Alloy 404,Monel 404 Forgings,,E FORU

British Specs:，American Specs:，German Specs:

### **Product Introduction: Alloy 404 / Monel 404 Forgings** **High-Performance Nickel Alloy Forgings for Specialized Electrical and Electronic Applications** Alloy 404 (commercially known as **Monel 404**) is a unique, ductile nickel-copper alloy specifically engineered for its exceptional electrical and magnetic properties. Our Monel 404 forgings are manufactured to the highest standards, providing superior structural integrity, reliability, and performance in demanding environments, particularly where low magnetic permeability and high thermal conductivity are critical. These forgings undergo a controlled thermo-mechanical process that refines the grain structure, enhancing the alloy's inherent strength, toughness, and resistance to fatigue. This makes them the ideal choice for components in the electronics, aerospace, and specialized industrial sectors. --- #### **Key Characteristics & Advantages** * **Exceptionally Low Magnetic Permeability:** Remains essentially non-magnetic from cryogenic temperatures up to its Curie point, making it ideal for magnetic field-sensitive applications. * **Controlled Thermal Expansion:** Exhibits a specific and consistent thermal expansion coefficient, crucial for components requiring dimensional stability under thermal cycling. * **Excellent Electrical Conductivity:** Offers good electrical performance, superior to many other nickel alloys. * **High Ductility and Formability:** Allows for the forging of complex shapes and intricate components without cracking. * **Good Corrosion Resistance:** Resists corrosion in various atmospheres, fresh water, and seawater, as well as in alkaline and salt solutions. * **Superior Weldability:** Can be readily welded using common techniques, facilitating the fabrication of complex assemblies. --- #### **Chemical Composition (Weight % Typical)** The composition is precisely controlled to ensure the desired physical and magnetic properties. | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 52.0 - 57.0 | | **Copper (Cu)** | Balance | | **Manganese (Mn)** | 0.10 max | | **Iron (Fe)** | 0.50 max | | **Silicon (Si)** | 0.10 max | | **Carbon (C)** | 0.15 max | | **Sulfur (S)** | 0.024 max | | **Aluminum (Al)** | 0.05 max | | **Titanium (Ti)** | 0.05 max | *Note: The low iron content is critical for achieving the alloy's low magnetic permeability.* --- #### **Typical Physical & Mechanical Properties** *Properties are typical for annealed forgings and may vary based on specific forging practice and heat treatment.* **Physical Properties** * **Density:** 8.91 g/cm³ (0.322 lb/in³) * **Melting Range:** 1290 - 1350 °C (2350 - 2460 °F) * **Curie Temperature:** ~ -135 °C (-211 °F) *[The temperature below which it becomes ferromagnetic]* * **Electrical Resistivity:** 51.0 μΩ·cm at 20 °C * **Thermal Conductivity:** 22.0 W/m·K at 20 °C * **Mean Coefficient of Thermal Expansion (20-300°C):** 14.4 x 10⁻⁶/°C **Mechanical Properties (Room Temperature - Annealed Condition)** * **Tensile Strength:** 380 - 550 MPa (55 - 80 ksi) * **Yield Strength (0.2% Offset):** 170 - 380 MPa (25 - 55 ksi) * **Elongation (in 2 inches / 50 mm):** 35% min * **Hardness (Rockwell B):** 65 - 80 HRB --- #### **International Standards** Our Alloy 404 / Monel 404 forgings are produced in compliance with major international standards to guarantee quality and interchangeability. * **ASTM (American Society for Testing and Materials):** * **B 164:** Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire. * **UNS Number:** N04404 * **ASME (American Society of Mechanical Engineers):** * **SB-164:** Equivalent to ASTM B164 for boiler and pressure vessel code applications. * **AMS (Aerospace Material Specification):** * **AMI 4676:** Covers wire for electronic components. * **DIN (Deutsches Institut für Normung):** * **DIN 17743:** Designation for wrought NiCu alloys. * **ISO (International Organization for Standardization):** * **ISO 6208:** Wrought nickel and nickel alloys — Plate, sheet and strip. *We can also provide materials certified to other specific national or customer specifications upon request.* --- #### **Product Applications** Monel 404 forgings are primarily specified for their specialized physical properties rather than high strength. Key applications include: * **Electronics & Electrical Engineering:** * Lead frames for integrated circuits (ICs) and transistors. * Transistor and diode caps and bases. * Waveguides and other microwave components. * Electrical connectors and terminals. * **Aerospace & Defense:** * Components for gyroscopes and inertial guidance systems. * Hermetic seals for sensors and electronic packages. * Non-magnetic structural parts in sensitive equipment. * **Cryogenics:** * Components for liquid natural gas (LNG) systems and other cryogenic applications where non-magnetic behavior is essential. * **Specialized Industrial:** * Bellows and diaphragms. * Glass-to-metal sealing components. --- #### **Summary** **Alloy 404 / Monel 404 Forgings** represent a specialized material solution where standard engineering properties are secondary to precise physical characteristics. Their unique combination of low magnetic permeability, good electrical conductivity, and excellent forgeability makes them an indispensable choice for high-reliability components in the electronics and aerospace industries. Our commitment to quality ensures that every forging meets the stringent requirements of these advanced applications. **Contact us today to discuss your specific requirements and receive a technical consultation.**

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 2946 gallon liquid totes Special package is available on request.