Alloy 115,Nimonic 115 ,,E FORU

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

### **Product Data Sheet: Alloy 115 / Nimonic 115 (UNS N07115)** **Overview** **Alloy 115** (commercially known as **Nimonic 115**) is a precipitation-hardenable nickel-chromium-cobalt superalloy designed for superior high-temperature performance. It represents a significant advancement in high-temperature capability, offering **exceptional creep strength, outstanding oxidation resistance, and excellent microstructural stability** at temperatures up to 1000°C (1830°F). Developed as an advanced turbine blade material, Nimonic 115 provides enhanced temperature capability and stress rupture strength compared to earlier nickel-based superalloys, making it suitable for the most demanding high-temperature applications in aerospace and power generation. --- #### **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 | | | 160 GPa (23.2 × 10⁶ psi) @ 800°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. Key Characteristics** * **Enhanced Temperature Capability:** Superior performance up to 1000°C * **Excellent Creep Strength:** Outstanding stress rupture properties * **Superior Oxidation Resistance:** Extended service life in oxidizing environments * **Microstructural Stability:** Maintains properties during long-term exposure * **Optimized γ' Content:** Balanced aluminum and titanium for optimal precipitation hardening * **Good Thermal Fatigue Resistance:** Performs well under thermal cycling conditions --- #### **5. Product Applications** Nimonic 115 is primarily used in high-stress, high-temperature components: * **Aerospace & Gas Turbine Engines:** * **High-pressure turbine blades** * **Turbine vanes and nozzles** * **Rotor discs and spacers** * **Combustion chamber components** * **Afterburner parts** * **Power Generation:** * **Industrial gas turbine blades** * **Turbine discs and shafts** * **High-temperature fasteners** * **Combustion system components** * **Industrial Processing:** * **Heat treatment fixtures** * **High-temperature tooling** * **Chemical processing equipment** --- #### **6. International Standards** | Standard Type | Standard Number | Description | | :--- | :--- | :--- | | **Unified Numbering System** | **UNS N07115** | All product forms | | **Aerospace (SAE/AMS)** | **AMS 5801** | Bar, forgings, and rings | | **British Standard** | **BS HR 7** | Sheet, strip, and plate | | **European** | **EN 10302** | Nickel and cobalt alloys | | **Werkstoff Nr.** | **2.4958** | Material number | | **ISO** | **ISO 9726** | Nickel alloy specifications | --- #### **7. Heat Treatment** **Solution Treatment:** * 1180°C ± 10°C, followed by rapid cooling **Aging Treatment:** * 1050°C ± 10°C, air cool * 850°C ± 10°C, 16 hours, air cool * 700°C ± 10°C, 16 hours, air cool --- **Summary** **Alloy 115 (Nimonic 115, UNS N07115)** represents an advanced class of nickel-based superalloys optimized for the highest temperature applications in gas turbine engines and power generation equipment. Its enhanced composition provides superior creep strength and oxidation resistance compared to earlier generations, making it particularly suitable for high-pressure turbine blades and other critically stressed components operating at extreme temperatures. The alloy's compliance with major international standards including AMS 5801, BS HR 7, and EN 10302 ensures consistent quality and reliability for critical aerospace and industrial applications. With proven performance in extreme temperature environments and extensive documentation of long-term service behavior, Nimonic 115 continues to be a preferred choice for applications demanding maximum temperature capability and extended service life.

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 2144 gallon liquid totes Special package is available on request.