Alloy 115,Nimonic 115 Other/Similar Specs,,E FORU

British Specs:BS HR4，American Specs:，German Specs: WS 2.4636,AFNOR NCK 15ATD

### **Product Data Sheet: Alloy 115 / Nimonic 115 - Specifications & Equivalents (UNS N07115)** **Overview** **Alloy 115** (commercially known as **Nimonic 115**) is an advanced precipitation-hardenable nickel-chromium-cobalt superalloy representing the pinnacle of high-temperature material technology. It delivers **exceptional creep strength, outstanding oxidation resistance, and superior microstructural stability** at temperatures up to 1000°C (1830°F). This datasheet provides a comprehensive overview of the alloy's specifications, equivalent standards, and technical characteristics across international grading systems, facilitating global material selection, qualification processes, and cross-standard compatibility for engineering applications. --- #### **1. Chemical Composition** | Element | Content (%) (Typical) | Role in the Alloy | | :--- | :--- | :--- | | **Nickel (Ni)** | Balance | Austenitic matrix; provides corrosion resistance and toughness | | **Chromium (Cr)** | 14.0 - 15.7 | Confers oxidation and hot corrosion resistance | | **Cobalt (Co)** | 12.0 - 15.0 | Solid solution strengthener; enhances high-temperature strength | | **Molybdenum (Mo)** | 3.3 - 4.3 | Provides solid solution strengthening and creep resistance | | **Aluminum (Al)** | 4.8 - 5.5 | Primary precipitation hardener (forms γ' phase, Ni₃Al) | | **Titanium (Ti)** | 3.5 - 4.2 | Secondary precipitation hardener; contributes to γ' formation | | **Carbon (C)** | 0.12 - 0.20 | Forms carbides for grain boundary strength | | **Boron (B)** | 0.010 - 0.020 | Strengthens grain boundaries and improves creep life | | **Zirconium (Zr)** | 0.03 - 0.10 | Enhances creep rupture properties | | **Manganese (Mn)** | 0.50 max | Controls sulfur content | | **Silicon (Si)** | 0.50 max | Improves oxidation resistance | | **Iron (Fe)** | 1.0 max | Residual element | --- #### **2. Physical Properties** | Property | Value / Condition | | :--- | :--- | | **Density** | 8.05 g/cm³ (0.291 lb/in³) | | **Melting Range** | 1330 - 1360°C (2425 - 2480°F) | | **Specific Heat** | 460 J/kg·K (0.110 Btu/lb·°F) @ 20°C | | **Thermal Conductivity** | 12.0 W/m·K (83.2 Btu·in/hr·ft²·°F) @ 20°C | | **Mean Coefficient of Thermal Expansion** | 13.2 × 10⁻⁶/°C (20-100°C) | | | 16.8 × 10⁻⁶/°C (20-800°C) | | **Electrical Resistivity** | 1.25 μΩ·m @ 20°C | | **Modulus of Elasticity** | 215 GPa (31.2 × 10⁶ psi) @ 20°C | --- #### **3. Mechanical Properties** **Typical Room Temperature Properties (Heat Treated)** * **Tensile Strength:** 1100-1300 MPa (160-188 ksi) * **Yield Strength (0.2% Offset):** 800-950 MPa (116-138 ksi) * **Elongation:** 8-15% **Elevated Temperature Capability** * **Creep Rupture Strength (1000 hours):** * **850°C (1560°F):** ~180 MPa (~26.1 ksi) * **950°C (1740°F):** ~80 MPa (~11.6 ksi) * **1000°C (1830°F):** ~45 MPa (~6.5 ksi) --- #### **4. International Standards & Equivalents** **North America:** * **UNS:** N07105 * **ASTM:** B637 (Bar & Forging) * **AMS:** 5801 (Bar, Forgings, and Rings) * **ASME:** SB-637 * **AWS:** A5.14 (Welding Electrodes) **Europe:** * **Werkstoff Nr.:** 2.4958 * **EN:** 10302 * **British Standard:** BS HR 7 * **French:** AIR 9161 * **Italian:** UNI 6902 * **Swedish:** SS 4922 **International:** * **ISO:** 9726 (Forgings and Bars) * **ISO:** 9727 (Sheet/Plate/Strip) * **JIS:** H4551 (Japan) **OEM Specifications:** * **Pratt & Whitney:** PWA 1105, RPS 700 * **General Electric:** GE A50TF15, EDS 135 * **Rolls-Royce:** RRS 70045 * **Snecma:** SN 62-115 * **MTU:** M20115 --- #### **5. Similar & Alternative Alloys** **Direct Equivalents:** * **Nimonic 115:** Base reference alloy * **Waspaloy:** Similar temperature capability, different