Alloy 600，Inconel 600 Fittings，UNS N06600，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA14，American Specs:AMS 5580 (Tube *) AMS 5540 Sheet, Strip and Plate AMS 5665 Bar and Forgings AMS 5687 Wire QQ-W-390，German Specs:WS 2.4816,AFNOR NC15Fe

### **Alloy 600 / Inconel 600 Fittings / UNS N06600 – Nickel-Chromium-Iron Alloy Fittings** **Product Overview** Inconel 600 Fittings (UNS N06600) are precision-engineered pipe and tube connectors manufactured from nickel-chromium-iron alloy, designed for high-temperature and corrosive service applications. These fittings maintain excellent mechanical properties from cryogenic temperatures up to 2000°F (1093°C) and offer superior resistance to oxidation, chloride stress corrosion cracking, and carburization. They are essential components in piping systems requiring reliable performance in aggressive chemical environments, heat treatment facilities, and nuclear applications. --- **Chemical Composition (ASTM B366 / ASTM B564)** | Element | Content (%) | |----------------|----------------| | **Nickel (Ni)** | 72.0 min | | **Chromium (Cr)**| 14.0–17.0 | | **Iron (Fe)** | 6.0–10.0 | | **Manganese (Mn)**| 1.0 max | | **Copper (Cu)** | 0.5 max | | **Carbon (C)** | 0.15 max | | **Silicon (Si)** | 0.5 max | | **Sulfur (S)** | 0.015 max | *The balanced composition provides exceptional resistance to both oxidizing and reducing environments while maintaining structural integrity at elevated temperatures.* --- **Physical Properties** | Property | Value | |-------------------------------|---------------------------------| | **Density** | 8.47 g/cm³ (0.306 lb/in³) | | **Melting Range** | 1354–1413°C (2470–2575°F) | | **Electrical Resistivity** | 103 μΩ·cm (at 21°C) | | **Thermal Conductivity** | 14.9 W/m·K (at 100°C) | | **Mean Coefficient of Thermal Expansion** | 13.3 μm/m·°C (20–100°C) | | **Modulus of Elasticity** | 214 GPa (31,000 ksi) | | **Magnetic Permeability** | <1.01 (Essentially non-magnetic)| --- **Mechanical Properties (Fittings – Annealed Condition)** | Property | Room Temperature | 1000°F (538°C) | 1200°F (649°C) | |-----------------------------|------------------|----------------|----------------| | **Tensile Strength** | 620 MPa (90 ksi) | 520 MPa (75 ksi)| 450 MPa (65 ksi)| | **Yield Strength (0.2% Offset)** | 240 MPa (35 ksi) | 195 MPa (28 ksi)| 170 MPa (25 ksi)| | **Elongation in 2"** | 40% | 35% | 30% | | **Hardness** | 70 HRB | 65 HRB | 60 HRB | | **Impact Strength (Charpy V-Notch)** | 80 J | 65 J | 45 J | --- **Fitting Types & Specifications** **Butt-Weld Fittings (ASME B16.9)** - **Elbows**: 45°, 90°, 180° - **Tees**: Equal and reducing - **Reducers**: Concentric and eccentric - **Caps**: All pressure ratings - **Stub Ends**: Lap joint style **Socket-Weld Fittings (ASME B16.11)** - **Elbows**: 45°, 90° - **Tees**: Straight and reducing - **Unions**: Standard and compact - **Couplings**: Half and full - **Plugs**: Square head and round head **Threaded Fittings** - **Nipples**: Close, shoulder, long - **Elbows**: 45°, 90° - **Tees**: Equal and reducing - **Couplings**: Full and half - **Bushings**: Hex and reducing **Flanges (ASME B16.5)** - **Slip-On**: Class 150 to 2500 - **Weld Neck**: Class 150 to 2500 - **Blind**: Class 150 to 2500 - **Socket Weld**: Class 150 to 2500 - **Lap Joint**: Class 150 to 1500 --- **Key Characteristics & Advantages** 1. **Excellent High-Temperature Strength** – Maintains mechanical properties up to 2000°F (1093°C) 2. **Superior Corrosion Resistance** – Outstanding performance in both oxidizing and reducing environments 3. **Chloride Stress Corrosion Cracking Resistance** – Superior to stainless steels in chloride-containing environments 4. **Oxidation and Carburization Resistance** – Excellent performance in high-temperature atmospheres 5. **Good Weldability** – Can be welded using standard procedures with matching filler metals 6. **Non-Magnetic Properties** – Suitable for electronic and sensitive applications 7. **Cryogenic Toughness** – Maintains ductility and impact strength at sub-zero temperatures --- **Product Applications** **Chemical Processing Industry** - Acid and chemical transfer systems - Reactor feed and discharge lines - Process instrumentation connections - Corrosive fluid handling systems - Chemical injection systems **Heat Treatment Industry** - Furnace atmosphere systems - Retort and muffle connections - Heat treatment gas supply lines - Thermal processing exhaust systems - High-temperature fluid transfer systems **Nuclear Industry** - Reactor coolant systems - Steam generator connections - Nuclear waste processing systems - Radiation monitoring systems - Decontamination system piping **Power Generation** - Boiler feedwater systems - Superheater and reheater connections - Condenser and heat exchanger systems - Steam sampling systems - Cooling