Alloy 86,Nimonic 86 ,,E FORU

British Specs:，American Specs:，German Specs:

### Technical Datasheet: Alloy 86 / Nimonic 86 --- #### 1. Introduction **Alloy 86**, commercially known as **Nimonic 86**, is a nickel-chromium-cobalt superalloy specifically developed for extreme high-temperature applications requiring exceptional oxidation resistance, carburization resistance, and sulfidation resistance. This alloy is particularly designed for service in aggressive environments at temperatures up to **1150°C (2100°F)**, making it superior to many other nickel-based superalloys in high-temperature corrosive conditions. --- #### 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 | | **Titanium (Ti)** | ≤ 0.5 | 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 | | **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 | | **Sulfur (S)** | ≤ 0.007 | Impurity control | --- #### 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 **Room Temperature Properties (Solution Annealed):** - **Tensile Strength**: 690–830 MPa (100–120 ksi) - **Yield Strength (0.2% Offset)**: 310–450 MPa (45–65 ksi) - **Elongation**: 30–45% - **Reduction of Area**: 40–55% - **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) **Creep Rupture Strength (1000 hours):** - **900°C (1650°F)**: ≈ 60 MPa (8.7 ksi) - **1000°C (1830°F)**: ≈ 25 MPa (3.6 ksi) - **1100°C (2010°F)**: ≈ 10 MPa (1.5 ksi) --- #### 5. Key Characteristics & Advantages - **Exceptional Oxidation Resistance**: Superior performance in oxidizing atmospheres up to 1150°C - **Excellent Carburization Resistance**: Withstands carburizing environments better than most alloys - **Good Sulfidation Resistance**: Performs well in sulfur-containing atmospheres - **High-Temperature Strength**: Maintains mechanical properties at elevated temperatures - **Thermal Stability**: Resists microstructural degradation during long-term exposure - **Good Fabricability**: Can be machined, welded, and formed using appropriate techniques - **Cyclic Oxidation Resistance**: Excellent performance under thermal cycling conditions --- #### 6. Product Applications **Heat Treatment Industry:** - Radiant tubes for carburizing and neutral hardening furnaces - Furnace muffles and retorts - Heat treatment fixtures and baskets - Annealing trays and containers - Brazing fixtures **Chemical & Petrochemical Processing:** - Reformer furnace components - Ethylene cracking furnace tubes - Catalyst support grids - High-temperature reactor internals - Process heater components **Power Generation:** - Gas turbine combustion components - Heat recovery system parts - Boiler components - High-temperature ducting systems **Aerospace & Defense:** - Jet engine combustion chambers - Afterburner components - Rocket motor parts - High-temperature fasteners **Other Applications:** - Glass manufacturing equipment - Ceramic kiln components - Nuclear reactor components - Semiconductor processing equipment --- #### 7. International Standards **ASTM Specifications:** - **ASTM B435**: Plate, Sheet, and Strip - **ASTM B572**: Rod and Bar - **ASTM B564**: Forgings - **ASTM B619**: Welded Pipe - **ASTM B622**: Seamless Pipe and Tube **Aerospace Specifications:** - **AMS 5872**: Sheet, Strip, and Plate - **AMS 5660**: Bars, Forgings, and Rings **European Standards:** - **EN 10095**: Heat resisting steels and nickel alloys - **DIN 17742**: Wrought nickel and nickel alloys - **BS HR 501**: Nickel-chromium-cobalt alloy **International Equivalents:** | Country/Region | Standard | Equivalent Designation | |----------------|----------|------------------------| | Europe (ISO) | ISO 6207 | NiCr25Co15 | | Germany | DIN 17742 | NiCr25Co15 | | France | NF A54-301 | NiCr25Co15 | | UK | BS HR 501 | Nimonic 86 | | Japan | JIS H4551 | NCF 86 | | China | GB/T 15008 | GH86 | --- #### 8. Fabrication & Processing **Machining:** - **Optimal Condition**: Solution annealed condition - **Tooling**: Carbide tools recommended - **Coolant**: Required for heavy machining operations - **Speeds and Feeds**: Moderate to maintain tool life **Welding:** - **Preferred Method**: GTAW (TIG) - **Filler Metal**: Matching composition or AWS A5.14 ERNiCr-3 - **Preheat**: Generally not required - **Post-Weld Heat Treatment**: Solution annealing recommended **Heat Treatment:** - **Solution Annealing**: 1150–1180°C (2100–2150°F), rapid cool - **Stress Relieving**: 850–900°C (1560–1650°F) - **Aging**: Not typically required **Forming:** - **Hot Working**: 1050–1150°C (1920–2100°F) - **Cold Working**: Possible with intermediate annealing - **Annealing**: 1150–1180°C (2100–2150°F) after severe cold work --- #### 9. Corrosion Resistance **Oxidation Resistance:** - Excellent up to 1150°C (2100°F) - Forms protective, adherent chromium oxide scale - Resists scale spallation during thermal cycling **Carburization Resistance:** - Superior performance in carburizing atmospheres - Maintains integrity in gas carburizing environments - Resists carbon penetration **Sulfidation Resistance:** - Good resistance to sulfur-containing atmospheres - Suitable for applications with moderate sulfur levels **Other Environments:** - Good resistance to nitrogen atmospheres - Moderate resistance to chlorine-containing environments - Suitable for vacuum and controlled atmosphere applications --- #### 10. Quality Assurance - Chemical analysis certification - Mechanical testing reports - Non-destructive testing (UT, PT, RT) as required - Microstructural examination - Full material traceability - Compliance with 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 2079 gallon liquid totes Special package is available on request.