Alloy X750，Inconel X750 Pipe，UNS N07750，EFORU

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 Pipe (UNS N07750)** #### **Overview** **Alloy X-750 Pipe** (commercially known as **Inconel® X-750 Pipe**) is a high-performance nickel-chromium alloy piping product specifically engineered for applications requiring excellent strength and oxidation resistance at temperatures up to 700°C (1300°F). This precipitation-hardenable alloy pipe maintains outstanding mechanical properties under high-temperature conditions and offers good creep rupture strength, making it ideal for aerospace, nuclear, and industrial applications where reliability in demanding thermal environments is crucial. The pipe is manufactured through advanced thermo-mechanical processes and controlled heat treatments to ensure uniform microstructure, consistent wall thickness, and reliable performance in high-temperature service conditions. --- #### **Chemical Composition** The chemical composition of Alloy X-750 Pipe (UNS N07750) is carefully balanced for optimal performance: | 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 piping system design and 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% * **Hardness:** 32-40 HRC **Pressure Performance:** * **Maximum Working Pressure:** Varies with pipe size and wall thickness * **Temperature Rating:** Up to 700°C (1300°F) continuous service * **Burst Pressure:** Excellent resistance to internal pressure deformation --- #### **International Standards** Alloy X-750 Pipe conforms to several international specifications: **ASTM Standards:** * **ASTM B829:** Standard Specification for Seamless Nickel and Nickel Alloy Pipe and Tube * **ASTM B705:** Standard Specification for Nickel-Alloy Welded Pipe **ASME Standards:** * **ASME SB829:** Specification for Seamless Nickel and Nickel Alloy Pipe and Tube * **ASME SB705:** Nickel-Alloy Welded Pipe **Other International Standards:** * **ISO 6207:** Nickel and nickel alloy pipes * **DIN 17750:** Nickel and nickel alloy pipes - Technical delivery conditions * **GB/T 2882:** Chinese standard for nickel and nickel alloy pipes --- #### **Product Applications** Alloy X-750 pipes serve critical functions across multiple high-performance industries: **Aerospace & Defense:** * **Aircraft Systems:** High-temperature hydraulic lines, fuel system components * **Engine Systems:** Bleed air ducts, lubrication systems, exhaust components * **Rocket Systems:** Propellant feed lines, cooling channels, thrust vector controls * **Space Vehicles:** High-temperature fluid transfer lines **Nuclear Industry:** * **Reactor Systems:** Primary coolant pipes, instrument tubing * **Control Systems:** Control rod drive mechanism piping * **Safety Systems:** Emergency cooling system piping **Power Generation:** * **Gas Turbines:** Fuel gas piping, hydraulic control lines * **Heat Exchangers:** High-temperature heat exchanger tubes * **Steam Systems:** High-pressure steam lines **Industrial Applications:** * **Heat Treatment:** Furnace radiant tubes, heat treatment fixtures * **Chemical Processing:** High-temperature process piping * **Test Facilities:** High-temperature test loop piping --- #### **Key Advantages** * **High Temperature Strength:** Maintains mechanical properties up to 700°C (1300°F) * **Excellent Oxidation Resistance:** Outstanding performance in oxidizing atmospheres * **Good Creep Resistance:** Maintains integrity under sustained load at high temperatures * **Corrosion Resistance:** Good resistance to various corrosive environments * **Pressure Integrity:** Excellent resistance to internal and external pressure deformation * **Good Fabricability:** Can be bent, formed, and welded using standard pipe working equipment * **Excellent Weldability:** Can be welded using conventional methods with proper technique * **Long Service Life:** Maintains performance in high-temperature environments **Available Forms & Sizes:** * **Seamless Pipe:** OD from 6mm to 400mm (0.25" to 16") * **Welded Pipe:** OD from 6mm to 1200mm (0.25" to 48") * **Wall Thickness:** Schedule 5S to XXS, custom thickness available * **Lengths:** Random lengths, double random, or cut-to-size **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:** * **Hydrostatic Testing:** Pressure testing to specified requirements * **Non-Destructive Examination:** Ultrasonic, radiographic, or dye penetrant testing * **Dimensional Inspection:** Comprehensive measurement verification * **Material Certification:** Complete traceability and compliance documentation **Note:** *Inconel® is a registered trademark of Special Metals Corporation. Alloy X-750 pipes are available in seamless and welded configurations, with various schedules and sizes to meet specific application requirements. Proper installation, including appropriate support and expansion considerations, is essential for optimal performance in high-temperature service. Comprehensive certification including chemical analysis, mechanical properties, and non-destructive testing reports are provided for 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 1822 gallon liquid totes Special package is available on request.