Alloy 330，Incoloy 330 Fittings，,E FORU

British Specs:，American Specs: AMS 5716 Sheet and Strip，German Specs:

### **Product Introduction: Alloy 330 / Incoloy 330 Fittings (UNS N08330)** **Alloy 330 Fittings** are precision-engineered connection components manufactured from nickel-iron-chromium superalloy, designed to provide reliable performance in high-temperature piping and tubing systems. These fittings maintain exceptional resistance to oxidation, carburization, and thermal cycling while ensuring leak-proof connections in demanding industrial applications up to 2200°F (1200°C). Available in various configurations including elbows, tees, reducers, couplings, and flanges, Alloy 330 fittings guarantee system integrity and longevity in aggressive thermal environments where standard stainless steel components would rapidly deteriorate. --- ### **Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | | :--- | :--- | :--- | | **Nickel (Ni)** | 34.0 - 37.0 | Provides oxidation/carburization resistance; stabilizes austenitic structure | | **Chromium (Cr)** | 17.0 - 20.0 | Forms protective chromium oxide scale for high-temperature protection | | **Iron (Fe)** | Balance | Base structural element | | **Silicon (Si)** | 0.75 - 1.50 | Enhances carburization resistance and scale adhesion | | **Manganese (Mn)** | ≤ 2.00 | Improves hot workability and manufacturability | | **Carbon (C)** | ≤ 0.08 | Provides elevated temperature strength | | **Phosphorus (P)** | ≤ 0.030 | Controlled impurity | | **Sulfur (S)** | ≤ 0.030 | Controlled impurity | --- ### **Physical & Mechanical Properties** | Property | Value | | :--- | :--- | | **Density** | 8.0 g/cm³ (0.289 lb/in³) | | **Melting Point** | 1371 - 1427 °C (2500 - 2600 °F) | | **Thermal Expansion Coefficient** | 14.4 μm/m·°C (20-300°C) | | **Thermal Conductivity** | 12.5 W/m·K (at 100°C) | | **Modulus of Elasticity** | 196 GPa (28.4 × 10⁶ psi) | | **Tensile Strength** | 620 MPa (90 ksi) min | | **Yield Strength (0.2% Offset)** | 310 MPa (45 ksi) min | | **Elongation** | 30% min | | **Hardness** | ≤ 85 HRB | --- ### **International Standards & Specifications** Alloy 330 fittings comply with major international standards ensuring quality and interoperability. | Standard Type | Standard Number | Specification | | :--- | :--- | :--- | | **Butt-Weld Fittings** | ASTM B366 / ASME SB-366 | Factory-Made Wrought Nickel Alloy Fittings | | **Forged Fittings** | ASTM B462 / ASME SB-462 | Forged or Rolled Alloy Pipe Flanges, Fittings | | **Socket-Weld & Threaded** | ASME B16.11 | Forged Steel Fittings, Socket-Welding and Threaded | | **Plate Standards** | ASTM B536 | Base Material Specification | | **UNS** | **N08330** | Unified Numbering System | **Available Fitting Types:** - **Butt-Weld:** Elbows (45°, 90°, 180°), Tees, Reducers, Caps - **Socket-Weld:** Couplings, Unions, Elbows, Tees - **Threaded:** NPT, BSPT connections - **Flanges:** Slip-on, Weld Neck, Blind, Lap Joint - **Special Fittings:** Crosses, Stub Ends, Nipples --- ### **Product Applications** Alloy 330 fittings serve critical roles in high-temperature processing systems across multiple industries: 1. **Thermal Processing Systems** - **Furnace Piping Networks:** Connecting radiant tubes, charge systems - **Heat Treatment Lines:** Atmosphere gas supply and exhaust systems - **Quench System Piping:** Handling hot oil and molten salt transfers 2. **Petrochemical & Refining** - **Transfer Line Systems:** Ethylene cracking furnace connections - **Reformer Piping:** Hydrogen plant high-temperature lines - **Furnace Headers:** Distributing process fluids in fired heaters 3. **Power Generation** - **Waste Heat Recovery Systems:** Connecting boiler sections - **Exhaust Ducting:** High-temperature gas handling systems - **Superheater Piping:** Steam system connections 4. **Industrial Heating Equipment** - **Burner Manifolds:** Fuel gas and combustion air distribution - **Recuperator Systems:** Heat exchanger connections - **Atmosphere Generator Piping:** Process gas supply lines --- ### **Manufacturing & Quality Assurance** **Manufacturing Processes:** - **Hot Forming:** For larger diameter fittings and flanges - **Cold Forming:** Precision bends for smaller fittings - **Machining:** CNC machining from forged blanks - **Heat Treatment:** Solution annealing for optimal properties - **Surface Treatment:** Pickling and passivation **Quality Control:** - **Dimensional Verification:** 100% inspection to applicable standards - **Material Certification:** ASTM B536 compliance with mill certificates - **Non-Destructive Testing:** PT, RT, UT as required by specification - **Pressure Testing:** Hydrostatic or pneumatic testing available - **Traceability:** Full material traceability from melt to finished fitting --- ### **Installation & Maintenance** **Welding Requirements:** - **Preferred Process:** GTAW (TIG) for root passes - **Filler Metal:** ERNiCr-3 (Alloy 82) or ERNiCrSi-1 - **Preheat/Interpass:** Generally not required - **Post-Weld Heat Treatment:** Typically not necessary **System Design Considerations:** - **Thermal Expansion:** Accommodate higher expansion rates than carbon steel - **Support spacing:** Closer than standard carbon steel systems - **Gasket Selection:** High-temperature spiral wound or graphite types - **Bolting:** Matching high-temperature alloy bolts recommended --- ### **Comparative Advantages** | Feature | Benefit | | :--- | :--- | | **Oxidation Resistance** | Extended service life in continuous high-temperature operation | | **Carburization Resistance** | Maintains ductility and strength in carbon-rich atmospheres | | **Thermal Fatigue Resistance** | Withstands repeated thermal cycling without cracking | | **Scale Resistance** | Minimal flaking ensures clean operation and flow characteristics | | **Crevice Corrosion Resistance** | Maintains integrity in stagnant or low-flow conditions | --- ### **Alternative Materials** | Alloy | Temperature Limit | Key Differentiators from Alloy 330 | | :--- | :--- | :--- | | **304/310 Stainless** | 1500-1800°F | Lower high-temperature strength and carburization resistance | | **Alloy 800H** | 2100°F | Better creep strength but lower carburization resistance | | **Alloy 600** | 2000°F | Lower strength in carburizing environments | | **RA 330®** | 2200°F | Similar performance, trademarked version | ### **Conclusion** **Alloy 330 / Incoloy 330 Fittings** provide engineered solutions for connecting high-temperature piping systems where reliability and longevity are paramount. Their exceptional resistance to oxidation, carburization, and thermal cycling ensures system integrity in the most demanding industrial environments, from heat treating furnaces to petrochemical processing units. The comprehensive standardization, quality assurance, and manufacturing precision behind these fittings give engineers and operators confidence in their performance, making them the preferred choice for critical high-temperature applications across global industrial sectors.

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 2711 gallon liquid totes Special package is available on request.