Alloy X750，Inconel X750 Rod，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 Rod (UNS N07750)** #### **Overview** **Alloy X-750 Rod** (commercially known as **Inconel® X-750 Rod**) is a precipitation-hardenable nickel-chromium alloy supplied in rod form, renowned for its excellent combination of high strength, good corrosion resistance, and outstanding oxidation resistance up to 700°C (1300°F). This age-hardenable superalloy rod maintains superior mechanical properties under high-temperature conditions and offers excellent creep rupture strength, making it particularly suitable for aerospace, nuclear, and industrial applications requiring robust performance in demanding environments. The rod product is manufactured through controlled hot working processes and precise heat treatments to ensure uniform grain structure, consistent mechanical properties, and reliable performance in critical applications. --- #### **Chemical Composition** The chemical composition of Alloy X-750 Rod (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 rod design and manufacturing 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 (AMS 5668):** * **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 **Elevated Temperature Performance:** * **0.2% Yield Strength at 650°C (1200°F):** ≥ 620 MPa (90 ksi) * **Stress Rupture Life at 700°C (1300°F):** ≥ 100 hours at 170 MPa (25 ksi) * **Creep Resistance:** Good up to 700°C (1300°F) --- #### **International Standards** Alloy X-750 Rod conforms to several international specifications: **Aerospace Material Specifications:** * **AMS 5668:** Bars, forgings, and rings * **AMS 5670:** Springs and spring washers * **AMS 5671:** High-strength springs **ASTM Standards:** * **ASTM B637:** Precipitation-hardening nickel alloy bars, forgings, and forging stock * **ASTM B637:** Rods, bars, and forgings **Other International Standards:** * **ISO 9724:** Nickel and nickel alloy forgings * **DIN 17752:** Wrought nickel and nickel alloys * **GB/T 14992:** Chinese standard for superalloys --- #### **Product Applications** Alloy X-750 rod serves as fundamental material for critical components across industries: **Aerospace Industry:** * **Gas Turbine Components:** Turbine blades, disks, shafts, and fasteners * **Rocket Systems:** Turbopump components, thrust chamber elements * **Aircraft Structures:** Engine mounts, landing gear components, structural parts **Nuclear Industry:** * **Reactor Components:** Control rod mechanisms, core internals * **Nuclear Fuel Assemblies:** Spacer components, support structures * **Reactor Vessel Internals:** Bolting systems, spring components **Power Generation:** * **Gas Turbines:** Rotor components, blade rings, turbine disks * **Steam Turbines:** High-pressure sections, valve components * **Heat Exchangers:** Support rods, tube sheets, structural elements **Industrial Applications:** * **Fastener Manufacturing:** High-temperature bolts, studs, and special threaded components * **Spring Components:** High-temperature springs for valves and actuators * **Chemical Processing:** Reactor agitator shafts, valve components * **Test Equipment:** High-temperature test fixtures and components --- #### **Key Advantages** * **High Strength at Elevated Temperatures:** Maintains mechanical properties up to 700°C (1300°F) * **Excellent Creep Resistance:** Good stress rupture properties * **Good Oxidation Resistance:** Resists scaling and oxidation at high temperatures * **Corrosion Resistance:** Good resistance to various corrosive environments * **Good Machinability:** Better machining characteristics in annealed condition * **Age Hardenable:** Can be heat treated to various strength levels * **Reliable Performance:** Proven track record in critical applications * **Consistent Properties:** Uniform mechanical characteristics throughout rod diameter **Available Forms & Sizes:** * **Diameter Range:** 3mm to 300mm (0.125" to 12") * **Lengths:** Standard random lengths or cut-to-size * **Surface Finish:** Hot finished, turned, ground, or polished **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 * **Double Aging:** Optional second aging at 650°C (1200°F) for enhanced properties **Quality Assurance:** * **Ultrasonic Testing:** Detection of internal defects * **Chemical Analysis:** Complete composition verification * **Mechanical Testing:** Tensile, impact, and hardness testing * **Microstructural Examination:** Grain size and phase distribution analysis **Note:** *Inconel® is a registered trademark of Special Metals Corporation. Alloy X-750 rod is typically supplied in the solution annealed condition for optimum machinability, with subsequent aging treatment to develop high mechanical properties. The alloy demonstrates good weldability but requires proper post-weld heat treatment to restore properties in the heat-affected zone. Comprehensive material certification including chemical analysis and mechanical properties is 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 1820 gallon liquid totes Special package is available on request.