Alloy 800,Incoloy 800 Tube,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 Tube (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 **tube** form of **UNS N08800** is precision-manufactured for heat exchangers, furnace applications, and high-temperature processing systems, offering reliable performance in temperatures 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 and stress rupture strength - Maintains mechanical properties at elevated temperatures - Good thermal fatigue resistance --- #### **5. International Standards** | Standard Body | Standard Number | Specification | |---------------|-----------------|---------------| | ASTM International | ASTM B163 | Seamless Condenser and Heat-Exchanger Tubes | | ASTM International | ASTM B167 | Nickel-Chromium-Iron Alloy Seamless Pipe and Tube | | ASTM International | ASTM B829 | Seamless Nickel and Nickel Alloy Pipe and Tube | | ASME | SB-163, SB-167 | Pressure Vessel Components | | EN | EN 10216-5 | Seamless Steel Tubes for Pressure Purposes | | DIN | DIN 17459 | Seamless Tubes of Nickel-Based Alloys | --- #### **6. Product Applications** **Heat Exchanger Applications:** - Shell and tube heat exchangers - Condenser and evaporator tubes - Process gas coolers - Waste heat recovery units - Air preheater tubes **Furnace & Heat Treatment:** - Radiant tubes - Retort tubes - Muffle tubes - Heat treatment furnace tubes - Atmosphere generator tubes **Chemical Processing:** - Reactor tubes - Catalyst tubes - Process heater tubes - Transfer line exchangers - Pyrolysis tubes **Power Generation:** - Superheater tubes - Reheater tubes - Boiler tubes - Nuclear steam generator tubes - HRSG tubing --- #### **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** - **Superior heat transfer characteristics** --- #### **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** **Tube Fabrication:** - Good bending and forming characteristics - Suitable for tube expanding and rolling - Can be bent to tight radii in annealed condition - Maintains dimensional stability during fabrication **Welding & Joining:** - Excellent weldability using GTAW, GMAW - Recommended filler metals: ENiCrFe-2/3 - Tube-to-tubesheet welding capability - Post-weld heat treatment available **Quality Requirements:** - Eddy current testing - Hydrostatic testing - Dimensional verification - Surface quality inspection --- #### **10. Available Specifications** **Tube Dimensions:** - Outer Diameter: 6mm to 50mm (0.25" to 2") - Wall Thickness: 1mm to 5mm (0.035" to 0.188") - Length: Standard lengths or cut to size **Manufacturing Types:** - Seamless tubes - Welded and drawn tubes - Annealed and pickled condition - Bright annealed finish available **Special Features:** - U-bend tubes - Expanded ends - Special surface finishes - Custom sizes and configurations --- #### **11. Quality Assurance** - Certified to ASTM B163/B167 standards - Eddy current testing per ASTM E426 - Hydrostatic testing per applicable standards - Dimensional compliance verification - 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 1888 gallon liquid totes Special package is available on request.