Alloy 75,Nimonic 75 Fittings,UNS N06075,E FORU

British Specs:BS HR5 Alloy 75 Bar BS HR203 Alloy 75 sheet BS HR403 Alloy 75 tube* BS HR504 Alloy 75 Bar (rivet)，American Specs:，German Specs:WS 2.4630 WS 2.4951,AFNOR NC 20T

### **Product Datasheet: Alloy 75 / Nimonic 75 Fittings (UNS N06075)** **Alloy 75** (commercially known as **Nimonic 75**) fittings are precision-engineered components manufactured from nickel-chromium alloy, designed for high-temperature piping systems requiring excellent oxidation resistance and reliable performance at elevated temperatures up to 950°C. These fittings provide dependable service in aerospace, power generation, and industrial heating applications where system integrity under high-temperature conditions is critical. --- #### **1. Chemical Composition** The chemical composition of Nimonic 75 fittings ensures optimal high-temperature performance: | Element | Content (%) | |:---|:---| | **Nickel (Ni)** | Balance | | **Chromium (Cr)** | 18.0 - 21.0 | | **Iron (Fe)** | 3.0 - 5.0 | | **Titanium (Ti)** | 0.2 - 0.6 | | **Carbon (C)** | 0.08 - 0.15 | | **Manganese (Mn)** | 1.0 max | | **Silicon (Si)** | 1.0 max | | **Copper (Cu)** | 0.5 max | | **Sulfur (S)** | 0.015 max | *Note: The balanced composition provides excellent oxidation resistance through chromium content while maintaining good high-temperature strength and weldability in fitting applications.* --- #### **2. Physical Properties** Nimonic 75 fittings exhibit consistent physical properties: | Property | Value | |:---|:---| | **Density** | 8.31 g/cm³ (0.300 lb/in³) | | **Melting Range** | 1380 - 1425°C (2516 - 2597°F) | | **Coefficient of Thermal Expansion** | 14.5 × 10⁻⁶/°C (20-100°C) | | **Thermal Conductivity** | 12.0 W/m·K (at 100°C) | | **Specific Heat** | 460 J/kg·K (at 100°C) | | **Modulus of Elasticity** | 214 GPa (31 × 10⁶ psi) | | **Magnetic Permeability** | <1.01 (essentially non-magnetic) | --- #### **3. Mechanical Properties** **Standard Mechanical Properties (Solution Annealed Condition):** | Property | Value | |:---|:---| | **Tensile Strength** | 690 MPa (100 ksi) min | | **Yield Strength (0.2% Offset)** | 310 MPa (45 ksi) min | | **Elongation** | 45% min | | **Reduction of Area** | 60% min | | **Hardness** | 85 HRB max | | **Impact Strength (Charpy V-Notch)** | 80 J min | **Pressure Ratings:** - **Working Pressure:** Up to 5,000 psi depending on fitting type and size - **Temperature Range:** Up to 950°C (1742°F) - **Safety Factor:** 4:1 minimum burst pressure to working pressure --- #### **4. Product Specifications** **Available Fitting Types:** - **Butt Weld Fittings:** Elbows 45°/90°/180°, tees, reducers, caps - **Socket Weld Fittings:** Unions, elbows, tees, couplings - **Threaded Fittings:** NPT, BSPT, BSPP threads - **Flanged Components:** Blind flanges, orifice flanges - **Special Fittings:** Instrumentation and high-temperature fittings **Size Ranges:** - **Butt Weld:** 1/8" to 24" NPS - **Socket Weld:** 1/8" to 4" NPS - **Threaded:** 1/8" to 2" NPS - **Pressure Classes:** 150# to 1500# --- #### **5. Product Applications** **Aerospace Industry:** - **Engine Exhaust Systems:** High-temperature ducting fittings - **Fuel System Components:** High-temperature fuel line fittings - **Hydraulic Systems:** Elevated temperature hydraulic fittings - **Bleed Air Systems:** Hot air system connections **Power Generation:** - **Gas Turbine Systems:** Combustion air and exhaust fittings - **Heat Recovery Systems:** High-temperature ductwork fittings - **Boiler Systems:** Superheater and reheater connections - **Nuclear Applications:** High-temperature utility fittings **Industrial Processing:** - **Heat Treatment Furnaces:** Protective atmosphere gas line fittings - **Chemical Processing:** High-temperature reactor connections - **Glass Manufacturing:** Furnace fuel and combustion system fittings - **Ceramic Industry:** Kiln exhaust and fuel supply fittings **Petrochemical Industry:** - **Furnace Piping:** High-temperature process fittings - **Reformer Systems:** Process gas transfer line fittings - **Heater Systems:** Direct fired heater connections --- #### **6. International Standards** **Material Standards:** - **UNS N06075**: Unified Numbering System designation - **ASTM B366**: Standard Specification for Factory-Made Wrought Nickel Alloy Fittings - **ASTM B564**: