Alloy 105,Nimonic 105 Fittings,,E FORU

British Specs:BS HR3，American Specs:，German Specs:WS 2.4634,AFNOR NCKD 20ATv

### **Product Data Sheet: Alloy 105 / Nimonic 105 Fittings (UNS N07105)** **Overview** **Alloy 105** (commercially known as **Nimonic 105**) is a precipitation-hardenable nickel-chromium-cobalt superalloy specifically engineered for high-temperature service. In the form of **fittings**, this material provides exceptional **creep strength, excellent oxidation resistance, and reliable performance** in high-temperature piping and tubing systems operating up to 950°C (1740°F). Nimonic 105 fittings are precision-manufactured to ensure leak-proof connections and long-term reliability in extreme thermal environments. These components maintain structural integrity under combined thermal, pressure, and mechanical stresses, making them essential for critical high-temperature fluid and gas handling systems. --- #### **1. Chemical Composition** | Element | Content (%) (Typical) | Role in the Alloy | | :--- | :--- | :--- | | **Nickel (Ni)** | Balance | Austenitic matrix former; provides corrosion resistance and ductility | | **Chromium (Cr)** | 14.0 - 15.7 | Confers oxidation and hot corrosion resistance | | **Cobalt (Co)** | 18.0 - 22.0 | Solid solution strengthener; enhances high-temperature strength | | **Molybdenum (Mo)** | 4.5 - 5.5 | Provides solid solution strengthening and creep resistance | | **Aluminum (Al)** | 4.5 - 4.9 | Primary precipitation hardener (forms γ' phase, Ni₃Al) | | **Titanium (Ti)** | 0.9 - 1.5 | Secondary precipitation hardener; contributes to γ' formation | | **Carbon (C)** | 0.12 - 0.20 | Forms carbides for grain boundary strength | | **Boron (B)** | 0.005 - 0.015 | Strengthens grain boundaries and improves creep life | | **Zirconium (Zr)** | 0.05 - 0.15 | Enhances creep rupture properties | | **Manganese (Mn)** | 0.50 max | Controls sulfur content | | **Silicon (Si)** | 0.60 max | Improves oxidation resistance | | **Iron (Fe)** | 1.0 max | Residual element | --- #### **2. Physical Properties** | Property | Value / Condition | | :--- | :--- | | **Density** | 8.06 g/cm³ (0.291 lb/in³) | | **Melting Range** | 1330 - 1360°C (2425 - 2480°F) | | **Specific Heat** | 455 J/kg·K (0.109 Btu/lb·°F) @ 20°C | | **Thermal Conductivity** | 11.5 W/m·K (79.7 Btu·in/hr·ft²·°F) @ 20°C | | **Mean Coefficient of Thermal Expansion** | 12.8 × 10⁻⁶/°C (20-100°C) | | | 16.2 × 10⁻⁶/°C (20-800°C) | | **Electrical Resistivity** | 1.28 μΩ·m @ 20°C | | **Modulus of Elasticity** | 214 GPa (31.0 × 10⁶ psi) @ 20°C | --- #### **3. Mechanical Properties** **Typical Room Temperature Properties (Solution Treated & Aged)** * **Tensile Strength:** 1000-1200 MPa (145-174 ksi) * **Yield Strength (0.2% Offset):** 700-850 MPa (102-123 ksi) * **Elongation:** 10-20% **Pressure Rating:** * **Maximum Working Pressure:** Varies with temperature and fitting design * **Burst Pressure:** Typically 3-4 times maximum working pressure --- #### **4. Product Types & Specifications** **Fitting Types Available:** * **Butt-Weld Fittings:** Elbows, tees, reducers, caps * **Socket-Weld Fittings:** Unions, elbows, tees * **Threaded Fittings:** Nipples, couplings, adapters * **Flanged Components:** Special high-temperature flanges **Size Range:** * **Butt-Weld:** 1/2" to 12" NB (Nominal Bore) * **Socket-Weld:** 1/8" to 2" NB * **Threaded:** 1/8" to 2" NB **Standards Compliance:** * ASME B16.9, B16.11, B16.28 * MSS SP-43, SP-97 * Customer-specific specifications --- #### **5. Key Characteristics** * **Exceptional High-Temperature Strength:** Maintains mechanical integrity under thermal cycling * **Superior Creep Resistance:** Withstands prolonged stress at temperatures up to 950°C * **Excellent Oxidation Resistance:** Protective chromium oxide layer prevents degradation * **Thermal Fatigue Resistance:** Excellent performance under thermal cycling conditions * **Good Weldability:** Compatible with standard welding processes using matching filler metals * **Pressure Integrity:** Reliable performance in high-pressure systems * **Dimensional Stability:** Maintains shape and dimensions under thermal stress --- #### **6. Product Applications** Nimonic 105 fittings are essential for high-temperature piping systems: * **Aerospace & Gas Turbine Engines:** * **Fuel system components** * **Hydraulic and lube oil systems** * **Bleed air ducting** * **Exhaust system connections** * **Afterburner fuel piping** * **Power Generation:** * **Gas turbine fuel gas systems** * **High-temperature steam lines** * **Heat recovery system piping** * **Turbine bypass systems** * **Boiler and steam turbine connections** * **Industrial Processing:** * **High-temperature chemical processing lines** * **Heat treatment furnace piping** * **Thermal oil systems** * **Pyroprocessing gas conduits** * **Oil & Gas:** * **High-temperature wellhead components** * **Processing plant high-temperature lines** --- #### **7. International Standards** | Standard Type | Standard Number | Description | | :--- | :--- | :--- | | **Unified Numbering System** | **UNS N07105** | All product forms | | **ASTM** | **ASTM B366** | Standard Specification for Factory-Made Wrought Nickel Alloy Fittings | | **ASTM** | **ASTM B462** | Standard Specification for Forged or Rolled Nickel Alloy Pipe Flanges | | **Aerospace (SAE/AMS)** | **AMS 5800** | Bar and Forging Stock (Base material for fittings) | | **European** | **EN 10253** | Butt-welding pipe fittings | | **Werkstoff Nr.** | **2.4634** | Material number | | **ASME** | **SB-366** | ASME Code Case for pressure applications | --- **Summary** **Alloy 105 Fittings (Nimonic 105, UNS N07105)** provide reliable, high-performance connections for critical high-temperature piping systems. Their exceptional creep strength, oxidation resistance, and pressure integrity at temperatures up to 950°C make them indispensable for aerospace propulsion systems, power generation equipment, and demanding industrial processes. Manufactured to international standards including ASTM B366, ASME SB-366, and EN 10253, these fittings ensure consistent quality and reliability for the most demanding high-temperature applications. The combination of superior high-temperature properties and precise manufacturing makes Nimonic 105 fittings the preferred choice for engineers designing systems that must operate reliably under extreme thermal 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 2139 gallon liquid totes Special package is available on request.