Alloy 115,Nimonic 115 Pipe,,E FORU

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

### **Product Data Sheet: Alloy 115 / Nimonic 115 Pipe (UNS N07115)** **Overview** **Alloy 115** (commercially known as **Nimonic 115**) is an advanced precipitation-hardenable nickel-chromium-cobalt superalloy designed for extreme temperature service. In the form of **pipe**, this material delivers **exceptional creep strength, outstanding oxidation resistance, and superior pressure containment capability** at temperatures up to 1000°C (1830°F). Nimonic 115 pipe is engineered for high-temperature, high-pressure applications where conventional materials would fail. The pipe form maintains the alloy's characteristic high-temperature strength while providing reliable fluid and gas conveyance under extreme thermal and mechanical stress conditions in the most demanding environments. --- #### **1. Chemical Composition** | Element | Content (%) (Typical) | Role in the Alloy | | :--- | :--- | :--- | | **Nickel (Ni)** | Balance | Austenitic matrix; provides corrosion resistance and ductility | | **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 Condition)** * **Tensile Strength:** 1100-1300 MPa (160-188 ksi) * **Yield Strength (0.2% Offset):** 800-950 MPa (116-138 ksi) * **Elongation:** 8-15% **Pressure Rating:** * **Maximum Working Pressure:** Temperature-dependent design * **Burst Pressure:** Typically 3-4 times maximum working pressure * **Design Standards:** ASME B31.1, B31.3 applicable --- #### **4. Product Specifications** **Pipe Types Available:** * **Seamless Pipe** - For high-pressure, high-temperature service * **Welded and Redrawn Pipe** - For specific applications * **Heavy Wall Pipe** - For extreme pressure conditions **Standard Sizes:** * **Outside Diameter:** 6mm to 300mm (0.25" to 12") * **Wall Thickness:** Schedule 5S to XXS * **Length:** Random lengths 3-7 meters, cut lengths available **Wall Thickness Tolerances:** * **Seamless Pipe:** ±12.5% of nominal wall thickness * **Special Precision:** ±10% available --- #### **5. Key Characteristics** * **Enhanced Temperature Capability:** Superior performance up to 1000°C * **Excellent Creep Strength:** Outstanding stress rupture properties under pressure * **Superior Oxidation Resistance:** Extended service life in oxidizing environments * **Pressure Integrity:** Reliable performance in high-pressure systems * **Thermal Fatigue Resistance:** Excellent performance under thermal cycling conditions * **Good Weldability:** Can be welded using GTAW with matching filler metal * **Microstructural Stability:** Maintains properties during long-term exposure --- #### **6. Product Applications** Nimonic 115 pipe is specified for critical high-temperature piping systems: * **Aerospace & Gas Turbine Engines:** * **High-pressure fuel lines** * **Hot gas path components** * **Exhaust gas manifolds** * **Afterburner fuel piping** * **Turbine cooling systems** * **Power Generation:** * **Advanced gas turbine fuel systems** * **High-temperature steam lines** * **Heat recovery system piping** * **Turbine bypass systems** * **Superheater and reheater connections** * **Industrial Processing:** * **High-temperature chemical processing lines** * **Heat treatment furnace piping** * **Thermal oil systems** * **Pyroprocessing gas conduits** * **Reactor and vessel connections** * **Nuclear Applications:** * **High-temperature gas-cooled reactor systems** * **Nuclear process piping** --- #### **7. International Standards** | Standard Type | Standard Number | Description | | :--- | :--- | :--- | | **Unified Numbering System** | **UNS N07115** | All product forms | | **ASTM** | **ASTM B829** | Standard Specification for Seamless Nickel and Nickel Alloy Pipe | | **ASTM** | **ASTM B775/B776** | General Requirements for Nickel Alloy Pipe and Tube | | **Aerospace (SAE/AMS)** | **AMS 5581** | Seamless Pipe and Tubing | | **European** | **EN 10302** | Nickel and cobalt alloys | | **Werkstoff Nr.** | **2.4958** | Material number | | **ISO** | **ISO 6207** | Nickel alloy pipe and tube specifications | | **ASME** | **SB-829** | ASME Code Case for pressure applications | --- #### **8. Fabrication & Welding** **Welding Requirements:** * **Process:** GTAW (TIG) preferred * **Filler Metal:** Matching composition or AWS A5.14 ERNiCrMo-XX * **Preheat:** Generally not required * **Post-Weld Heat Treatment:** Full solution and age treatment recommended **Forming & Bending:** * **Hot Forming:** 1050-1150°C * **Cold Forming:** Possible with proper tooling * **Bending Radius:** Minimum 3x pipe diameter --- **Summary** **Alloy 115 Pipe (Nimonic 115, UNS N07115)** represents the ultimate solution for high-temperature, high-pressure piping systems where reliability and performance are critical. Its exceptional creep strength, oxidation resistance, and pressure containment capability at temperatures up to 1000°C make it indispensable for advanced aerospace propulsion systems, next-generation power generation equipment, and demanding industrial processes. The pipe form maintains consistent wall thickness and dimensional accuracy while providing the superior high-temperature properties that make Nimonic 115 a preferred choice for extreme service conditions. Compliance with international standards including ASTM B829, AMS 5581, and ASME specifications ensures consistent quality and reliability for the most demanding high-temperature applications. Proper fabrication and welding techniques ensure optimal performance throughout the service life of the piping system.

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 2147 gallon liquid totes Special package is available on request.