Alloy X750,Inconel X750 Fittings,UNS N07750,E FORU

British Specs:，American Specs:AMS 5542 Sheet, Strip and Plate AMS 5582 Seamless Tube AMS 5583 Seamless Tube AMS 5747 Bar and Forgings AMS 5779 Welding Electrodes AMS 5598 Sheet, Strip and Plate AMS 5667 Bar and Forgings AMS 5668 Bar and Forgings AMS 5669 Bar AMS 5670 Bar and Forgings AMS 5671 Bar and Forgings AMS 5698 Wire AMS 5699 Wire，German Specs:WS 2.4669

### **Product Introduction: Alloy X-750 / Inconel X-750 Fittings (UNS N07750)** #### **Overview** **Alloy X-750 Fittings** (commercially known as **Inconel® X-750 Fittings**) are precision-engineered components designed for high-temperature piping and tubing systems operating in demanding environments up to 700°C (1300°F). These fittings leverage the exceptional properties of Alloy X-750, including excellent strength retention, good corrosion resistance, and outstanding oxidation resistance at elevated temperatures. Manufactured through advanced forging and machining processes, Inconel X-750 fittings maintain structural integrity and reliable performance in critical aerospace, nuclear, and industrial applications where thermal stability and mechanical strength are paramount. --- #### **Chemical Composition** The chemical composition of Alloy X-750 Fittings (UNS N07750) conforms to strict international standards: | Element | Content (%) | |---------|-------------| | **Nickel (Ni)** | 70.0 min | | **Chromium (Cr)** | 14.0 - 17.0 | | **Iron (Fe)** | 5.0 - 9.0 | | **Titanium (Ti)** | 2.25 - 2.75 | | **Copper (Cu)** | 0.50 max | | **Aluminum (Al)** | 0.40 - 1.00 | | **Niobium (Nb)** | 0.70 - 1.20 | | **Carbon (C)** | 0.08 max | | **Manganese (Mn)** | 1.00 max | | **Silicon (Si)** | 0.50 max | | **Sulfur (S)** | 0.01 max | *The alloy is strengthened by precipitation of gamma prime [γ'-Ni₃(Al,Ti)] phase during aging treatment.* --- #### **Physical Properties** Critical properties for fitting design and system engineering: | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Density** | 8.28 g/cm³ | 0.298 lb/in³ | | **Melting Range** | 1390 - 1430 °C | 2530 - 2600 °F | | **Specific Heat (20°C)** | 431 J/kg·K | 0.103 Btu/lb·°F | | **Thermal Conductivity (20°C)** | 11.8 W/m·K | 81.9 Btu·in/hr·ft²·°F | | **Thermal Expansion Coefficient (20-100°C)** | 12.8 μm/m·°C | 7.1 μin/in·°F | | **Modulus of Elasticity** | 214 GPa | 31.0 x 10⁶ psi | | **Electrical Resistivity** | 1.22 μΩ·m | - | --- #### **Mechanical Properties** Enhanced mechanical properties achieved through optimized heat treatment: **Solution Annealed + Aged Condition:** * **Ultimate Tensile Strength:** 1030-1240 MPa (150-180 ksi) * **Yield Strength (0.2% Offset):** 690-860 MPa (100-125 ksi) * **Elongation:** 15-25% * **Reduction of Area:** 25-35% * **Hardness:** 32-40 HRC **Pressure Performance:** * **Maximum Working Pressure:** Varies with fitting design and size * **Temperature Rating:** Up to 700°C (1300°F) continuous service * **Burst Pressure:** Excellent resistance to pressure deformation --- #### **International Standards** Alloy X-750 Fittings conform to numerous international specifications: **Dimensional Standards:** * **ASME B16.11:** Forged Fittings, Socket-Welding and Threaded * **MSS SP-79:** Socket-Welding Reducer Inserts * **MSS SP-97:** Integrally Reinforced Forged Branch Outlet Fittings **Material Standards:** * **ASTM B564:** Standard Specification for Nickel Alloy Forgings * **ASTM B637:** Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock **Quality Standards:** * **ISO 9001:** Quality Management Systems * **ASME BPVC:** Boiler and Pressure Vessel Code * **NADCAP:** National Aerospace and Defense Contractors Accreditation Program --- #### **Product Applications** Alloy X-750 fittings serve critical functions across multiple high-performance industries: **Aerospace & Defense:** * **Aircraft Systems:** High-temperature hydraulic fittings, fuel system connectors * **Engine Systems:** Bleed air duct fittings, lubrication system components * **Rocket Systems:** Propellant feed line fittings, cooling system connectors * **Space Vehicles:** High-temperature fluid transfer line fittings **Nuclear Industry:** * **Reactor Systems:** Primary coolant system fittings, instrument connections * **Control Systems:** Control rod drive mechanism piping fittings * **Safety Systems:** Emergency cooling system fittings **Power Generation:** * **Gas Turbines:** Fuel system fittings, hydraulic control connectors * **Heat Exchangers:** Tube fittings, header connections, bundle fittings * **Steam Systems:** High-pressure steam line fittings **Industrial Applications:** * **Heat Treatment:** Furnace gas system fittings, quenching system components * **Chemical Processing:** High-temperature process piping fittings * **Test Facilities:** High-temperature test loop fittings --- #### **Key Advantages** * **High Temperature Strength:** Maintains mechanical properties up to 700°C (1300°F) * **Excellent Creep Resistance:** Good stress rupture properties at elevated temperatures * **Good Oxidation Resistance:** Resists scaling and oxidation in high-temperature service * **Corrosion Resistance:** Good resistance to various corrosive environments * **Excellent Weldability:** Can be welded to similar and dissimilar materials using conventional methods * **Superior Fatigue Performance:** Excellent resistance to vibration and pressure cycling * **Dimensional Stability:** Maintains precise tolerances under thermal cycling conditions * **Long Service Life:** Maintains performance in high-temperature environments over extended periods **Available Fitting Types:** * **Socket Weld Fittings:** Elbows, tees, couplings, unions, caps * **Threaded Fittings:** NPT, BSPT, BSPP thread configurations * **Butt Weld Fittings:** Elbows, tees, reducers, caps, stub ends * **Special Fittings:** Crosses, laterals, outlet fittings, custom designs **Heat Treatment Specifications:** * **Solution Treatment:** 1150-1200°C (2100-2200°F) followed by rapid cooling * **Aging Treatment:** 705-730°C (1300-1350°F) for 16-20 hours, air cool * **Stress Relieving:** Available for welded components **Quality Assurance:** * **Material Certification:** Complete traceability and compliance documentation * **Dimensional Inspection:** 100% verification to specified standards * **Surface Examination:** Visual and liquid penetrant testing * **Pressure Testing:** Hydrostatic and pneumatic testing capabilities * **Non-Destructive Testing:** Ultrasonic, radiographic examination as required **Note:** *Inconel® is a registered trademark of Special Metals Corporation. Alloy X-750 fittings are typically supplied in the solution treated and aged condition to meet specific application requirements. Proper installation techniques and torque specifications must be followed to ensure optimal performance and system integrity. Comprehensive certification packages including chemical analysis, mechanical properties, and non-destructive testing reports are provided for all critical 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 1827 gallon liquid totes Special package is available on request.