASME** | SB-619 | Welded Pipe (Pressure Vessel Code) | | **ASME** | SB-622 | Seamless Pipe and Tube | | **ISO** | ISO 1127 | Stainless Steel Pipes | | **DIN** | DIN 17456 | Seamless Circular Tubes | --- #### **8. Pipe Specifications & Availability** **Manufacturing Methods:** - **Seamless Pipe**: Hot extruded or cold drawn - **Welded Pipe**: GTAW (TIG) or laser welded **Size Ranges:** - **OD Range**: 6 mm to 600 mm (0.25" to 24") - **Wall Thickness**: 1 mm to 50 mm (0.04" to 2.0") - **Lengths**: Random 6-7 meters or cut-to-length **Standard Specifications:** - Schedule 5S through XXS - Pressure ratings per ASME B36.10/B36.19 - Custom sizes and configurations available **Surface Conditions:** - Pickled and passivated - Bright annealed - Ground and polished - Beveled ends for welding --- #### **9. Heat Treatment** **Standard Pipe Heat Treatment:** - **Solution Annealing**: 1150–1180°C (2100–2150°F) for 1–2 hours, rapid cool - **Stress Relieving**: 850–900°C (1560–1650°F) for 2–4 hours **Special Considerations for Pipe:** - Full heat treatment after welding - Localized heat treatment for repair - Controlled cooling to prevent distortion --- #### **10. Fabrication & Installation** **Welding Procedures:** - **Preferred Method**: GTAW (TIG) - **Filler Metal**: AWS A5.14 ERNiCr-3 - **Shielding Gas**: Argon or Argon-Helium mixtures - **Post-Weld Heat Treatment**: Solution annealing recommended **Forming & Bending:** - **Hot Bending**: 1050–1150°C (1920–2100°F) - **Cold Bending**: With appropriate bend radii - **Mandrel Bending**: Recommended for thin-walled pipes **Installation Guidelines:** - Proper support to avoid stress concentration - Accommodation for thermal expansion - Appropriate gasket selection - Correct bolt tightening procedures --- #### **11. Quality Assurance** **Testing & Inspection:** - Hydrostatic testing per applicable codes - Ultrasonic testing per ASTM A388 - Eddy current testing for seamless pipes - Radiographic examination for welded pipes - Liquid penetrant testing **Certification:** - Chemical analysis certification - Mechanical test reports - Pressure test certificates - Material traceability documentation - Compliance with ASME, ASTM, and customer specifications --- **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 2082 gallon liquid totes Special package is available on request.