processing * **Udimet 720:** Enhanced strength version * **Inconel 738LC:** Comparable temperature resistance with improved castability **Performance Comparison:** * **Temperature Capability:** Superior to Nimonic 105, comparable to Waspaloy * **Strength Level:** Higher than Inconel 718, comparable to Udimet 720 * **Oxidation Resistance:** Better than most 1000°C capable superalloys * **Fabricability:** Good forgeability, requires specialized welding techniques **Selection Considerations:** * **Temperature Requirements:** Optimal performance 800-1000°C * **Stress Levels:** High stress rupture strength required * **Oxidation Resistance:** Critical for long-term exposure * **Fabrication Needs:** Requires specialized heat treatment * **Cost Considerations:** Premium material for critical applications --- #### **6. Product Applications** Nimonic 115 serves critical functions across multiple high-technology industries: * **Aerospace & Defense:** * High-pressure turbine blades and vanes * Turbine discs and shafts * Combustion chamber components * Afterburner parts * Rocket engine components * **Power Generation:** * Industrial gas turbine hot section parts * Turbine discs and blades * High-temperature fasteners * Combustion system components * Advanced steam turbine components * **Industrial Processing:** * Heat treatment fixtures and baskets * High-temperature tooling * Chemical processing equipment * Nuclear reactor components * Specialized manufacturing equipment --- #### **7. Quality & Certification** **Standard Certifications:** * **Material Test Certificate 3.1** per EN 10204 * **Chemical Analysis Certificate** with full traceability * **Mechanical Properties Report** at room and elevated temperatures * **Non-Destructive Testing Reports** * **Heat Treatment Compliance Records** **Testing Standards:** * **Ultrasonic Testing:** ASTM A388, EN 10160 * **Dye Penetrant:** ASTM E165, EN 571-1 * **Chemical Analysis:** ASTM E1473, EN 10276-2 * **Mechanical Testing:** ASTM E8/E21, EN 10002 * **Creep Testing:** ASTM E139, EN 10291 --- #### **8. Special Processing Requirements** **Heat Treatment:** * Solution Treatment: 1180°C ± 10°C * Aging: Multi-stage process for optimal γ' precipitation * Cooling Rate: Critical for properties development **Welding Considerations:** * **Process:** GTAW with matching filler wire * **Pre/Post Weld Heat Treatment:** Required for property restoration * **Welder Qualification:** Special certification needed --- **Summary** **Alloy 115 (Nimonic 115, UNS N07115)** represents an advanced class of nickel-based superalloys with comprehensive international qualification and widespread acceptance in the most demanding high-temperature applications. Its enhanced composition provides superior creep resistance, oxidation stability, and mechanical strength compared to earlier generations, making it particularly suitable for rotating components in advanced gas turbine engines operating at extreme temperatures. The alloy's compliance with multiple international standards including AMS 5801, ASTM B637, EN 10302, and various OEM specifications ensures global availability and consistent quality. Understanding the various specifications and equivalents allows engineers to effectively specify, qualify, and substitute this material for critical applications across different regions and industries. With proven performance in extreme temperature environments reaching 1000°C and extensive documentation of long-term service behavior, Nimonic 115 continues to be a benchmark material for applications demanding maximum temperature capability, extended service life, and absolute reliability in the most severe operating 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 2154 gallon liquid totes Special package is available on request.