Standard Specification for Nickel Alloy Forgings - **ASME SB366**: ASME Boiler and Pressure Vessel Code - **AMS 5755**: Aerospace Material Specification **Dimensional Standards:** - **ASME B16.9**: Factory-Made Wrought Buttwelding Fittings - **ASME B16.11**: Forged Steel Fittings, Socket-Welding and Threaded - **ASME B16.5**: Pipe Flanges and Flanged Fittings - **ISO 9001**: Quality Management Systems **Industry Specifications:** - **ASME B31.1**: Power Piping Code - **ASME B31.3**: Process Piping Code - **PED 2014/68/EU**: Pressure Equipment Directive --- #### **7. Heat Treatment** **Solution Annealing:** - **Temperature Range:** 1150-1180°C (2100-2150°F) - **Cooling Method:** Rapid air cool or water quench - **Purpose:** To dissolve precipitated phases and optimize high-temperature properties **Stress Relieving:** - **Temperature:** 850-900°C (1560-1650°F) - **Time:** 1-2 hours per inch of thickness - **Purpose:** To relieve stresses from manufacturing processes --- #### **8. Oxidation & Corrosion Resistance** **Excellent Performance In:** - **High-Temperature Oxidation:** Up to 950°C continuous service - **Sulfur-Containing Atmospheres:** Good resistance to sulfidation - **Carburizing Environments:** Moderate resistance - **Thermal Cycling:** Good resistance to thermal fatigue **Oxidation Performance Data:** - **Continuous Service Temperature:** Up to 950°C (1742°F) - **Oxidation Rate:** <0.1 mm/year at 900°C (1652°F) - **Scale Adherence:** Excellent, with protective chromia scale formation --- #### **9. Manufacturing Processes** **Fabrication Methods:** - **Hot Forging:** For superior grain structure and strength - **Precision Machining:** From bar stock or forgings - **Investment Casting:** For complex geometries - **Fabrication:** From pipe and plate materials **Quality Processes:** - **Solution Annealing:** 1150-1180°C (2100-2150°F) + rapid quench - **Surface Treatment:** Pickling, passivation - **Non-Destructive Testing:** RT, UT, MT, PT as required - **Dimensional Inspection:** 100% dimensional verification --- #### **10. Installation & Maintenance** **Welding Procedures:** - **Recommended Processes:** GTAW (preferred), GMAW - **Filler Metal:** AWS A5.14 ERNiCr-3 - **Preheat:** Generally not required - **Interpass Temperature:** <150°C - **Post-Weld Heat Treatment:** Recommended for critical applications **Installation Guidelines:** - **Alignment:** Proper alignment to prevent stress concentration - **Support:** Adequate piping support near fittings - **Gasket Selection:** Appropriate for high-temperature service - **Bolt Torque:** Proper sequencing and torque values --- #### **11. Quality Assurance** **Testing & Certification:** - **Material Certification:** EN 10204 3.1/3.2 - **Chemical Analysis:** Verified composition - **Mechanical Testing:** Tensile, hardness, impact tests - **Non-Destructive Examination:** RT, UT, MT, PT as specified - **Pressure Testing:** Hydrostatic or pneumatic testing - **Dimensional Inspection:** To specified tolerances **Traceability Requirements:** - **Heat Number Traceability:** Full material history - **Process Control:** Documented manufacturing processes - **Final Inspection:** Comprehensive quality verification - **Certification Packages:** Complete documentation provided --- #### **12. Key Advantages** * **Excellent High-Temperature Strength:** Maintains mechanical properties at elevated temperatures * **Superior Oxidation Resistance:** Outstanding performance up to 950°C * **Reliable Performance:** Proven in high-temperature service applications * **Industry Compliance:** Meets major international standards and specifications * **Good Weldability:** Suitable for various welding processes * **Long Service Life:** Reduced maintenance and replacement costs * **Quality Assurance:** Comprehensive testing and certification * **Global Availability:** Standard and custom fittings available Nimonic 75 fittings provide engineers and operators with reliable, high-performance connection solutions for high-temperature piping systems, offering exceptional oxidation resistance and maintained mechanical properties under challenging operating conditions in aerospace, power generation, and industrial processing applications.

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 2048 gallon liquid totes Special package is available on request.