Alloy 801,Incoloy 801 Plate,UNS N08801,E FORU

British Specs:，American Specs: AMS 5552 Sheet, Strip and Plate，German Specs:

### **Product Introduction: Alloy 801 / INCOLOY® 801 Plate (UNS N08801)** #### **Overview** INCOLOY® 801 (UNS N08801) plate is a nickel-iron-chromium alloy specifically engineered for high-temperature structural applications requiring exceptional resistance to oxidation, carburization, and thermal cycling. This austenitic alloy maintains excellent mechanical properties and structural integrity at temperatures up to 1150°C (2100°F), making it ideal for critical components in petrochemical processing, heat treatment equipment, and power generation industries. --- ### **Key Features & Advantages** - **Excellent oxidation resistance** up to 1150°C (2100°F) - **Superior resistance to carburization** and sulfidation - **High strength retention** at elevated temperatures - **Excellent thermal fatigue resistance** under cycling conditions - **Good weldability** and fabrication characteristics - **Outstanding structural stability** in prolonged high-temperature service --- ### **Chemical Composition (Typical % Weight)** | Element | Content (%) | Role in Alloy | |---------|-------------|---------------| | **Nickel (Ni)** | 30.0-35.0 | Provides austenitic structure and high-temperature strength | | **Chromium (Cr)** | 19.0-23.0 | Enhances oxidation and corrosion resistance | | **Iron (Fe)** | Balance | Matrix element providing structural integrity | | **Carbon (C)** | 0.05-0.10 | Improves strength at elevated temperatures | | **Titanium (Ti)** | 0.15-0.60 | Stabilization against sensitization | | **Aluminum (Al)** | 0.15-0.60 | Enhances oxidation resistance | | **Manganese (Mn)** | 1.50 max | - | | **Silicon (Si)** | 1.00 max | Improves high-temperature oxidation resistance | | **Copper (Cu)** | 0.75 max | - | | **Sulfur (S)** | 0.015 max | - | --- ### **Physical Properties** | Property | Value | |---------|-------| | **Density** | 7.95 g/cm³ (0.287 lb/in³) | | **Melting Point** | 1380-1425°C (2515-2600°F) | | **Thermal Conductivity** | 12.5 W/m·K at 20°C | | **Thermal Expansion** | 14.4 μm/m·K at 20-100°C | | **Specific Heat** | 460 J/kg·K at 20°C | | **Modulus of Elasticity** | 200 GPa (29 x 10^6 psi) | | **Electrical Resistivity** | 1.02 μΩ·m at 20°C | --- ### **Mechanical Properties (Plate - Annealed Condition)** #### **Room Temperature Properties** | Property | Value | |---------|-------| | **Tensile Strength** | 550-690 MPa (80-100 ksi) | | **Yield Strength (0.2% Offset)** | 240-345 MPa (35-50 ksi) | | **Elongation** | 30-45% | | **Hardness** | RB 75-95 | #### **Elevated Temperature Properties** - **Stress Rupture Strength**: 55 MPa (8 ksi) at 815°C (1500°F) for 100 hours - **Creep Strength**: Excellent long-term performance at high temperatures - **Thermal Fatigue Resistance**: Superior performance under thermal cycling - **Structural Stability**: Maintains dimensional integrity at high temperatures --- ### **International Standards** | Standard | Specification | Application | |----------|---------------|-------------| | **ASTM** | B168 | Plate, Sheet, and Strip | | **ASME** | SB168 | Boiler and Pressure Vessel Code | | **UNS** | N08801 | Unified Numbering System | | **DIN** | 1.4875 | German Standard | | **EN** | NiCr32AlTi | European Standard | --- ### **Product Specifications** #### **Plate Dimensions & Tolerances** - **Thickness Range**: 5mm to 150mm (0.187" to 6") - **Width Range**: 1000mm to 2000mm (39" to 78") - **Length Range**: 2000mm to 6000mm (78" to 236") - **Thickness Tolerance**: ±5% of nominal thickness #### **Available Conditions** - **Hot Rolled**: As-rolled condition - **Annealed**: Optimal for fabrication and forming - **Solution Treated**: For maximum corrosion resistance - **Stress Relieved**: For dimensional stability #### **Surface Finish Options** - **Hot Rolled, Annealed & Pickled**: Standard finish - **Cold Rolled**: Smooth finish for specific applications - **Machined**: Precision surface for critical applications - **Grit Blasted**: Uniform matte finish --- ### **Heat Treatment** **Standard Heat Treatment Cycle:** - **Annealing Temperature**: 980-1065°C (1800-1950°F) - **Cooling Method**: Rapid cooling (water quenching) - **Soaking Time**: 30 minutes per inch of thickness **Special Considerations for Plate:** - Controlled atmosphere recommended for surface protection - Uniform heating and cooling rates essential for flatness - Stress relief after heavy machining operations - Solution annealing