water systems **Aerospace & Defense** - Hydraulic system components - Fuel system connections - Engine bleed air systems - Environmental control systems - Instrumentation and sensing lines --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N06600** | Unified Numbering System | | **ASTM** | B366 | Factory-Made Wrought Nickel Alloy Fittings | | **ASTM** | B564 | Nickel Alloy Forgings | | **ASME** | SB366 | Boiler and Pressure Vessel Code | | **ASME** | SB564 | Boiler and Pressure Vessel Code | | **MSS** | SP-97 | Integrally Reinforced Forged Branch Outlet Fittings | | **DIN** | 2.4816 | German Standard | | **EN** | NiCr15Fe | European Standard | --- **Manufacturing Processes** **Forging Methods** - **Open-Die Forging**: Large or custom fittings - **Closed-Die Forging**: High-volume production - **Ring Rolling**: Large diameter fittings - **Press Forging**: Complex shapes **Heat Treatment** - **Solution Annealing**: 1600–1950°F (870–1065°C) - **Quenching**: Water or rapid air cool - **Stress Relieving**: 1100–1400°F (595–760°C) - **Final Heat Treatment**: Per ASTM B366 requirements **Quality Control** - **Chemical Analysis**: Verify composition - **Mechanical Testing**: Tensile and hardness - **Dimensional Inspection**: Per applicable standards - **Non-Destructive Examination**: As specified --- **Pressure-Temperature Ratings** **ASME B16.9/B16.11 Ratings** | Pressure Class | 100°F (38°C) | 500°F (260°C) | 800°F (427°C) | 1000°F (538°C) | |----------------|--------------|---------------|---------------|----------------| | **Class 150** | 275 psi | 230 psi | 180 psi | 150 psi | | **Class 300** | 720 psi | 600 psi | 470 psi | 390 psi | | **Class 600** | 1440 psi | 1200 psi | 940 psi | 780 psi | | **Class 900** | 2160 psi | 1800 psi | 1410 psi | 1170 psi | --- **Installation & Maintenance** **Welding Procedures** - **Welding Methods**: GTAW, GMAW, SMAW - **Filler Metals**: ENiCrFe-2, ENiCrFe-3 - **Preheating**: Not required - **Post-Weld Heat Treatment**: Generally not necessary - **Shielding Gas**: Argon or argon-helium mixtures **Installation Guidelines** - **Alignment**: Proper alignment before welding - **Support**: Adequate piping support - **Gaskets**: Compatible materials - **Bolting**: Matching or compatible alloy fasteners - **Testing**: Hydrostatic or pneumatic testing **Maintenance Considerations** - **Inspection**: Regular visual examination - **Cleaning**: Compatible cleaning solutions - **Replacement**: Proper procedures for removal - **Documentation**: Maintain installation records --- **Quality Assurance & Testing** **Standard Testing** - Chemical analysis verification - Tensile testing at room temperature - Hardness testing - Hydrostatic testing - Dimensional verification **Non-Destructive Testing** - Liquid penetrant examination - Magnetic particle testing - Ultrasonic examination - Radiographic examination (for critical applications) **Certification Requirements** - Mill Test Certificates per EN 10204 3.1 - Chemical analysis certificates - Mechanical test reports - Heat treatment records - NDE reports as specified - Material traceability documentation --- **Corrosion Resistance Performance** **Excellent Resistance To** - Fresh and sea water corrosion - Chloride stress corrosion cracking - Oxidation up to 2000°F (1093°C) - Carburizing atmospheres - Neutral and alkaline salt solutions **Good Resistance To** - Nitric acid at all concentrations - Phosphoric acid solutions - Organic acids and compounds - Caustic alkaline solutions - High-temperature sulfur environments --- **Packaging & Handling** **Standard Packaging** - Individual plastic protection - Wooden crates or boxes - Weather-proof wrapping - Clear identification labeling **Marking Requirements** - Material grade (INCONEL 600) - Heat number - Size and schedule - Pressure rating - Manufacturer's identification **Storage & Handling** - Store in clean, dry conditions - Protect from mechanical damage - Keep original packaging until installation - Maintain proper segregation from other materials --- **Conclusion** Inconel 600 Fittings (UNS N06600) provide an exceptional combination of high-temperature strength, outstanding corrosion resistance, and reliable performance in pressure systems. Their superior resistance to chloride stress corrosion cracking, oxidation, and carburization makes them ideal for chemical processing, heat treatment, nuclear, and power generation industries. Available in various types, sizes, and pressure ratings with comprehensive international certification, Inconel 600 fittings offer engineers and designers a trusted solution for demanding piping applications where reliability, safety, and longevity are essential requirements.

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 1723 gallon liquid totes Special package is available on request.