Alloy 200，Nickel 200 Fittings，UNS N02200，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA12，American Specs:ASTM B162 ASTM B163 ASTM B725 ASTM B730，German Specs:WS 2.4060 WS 2.4066

### **Technical Datasheet: Nickel 200 Fittings (UNS N02200)** #### **1. Product Overview** **Nickel 200 Fittings** (commercially known as **Alloy 200 Fittings**) are precision-engineered piping components manufactured from commercially pure nickel (99.6% minimum). These fittings are designed to provide reliable connections and directional changes in piping systems handling corrosive media, while maintaining the excellent corrosion resistance and mechanical properties of Nickel 200. Available in various types including elbows, tees, reducers, caps, and couplings, Nickel 200 Fittings ensure system integrity in aggressive chemical environments from cryogenic temperatures up to approximately **315°C (600°F)**. The fittings are manufactured to maintain dimensional accuracy and surface quality suitable for critical piping systems. **High-Temperature Advisory:** For continuous service above 315°C (600°F), **Nickel 201 Fittings (UNS N02201)** are recommended due to their lower carbon content, which prevents embrittlement from grain-boundary carbide precipitation. #### **2. Chemical Composition (% Weight)** Composition conforms to ASTM B366 for wrought nickel alloy fittings. | Element | Content (%) (ASTM B366) | Content (%) (Typical) | | :--- | :--- | :--- | | **Nickel (Ni)** | 99.0 min | ≥ 99.6 | | **Carbon (C)** | 0.15 max | 0.08 | | **Manganese (Mn)** | 0.35 max | 0.20 | | **Iron (Fe)** | 0.40 max | 0.20 | | **Copper (Cu)** | 0.25 max | 0.15 | | **Silicon (Si)** | 0.35 max | 0.15 | | **Sulfur (S)** | 0.01 max | 0.005 | #### **3. Physical Properties** | Property | Metric Unit | Imperial Unit | | :--- | :--- | :--- | | **Density** | 8.89 g/cm³ | 0.321 lb/in³ | | **Melting Point** | 1435-1445 °C | 2615-2633 °F | | **Thermal Conductivity** (at 25°C) | 70 W/m·K | 485 BTU·in/hr·ft²·°F | | **Electrical Resistivity** | 0.095 µΩ·m | 36.5 µΩ·in | | **Modulus of Elasticity** | 186 GPa | 27 x 10⁶ psi | | **Thermal Expansion Coefficient** (20-100°C) | 13.3 µm/m·°C | 7.4 x 10⁻⁶ in/in·°F | | **Curie Temperature** | ~ 360 °C | ~ 680 °F | #### **4. Mechanical Properties (Typical for Annealed Condition)** | Property | Metric Unit | Imperial Unit | | :--- | :--- | :--- | | **Tensile Strength** | 460 - 620 MPa | 67 - 90 ksi | | **Yield Strength (0.2% Offset)** | 150 - 310 MPa | 22 - 45 ksi | | **Elongation (in 2 inches)** | 40 - 50% | 40 - 50% | | **Hardness (Rockwell B)** | 70 - 85 HRB | 70 - 85 HRB | #### **5. International Standards for Fittings** Nickel 200 Fittings conform to these international standards: | Standard Organization | Standard Number | Title / Scope | | :--- | :--- | :--- | | **ASTM International** | **ASTM B366** | Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings | | **ASME** | **SB-366** | Factory-Made Wrought Nickel and Nickel Alloy Fittings | | **ASME (Dimensional)** | **ASME B16.9** | Wrought Buttwelding Fittings | | **ASME (Dimensional)** | **ASME B16.11** | Forged Fittings, Socket-Welding and Threaded | | **ASME (Dimensional)** | **ASME B16.28** | Wrought Steel Buttwelding Short Radius Elbows and Returns | | **MSS** | **MSS SP-43** | Wrought Stainless Steel Buttwelding Fittings | | **UNS** | **N02200** | Unified Numbering System | #### **6. Key Characteristics & Advantages** * **Excellent Corrosion Resistance:** Superior performance in caustic alkalis, reducing acids, and various chemical environments. Resists chloride-induced stress corrosion cracking. * **Precision Manufacturing:** Manufactured to strict dimensional standards ensuring proper fit-up and alignment in piping systems. * **Good Weldability:** Can be readily welded to Nickel 200 pipe and tubing using GTAW (TIG) and GMAW (MIG) processes with matching filler metals (ERNi-1). * **Surface Quality:** Smooth internal surfaces minimize pressure drop and prevent accumulation of corrosive media. * **Dimensional Stability:** Maintains shape and dimensions under thermal cycling and mechanical stress. * **Versatile Configurations:** Available in buttweld, socket weld, and threaded configurations to meet various system requirements. #### **7. Types of Fittings Available** * **Buttweld Fittings:** - Elbows (45°, 90°, 180°) - Tees (Equal and Reducing) - Reducers (Concentric and Eccentric) - Caps and Stub Ends * **Socket Weld Fittings:** - Unions - Elbows - Tees - Couplings * **Threaded Fittings:** - Nipples - Couplings - Elbows - Tees #### **8. Product Applications** Nickel 200 Fittings are used in critical piping systems across multiple industries: * **Chemical Processing:** - Caustic soda and potassium hydroxide systems - Halogen acid handling systems - Chemical reactor feed and discharge lines - Evaporator and crystallizer piping * **Pharmaceutical Industry:** - High-purity process systems - Clean utility distribution - API manufacturing processes * **Food Processing:** - Fatty acid processing equipment - Food grade chemical handling - Sanitary processing systems * **Alkaline Service:** - Electrolytic cell connections - Caustic evaporator piping - Mercaptan oxidation units * **Other Applications:** - Heat exchanger connections - Instrumentation tubing systems - Semiconductor manufacturing - Research and laboratory systems --- **Disclaimer:** The information provided is for technical reference. Actual properties may vary based on manufacturing process, size, and heat treatment. For critical applications, consult the complete material specifications, applicable design codes, and qualified engineering resources. Proper installation and welding procedures must be followed to ensure system integrity.

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 1632 gallon liquid totes Special package is available on request.