Alloy 450,Monel 450 Tube,,E FORU

British Specs:，American Specs:，German Specs:

### **Product Introduction: Alloy 400 / Monel 400 Tube** **Alloy 400** (commonly known under the trade name **Monel® 400**) is a nickel-copper alloy prized for its exceptional corrosion resistance, high strength, and excellent toughness. While Monel 400 pipe is generally used for fluid transport, **Monel 400 Tubes** are engineered for more precise applications, particularly in heat exchangers, condensers, and instrumentation systems. They offer superior performance in demanding environments where reliability under pressure and corrosion resistance are paramount. --- #### **Key Features & Advantages** * **Superior Corrosion Resistance:** Excellent resistance to seawater, sulfuric and hydrofluoric acids, alkalies, and salt solutions. * **High Thermal Conductivity:** Ideal for heat transfer applications in aggressive environments. * **Excellent Mechanical Properties:** Maintains high strength and ductility from cryogenic temperatures up to about 540°C (1000°F). * **Good Fabricability:** Can be readily bent, expanded, flared, and welded using standard techniques, making them ideal for complex tube assemblies. * **Resistance to Stress Corrosion Cracking:** Performs well in chloride-bearing environments where stainless steels may fail. --- #### **Chemical Composition (Typical % Weight, UNS N04400)** | Element | Nickel (Ni) | Copper (Cu) | Iron (Fe) | Manganese (Mn) | Carbon (C) | Silicon (Si) | Sulfur (S) | | :--- | :---: | :---: | :---: | :---: | :---: | :---: | :---: | | **Content** | **63.0 min** | **28.0 - 34.0** | 2.5 max | 2.0 max | 0.3 max | 0.5 max | 0.024 max | *Note: Monel is a registered trademark of Special Metals Corporation. Alloy 400 is the generic name for UNS N04400.* --- #### **Physical Properties** | Property | Metric Units | Imperial Units | | :--- | :--- | :--- | | **Density** | 8.80 g/cm³ | 0.318 lb/in³ | | **Melting Point** | 1350 °C | 2460 °F | | **Specific Heat** | 427 J/kg·K | 0.102 Btu/lb·°F | | **Thermal Conductivity** | 21.8 W/m·K | 151 Btu·in/hr·ft²·°F | | **Electrical Resistivity** | 51.0 μΩ·cm | 20.1 μΩ·in | | **Magnetic Response** | Essentially non-magnetic | Essentially non-magnetic | --- #### **Mechanical Properties (Typical for Annealed Tubes)** | Property | Metric Units | Imperial Units | | :--- | :--- | :--- | | **Tensile Strength** | 480 - 620 MPa | 70 - 90 ksi | | **Yield Strength (0.2% Offset)** | 170 - 345 MPa | 25 - 50 ksi | | **Elongation (in 50mm / 2in)** | 35 - 50 % | 35 - 50 % | | **Hardness (Rockwell B)** | 65 - 85 HRB | 65 - 85 HRB | --- #### **International Standards for Tube** Monel 400 tubes are manufactured to stringent international standards that govern dimensions, tolerances, and material quality for tubular products. | Standard Type | Standard Number | Title / Specification | | :--- | :--- | :--- | | **Material Standard** | **ASTM B163** | Standard Specification for Seamless Condenser and Heat-Exchanger Tubes of Nickel and Nickel Alloy (UNS N04400) | | **Material Standard** | **ASME SB163** | Equivalent to ASTM B163 for ASME Boiler and Pressure Vessel Code applications. | | **Material Standard** | **ASTM B165** | Also covers seamless pipe and tube, but B163 is the primary spec for heat exchanger tubes. | | **Dimensions** | **ASTM B751** | Standard for General Requirements for Nickel and Nickel Alloy Seamless and Welded Tube. | | **Dimensions** | **ASTM B829** | Standard for General Requirements for Nickel and Nickel Alloy Seamless and Welded Tube (alternative). | --- #### **Product Applications** Monel 400 tubes are critical components in systems requiring reliable performance in corrosive service: * **Heat Exchangers & Condensers:** * Shell and tube heat exchangers for chemical processing. * Surface condensers and feedwater heaters in power plants. * Marine condensers and heat exchangers handling seawater or brackish water. * **Oil, Gas & Petrochemical:** * Heat exchanger bundles in refineries and petrochemical plants. * Tubes for handling hydrofluoric acid (HF) in alkylation units. * Process coolers and heaters. * **Marine & Offshore:** * Evaporator and desalination plant tubes. * Coolers and condensers on ships and offshore platforms. * **Industrial Processing:** * Tubes for industrial heating and cooling circuits. * Instrumentation and sensing lines requiring corrosion resistance. --- #### **Available Forms & Specifications** Our Alloy 400 tubes are supplied to meet the precise dimensional and metallurgical requirements of heat exchanger and instrumentation design. * **Types:** Seamless Tube (the most common for pressure applications) & Welded Tube. * **Sizes:** A wide range of Outer Diameters (OD) and Wall Thicknesses (WT), conforming to BWG (Birmingham Wire Gauge) or precise metric dimensions. * **Condition:** Annealed (Soft) for optimal ductility and formability. * **Tolerances:** Supplied to meet the stringent OD, WT, and straightness tolerances of ASTM B163. **Conclusion** Alloy 400 / Monel 400 tube is the material of choice for critical heat transfer and instrumentation applications in corrosive environments. Its proven track record in industries from chemical processing to marine engineering ensures long service life and operational reliability, providing an excellent lifetime cost of ownership. **Contact us for technical data sheets, pricing, and to discuss your specific tube requirements.** --- ***Disclaimer:*** *The information provided is for reference purposes. Properties may vary based on manufacturing process, heat treatment, and size. Users should consult the relevant material standards and conduct their own tests to verify suitability for a specific application. "Monel" is a trademark of Special Metals Corporation group of companies.*

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 2954 gallon liquid totes Special package is available on request.