Aperam Phyweld 400 Bar-Corrosion，1

### **Product Introduction: Aperam Phyweld® 400 Bar - Corrosion Resistant Nickel-Copper Alloy** **Overview** Aperam Phyweld® 400 Bar is a nickel-copper alloy offering excellent corrosion resistance in a wide range of aggressive environments. This solid-solution strengthened alloy demonstrates exceptional performance in seawater, hydrofluoric acid, sulfuric acid, and alkaline solutions. With its unique combination of mechanical properties and corrosion resistance, Phyweld 400 Bar is particularly suitable for marine applications, chemical processing, and hydrocarbon processing equipment where reliability in corrosive conditions is paramount. --- #### **Chemical Composition (Typical % by Weight)** | Element | Content (%) | Role & Benefit | |---------|-------------|---------------| | **Nickel (Ni)** | 63.0 min | Primary matrix element providing corrosion resistance | | **Copper (Cu)** | 28.0 - 34.0 | Enhances resistance to seawater and reducing acids | | **Iron (Fe)** | 2.5 max | Controlled residual element | | **Manganese (Mn)** | 2.0 max | Improves manufacturability and hot workability | | **Carbon (C)** | 0.3 max | Controlled for optimal mechanical properties | | **Silicon (Si)** | 0.5 max | Process control element | | **Sulfur (S)** | 0.024 max | Minimized to prevent hot cracking | *Note: Phyweld is a registered trademark of Aperam. This alloy corresponds to UNS N04400/W.Nr. 2.4360.* --- #### **Physical & Mechanical Properties** **Physical Properties:** - Density: 8.80 g/cm³ (0.318 lb/in³) - Melting Range: 1300-1350°C (2370-2460°F) - Thermal Expansion: 13.9 μm/m·°C @ 20-100°C - Thermal Conductivity: 21.8 W/m·K @ 100°C - Modulus of Elasticity: 179 GPa (26.0 x 10^6 psi) - Magnetic Permeability: Essentially non-magnetic **Mechanical Properties (Room Temperature):** - Tensile Strength: 480-620 MPa (70-90 ksi) - Yield Strength (0.2% Offset): 240-450 MPa (35-65 ksi) - Elongation: 35-45% - Hardness: HRB 65-85 --- #### **International Standards and Specifications** - **ASTM B164:** Nickel-Copper Alloy Bar, Rod, and Wire - **ASME SB-164:** Pressure vessel applications - **ASTM B165:** Seamless Pipe and Tube - **EN 2.4360:** European material designation - **AMS 4675:** Aerospace Material Specification - **NACE MR0175/ISO 15156:** Sour service compliance - **PED 2014/68/EU:** Pressure equipment directive --- #### **Product Applications** **Marine and Offshore Applications:** - Seawater pump shafts and impellers - Marine propeller shafts and fittings - Offshore platform components - Heat exchanger tubing and plates - Desalination plant equipment **Chemical Processing Industry:** - Hydrofluoric acid production equipment - Sulfuric acid handling systems - Alkaline process vessels - Chemical reaction equipment - Process piping and valves **Oil and Gas Industry:** - Downhole tool components - Wellhead equipment in sour service - Production tubing in corrosive wells - Valves and fittings for corrosive service **Power Generation:** - Feedwater heater tubing - Condenser components - Nuclear fuel processing equipment --- #### **Key Advantages** 1. **Excellent Corrosion Resistance**: Superior performance in seawater, acids, and alkalis 2. **Chloride Stress Corrosion Cracking Resistance**: Immune to chloride-induced stress corrosion 3. **Good Mechanical Properties**: Balanced combination of strength and ductility 4. **Excellent Fabricability**: Good welding and machining characteristics 5. **Non-Magnetic Properties**: Suitable for sensitive applications 6. **Cryogenic Capability**: Maintains toughness at low temperatures 7. **Proven Reliability**: Extensive service history in demanding environments --- **Conclusion** Aperam Phyweld® 400 Bar represents a reliable and versatile nickel-copper alloy solution for challenging corrosive environments. Its well-established chemical composition provides exceptional resistance to seawater, various acids, and alkaline solutions, making it particularly valuable in marine, chemical processing, and oil and gas applications. The alloy's excellent fabricability, combined with its proven track record in demanding service conditions, makes it a preferred choice for critical components where corrosion resistance and mechanical reliability are essential. Supported by comprehensive international standards and quality certifications, Phyweld 400 Bar continues to deliver consistent performance in some of the world's most aggressive operating environments.

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 3422 gallon liquid totes Special package is available on request.