Alloy 800,Incoloy 800 Pipe,N08800,E FORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA15，American Specs:AMS 5766 Bar and Forgings AMS 5871 Sheet, Strip and Plate ASTM B408 ASTM B564 ASTM A240 ASTM A480，German Specs:WS 1.4876 WS 1.4958 WS 1.4959

### **Technical Datasheet: Alloy 800 / Incoloy® 800 Pipe (UNS N08800)** --- #### **1. Product Overview** **Alloy 800**, commercially known as **Incoloy® 800**, is a nickel-iron-chromium superalloy designed for excellent strength and corrosion resistance at high temperatures. The **pipe** form of **UNS N08800** is specifically engineered for high-temperature piping systems, heat exchangers, and process applications requiring reliable performance in demanding environments up to **1100°C (2012°F)**. --- #### **2. Chemical Composition** | Element | Content (%) | |---------|-------------| | Nickel (Ni) | 30.0–35.0 | | Chromium (Cr) | 19.0–23.0 | | Iron (Fe) | ≥ 39.5 | | Carbon (C) | ≤ 0.10 | | Manganese (Mn) | ≤ 1.50 | | Silicon (Si) | ≤ 1.00 | | Copper (Cu) | ≤ 0.75 | | Sulfur (S) | ≤ 0.015 | | Aluminum (Al) | 0.15–0.60 | | Titanium (Ti) | 0.15–0.60 | *Note: Aluminum + Titanium content maintained at 0.85–1.20%* --- #### **3. Physical Properties** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | Density | 7.94 g/cm³ | 0.286 lb/in³ | | Melting Point | 1350–1400°C | 2462–2552°F | | Specific Heat (20°C) | 500 J/kg·K | 0.12 Btu/lb·°F | | Thermal Conductivity (20°C) | 11.7 W/m·K | 81.2 Btu·in/hr·ft²·°F | | Mean Coefficient of Thermal Expansion (20–100°C) | 14.0 μm/m·°C | 7.8 × 10⁻⁶ in/in·°F | | Modulus of Elasticity | 200 GPa | 29.0 × 10⁶ psi | --- #### **4. Mechanical Properties** **Room Temperature Properties (Annealed Condition):** | Property | Typical Value | |----------|---------------| | Tensile Strength | 520–690 MPa (75–100 ksi) | | Yield Strength (0.2% Offset) | 210–345 MPa (30–50 ksi) | | Elongation | 30–50% | | Hardness (Rockwell B) | 75–95 HRB | **High Temperature Performance:** - Excellent creep rupture strength up to 700°C (1290°F) - Good stress rupture properties - Maintains mechanical integrity at elevated temperatures --- #### **5. International Standards** | Standard Body | Standard Number | Specification | |---------------|-----------------|---------------| | ASTM International | ASTM B163 | Seamless Condenser and Heat-Exchanger Tubes | | ASTM International | ASTM B165 | Nickel-Copper Alloy Seamless Pipe | | ASTM International | ASTM B167 | Nickel-Chromium-Iron Alloy Seamless Pipe | | ASME | SB-163, SB-167 | Pressure Vessel Components | | ASTM International | ASTM B829 | Seamless Nickel and Nickel Alloy Pipe | | EN | EN 10216-5 | Seamless Steel Tubes for Pressure Purposes | --- #### **6. Product Applications** **Chemical & Petrochemical Processing:** - Ethylene cracking furnace tubes - Steam methane reformer piping - Process gas transfer lines - High-temperature heat exchanger tubes - Catalyst carrier pipes **Power Generation:** - Heat recovery steam generator tubes - Superheater and reheater tubing - Nuclear steam generator tubes - Boiler pressure piping - Turbine bypass systems **Heat Treatment Industry:** - Radiant tube assemblies - Heat treatment atmosphere piping - Process gas conduits - Furnace cooling systems **Other Applications:** - Thermal processing equipment - Industrial heating systems - Exhaust and emissions systems - High-temperature utility piping --- #### **7. Key Features & Benefits** - **Excellent oxidation resistance** at high temperatures - **Good carburization resistance** - **High temperature strength** maintenance - **Good thermal stability** and fatigue resistance - **Excellent corrosion resistance** in various environments - **Good weldability** and fabricability --- #### **8. Corrosion Resistance** - Outstanding oxidation resistance up to 1100°C - Good resistance to carburizing atmospheres - Suitable for sulfur-containing environments - Resists chloride stress corrosion cracking - Good performance in steam and combustion gases --- #### **9. Fabrication & Installation** **Welding Characteristics:** - Excellent weldability using GTAW, GMAW, SMAW - Recommended filler metals: ENiCrFe-2/3 - Preheating generally not required - Post-weld heat treatment recommended for critical service **Pipe Fabrication:** - Good cold bending characteristics - Suitable for flanging and expanding - Can be formed using standard pipe fabrication methods **Installation Considerations:** - Follow standard piping practices - Consider thermal expansion in system design - Use appropriate gaskets and sealing materials --- #### **10. Available Specifications** **Pipe Sizes:** - NPS 1/8" to 24" - Schedule 5S to XXS - Various wall thicknesses available **Manufacturing Types:** - Seamless pipe - Welded and drawn pipe - Annealed and pickled condition **End Preparations:** - Plain ends - Beveled ends for welding - Threaded and coupled - Special end finishes available --- #### **11. Quality Assurance** - Certified to ASTM B163/B167 standards - Hydrostatic testing per applicable standards - Non-destructive examination available - Full material traceability - EN 10204 3.1/3.2 certification available --- **Disclaimer:** *Incoloy® is a registered trademark of Special Metals Corporation. This information is for reference purposes only. For specific applications, always consult appropriate material standards and manufacturer's technical data sheets. Performance in actual service conditions should be verified through testing.*

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 1887 gallon liquid totes Special package is available on request.