Alloy 718，Inconel 718 Other/Similar Specs，UNS N07718，EFORU

British Specs:，American Specs: AMS 5662 Bar and Forgings AMS 5663 Bar and Forgings AMS 5664 Bar and Forgings AMS 5589 Seamless Tube AMS 5590 (Tube *) AMS 5596 Sheet, Strip and Plate AMS 5597 Sheet, Strip and Plate AMS 5832 Welding Wire AMS 5914 Sheet, Strip and Foil AMS 5950 (718SPF) Sheet & Strip ASTM F3055 Powder，German Specs:

### **Product Introduction: Alloy 718 / Inconel 718 - Other Product Forms & Specifications (UNS N07718)** #### **Overview** **Alloy 718** (commercially known as **Inconel® 718**) encompasses a diverse range of specialized product forms beyond the standard bar, sheet, and forgings. These "other" specifications include customized shapes, semi-finished products, and specialized configurations tailored for specific industrial applications. These variants maintain the alloy's fundamental characteristics - exceptional high-temperature strength, outstanding corrosion resistance, and excellent fabricability - while offering unique advantages for specialized applications in aerospace, energy, and chemical processing industries. The versatility of Alloy 718 allows for numerous specialized product forms, each engineered to meet specific performance requirements while maintaining the alloy's signature precipitation-hardening capability through gamma double prime (γ'') phase formation. --- #### **Chemical Composition** The chemical composition remains consistent across all special product forms: | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 50.0 - 55.0 | | **Chromium (Cr)** | 17.0 - 21.0 | | **Iron (Fe)** | Balance | | **Niobium (Nb)** | 4.75 - 5.50 | | **Molybdenum (Mo)** | 2.80 - 3.30 | | **Titanium (Ti)** | 0.65 - 1.15 | | **Aluminum (Al)** | 0.20 - 0.80 | | **Cobalt (Co)** | ≤ 1.00 | | **Carbon (C)** | ≤ 0.08 | | **Manganese (Mn)** | ≤ 0.35 | | **Silicon (Si)** | ≤ 0.35 | | **Sulfur (S)** | ≤ 0.015 | | **Copper (Cu)** | ≤ 0.30 | | **Boron (B)** | ≤ 0.006 | --- #### **Physical Properties** Consistent physical properties across all product forms: | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 8.19 g/cm³ | 0.296 lb/in³ | | **Melting Range** | 1260 - 1336 °C | 2300 - 2440 °F | | **Specific Heat (20°C)** | 435 J/kg·K | 0.104 Btu/lb·°F | | **Thermal Conductivity (20°C)** | 11.4 W/m·K | 79.1 Btu·in/hr·ft²·°F | | **Thermal Expansion Coefficient (20-100°C)** | 13.0 μm/m·°C | 7.2 μin/in·°F | | **Modulus of Elasticity** | 200 GPa | 29.0 x 10⁶ psi | --- #### **Specialized Product Forms & Applications** **1. Custom Extrusions** * **Forms:** Complex cross-sectional profiles, structural shapes * **Applications:** Airframe components, heat exchanger parts, structural supports * **Standards:** ASTM B864, Customer-specific specifications **2. Billets & Blooms** * **Forms:** Semi-finished products for further processing * **Applications:** Forging stock, remelting electrodes, machining blanks * **Standards:** ASTM B637, AMS 5662 **3. Precision Castings** * **Forms:** Investment cast components, lost-wax castings * **Applications:** Turbine blades, nozzle guides, complex housings * **Standards:** AMS 5383, ASTM A494 **4. Powder Metallurgy Products** * **Forms:** Metal powder for additive manufacturing, hot isostatic pressing * **Applications:** 3D printed components, HIP consolidated parts * **Standards:** ASTM F3055, AMS 4999 **5. Clad Products** * **Forms:** Explosion-bonded clad plates, roll-bonded clad sheets * **Applications:** Pressure vessels, chemical reactors, transition joints * **Standards:** ASTM B898, ASME SA264 **6. Special Fasteners** * **Forms:** Custom bolts, nuts, washers, special threaded components * **Applications:** High-temperature bolting, nuclear applications * **Standards:** ASTM F593, NAS, MIL specifications --- #### **International Standards** Comprehensive standards covering specialized product forms: **ASTM Standards:** * **ASTM B446:** Welded Nickel-Alloy Pipe and Tube * **ASTM B472:** Nickel Alloy Billets and Bars for Reforging * **ASTM B804:** UNS N07718 Welded Pipe for Corrosive Service **Aerospace Standards:** * **AMS 5383:** Investment Castings * **AMS 5599:** Welding Wire * **AMS 5665:** Forging Stock **International Standards:** * **ISO 9724:** Nickel Alloy Forgings * **DIN 17742:** Nickel Alloy Castings * **JIS H4551:** Nickel-Chromium Alloy Plates --- #### **Special Applications** **Additive Manufacturing:** * **Forms:** Powder for SLM, EBM, DED processes * **Applications:** Complex cooling channels, lightweight aerospace structures * **Advantages:** Design freedom, reduced material waste **Thermal Spray Powders:** * **Forms:** Spherical powder for coating applications * **Applications:** Wear-resistant coatings, corrosion protection * **Standards:** ASTM F3056 **Composite Materials:** * **Forms:** Metal matrix composites, reinforced structures * **Applications:** High-stiffness components, specialized wear parts --- #### **Key Advantages of Specialized Forms** * **Design Flexibility:** Custom shapes and configurations for specific applications * **Cost Efficiency:** Reduced machining and material waste * **Performance Optimization:** Tailored microstructures and properties * **Manufacturing Efficiency:** Near-net-shape production capabilities * **Quality Consistency:** Controlled processes ensuring reliability * **Technical Support:** Comprehensive engineering and processing guidance **Note:** *Inconel® is a registered trademark of Special Metals Corporation. These specialized product forms often require customized heat treatments, specific quality control protocols, and specialized processing expertise. Manufacturers typically provide detailed technical data sheets and processing recommendations for each specific product form and application requirement.*

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 1790 gallon liquid totes Special package is available on request.