Alloy 801,Incoloy 801 Bar(Round bar, Flat bar),UNS N08801,E FORU

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

### **Product Introduction: Alloy 801 / INCOLOY® 801 Bar Products** **(Round Bar & Flat Bar) UNS N08801** #### **Overview** INCOLOY® 801 (UNS N08801) bar products are nickel-iron-chromium alloys specifically engineered for high-temperature applications requiring exceptional oxidation resistance and structural stability. Available in both **round bar** and **flat bar** forms, these austenitic alloys deliver superior performance in oxidizing, carburizing, and sulfidizing environments up to 1150°C (2100°F), making them 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 - **Good thermal stability** and structural integrity - **Excellent thermal fatigue resistance** - **Good machinability** and weldability characteristics --- ### **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) | --- ### **Mechanical Properties (Annealed Condition)** #### **Round Bar Mechanical 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% | | **Reduction of Area** | 50-65% | | **Hardness** | RB 75-95 | #### **Flat Bar Mechanical Properties** | Property | Value | |---------|-------| | **Tensile Strength** | 530-670 MPa (77-97 ksi) | | **Yield Strength (0.2% Offset)** | 230-335 MPa (33-49 ksi) | | **Elongation** | 28-42% | | **Hardness** | RB 70-90 | **Elevated Temperature Performance** - **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 under thermal cycling conditions --- ### **International Standards** | Standard | Round Bar | Flat Bar | |----------|-----------|----------| | **ASTM** | B166 | B168 | | **ASME** | SB166 | SB168 | | **UNS** | N08801 | N08801 | | **DIN** | 1.4875 | 1.4875 | --- ### **Product Specifications** #### **Round Bar Specifications** - **Diameter Range**: 5mm to 300mm (0.2" to 12") - **Length**: Standard 3-6 meters, cut-to-size available - **Tolerances**: h9, h11, or custom requirements - **Surface Finish**: Hot finished, turned, ground, or polished #### **Flat Bar Specifications** - **Thickness**: 5mm to 150mm (0.2" to 6") - **Width**: 20mm to 500mm (0.8" to 20") - **Length**: Standard 3-6 meters, custom lengths available - **Edge Condition**: As-rolled, machined, or radius edges #### **Available Conditions** - **Hot Worked**: As-forged or hot-rolled condition - **Annealed**: Optimal for machining and fabrication - **Solution Treated**: For maximum corrosion resistance - **Stress Relieved**: For dimensional stability --- ### **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 Bar Products:** - Solution annealing for optimum corrosion resistance - Stress relief after heavy machining operations - Controlled cooling to prevent carbide precipitation --- ### **Product Applications** #### **Round Bar Applications** - **Petrochemical**: Reformer furnace hangers and support rods - **Heat Treatment**: Radiant tube supports and hanger systems - **Power Generation**: Boiler tube supports and hanger rods - **Industrial**: High-temperature fasteners and structural pins #### **Flat Bar Applications** - **Structural Supports**: High-temperature brackets and frames - **Furnace Construction**: Retort supports and base plates - **Heat Treatment**: Basket components and fixture plates - **Industrial**: Machine bases and support structures #### **Petrochemical Industry** - **Ethylene Plants**: Cracking furnace supports and hangers - **Reformer Furnaces**: Catalyst tube supports - **Hydrogen Units**: Transfer line supports - **Heater Components**: Radiant section structural members #### **Heat Treatment Equipment** - **Furnace Rollers**: Continuous furnace conveyor systems - **Retort Systems**: Support frames and structural members - **Basket Assemblies**: Hanger systems and support structures - **Fixture Components**: High-temperature jigs and fixtures --- ### **Fabrication & Processing** #### **Machining Guidelines** - **Tool Material**: Carbide tools recommended - **Cutting Parameters**: Moderate speeds with positive rake angles - **Coolant Requirements**: Adequate cooling recommended - **Chip Control**: Proper chip breakers essential #### **Welding Characteristics** - **Preferred Methods**: GTAW (TIG), GMAW (MIG) - **Filler Metals**: INCOLOY 801 or INCONEL 82/182 - **Preheat**: Generally not required - **Post-Weld Heat Treatment**: Recommended for critical applications #### **Forming Operations** - **Hot Working**: 1150-1250°C (2100-2280°F) - **Cold Working**: Good formability in annealed condition - **Bending Requirements**: Moderate springback consideration --- ### **Quality Assurance & Testing** #### **Standard Testing Protocol** - **Chemical Analysis**: Spectroscopic verification - **Mechanical Testing**: Tensile, hardness, and impact tests - **Macro Examination**: Etchant testing for soundness - **Dimensional Verification**: Compliance with tolerances #### **Non-Destructive Testing** - **Ultrasonic Testing**: Internal quality assessment - **Dye Penetrant Inspection**: Surface defect detection - **Magnetic Particle Testing**: Surface and near-surface flaws #### **Certification & Documentation** - **Mill Test Certificates**: EN 10204 3.1/3.2 - **Material Traceability**: Full heat-to-part tracking - **Process Documentation**: Complete manufacturing records --- ### **Why Choose Our INCOLOY 801 Bar Products?** - **Manufacturing Expertise**: Advanced thermomechanical processing - **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 round bar and flat bar products.** --- *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 3004 gallon liquid totes Special package is available on request.