after welding or severe forming --- ### **Product Applications** #### **Petrochemical Industry** - **Reformer Furnaces**: Outlet headers and transition pieces - **Ethylene Crackers**: Transfer line supports and headers - **Heater Components**: Radiant tube sheets and supports - **Reactor Systems**: Support plates and headers #### **Heat Treatment Equipment** - **Furnace Components**: Retorts, muffles, and radiant chambers - **Retort Systems**: Bottom plates and support structures - **Basket Assemblies**: Base plates and support frames - **Fixture Components**: High-temperature jigs and fixtures #### **Power Generation** - **Heat Recovery Systems**: Duct plates and structural supports - **Boiler Components**: Support plates and baffles - **Turbine Systems**: Casing supports and mounting plates - **Exhaust Systems**: Ducting plates and structural members #### **Industrial Applications** - **Glass Manufacturing**: Furnace components and support plates - **Steel Processing**: Annealing furnace bases and covers - **Chemical Processing**: Reactor support plates and liners - **Incineration Systems**: Heat exchanger support plates --- ### **Fabrication & Processing** #### **Machining Guidelines** - **Tool Material**: Carbide tools recommended for production work - **Cutting Parameters**: Moderate speeds with positive rake angles - **Coolant Requirements**: Adequate cooling to control work hardening - **Chip Control**: Proper chip breakers essential for efficient machining #### **Welding Characteristics** - **Preferred Method**: GTAW (TIG) for optimum quality - **Filler Metals**: INCOLOY 801 or INCONEL 82/182 - **Preheat**: Generally not required - **Post-Weld Heat Treatment**: Recommended for critical applications #### **Forming Operations** - **Cold Forming**: Good formability in annealed condition - **Hot Forming**: 1150-1250°C (2100-2280°F) recommended - **Bending Requirements**: Minimum bend radius 3T for annealed condition - **Press Forming**: Suitable for complex shapes in annealed condition --- ### **Quality Assurance & Testing** #### **Standard Testing Protocol** - **Chemical Analysis**: Spectroscopic verification of composition - **Mechanical Testing**: Tensile, hardness, and impact tests - **Macro Examination**: Etchant testing for soundness - **Dimensional Verification**: Compliance with specified tolerances #### **Non-Destructive Testing** - **Ultrasonic Testing**: Internal quality assessment - **Dye Penetrant Inspection**: Surface defect detection - **Radiographic Testing**: For critical applications - **Visual Inspection**: Surface quality evaluation #### **Certification & Documentation** - **Mill Test Certificates**: EN 10204 3.1/3.2 - **Material Traceability**: Full heat-to-part tracking - **Process Documentation**: Complete manufacturing records - **Compliance Certificates**: International standard certification --- ### **Performance Characteristics** #### **Oxidation Resistance** - **Continuous Service**: Up to 1150°C (2100°F) - **Cyclic Oxidation**: Excellent resistance to spalling - **Scaling Resistance**: Minimal weight gain at high temperatures - **Surface Stability**: Forms protective, adherent chromium oxide scale #### **Corrosion Resistance** - **Carburization Resistance**: Excellent in hydrocarbon environments - **Sulfidation Resistance**: Good in sulfur-containing atmospheres - **Nitriding Resistance**: Moderate in nitrogen atmospheres - **Chloride Attack**: Limited resistance to chloride stress corrosion --- ### **Why Choose Our INCOLOY 801 Plate?** - **Manufacturing Expertise**: Advanced plate production technology - **Quality Assurance**: Comprehensive testing and certification - **Technical Support**: Application engineering expertise - **Global Standards Compliance**: Certified to international specifications - **Proven Performance**: Established track record in critical applications - **Custom Solutions**: Tailored dimensions and processing options **Contact us today for technical specifications and quotation for INCOLOY 801 plate products. Our engineering team provides comprehensive support from material selection through fabrication and installation.** --- *Disclaimer: INCOLOY® is a registered trademark of Special Metals Corporation. The information provided is for technical reference only. Final material selection should be verified through appropriate testing and engineering analysis for specific 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 3007 gallon liquid totes Special package is available on request.