Metal Forming Industries has the proven capability to provide its customers with components manufactured from a variety of different materials. Since 1999, MFI has developed specialty cold forming, impact extrusion, and precision machining processes in copper, aluminum, and brass materials. MFI process engineering can provide specific material recommendations based on a detailed review of the customer designed part application.
Cold forming and impact extrusion are versatile and cost-effective manufacturing processes used to create a wide variety of parts and components. These processes involve shaping metals at room temperature (cold forming) or using high-impact force to shape metals through a die (impact extrusion). The choice of material plays a significant role in determining the mechanical properties, performance, and suitability of the final part for its intended application. Among the most commonly used materials in these processes are copper, aluminum, and brass. Each of these metals offers distinct advantages and properties, making them ideal for different industries and applications.
Copper in Cold Forming and Impact Extrusion
Copper is a metal known for its excellent electrical conductivity, thermal conductivity, and corrosion resistance. Its versatility makes it a popular choice for cold forming and impact extrusion, especially in electrical, electronic, and plumbing applications.
Cold Forming with Copper
Copper is relatively soft, making it highly malleable and well-suited for cold forming. It is often used in the creation of electrical connectors, fittings, and other components that require excellent conductivity and corrosion resistance.
Advantages of Copper in Cold Forming:
- Electrical Conductivity: Copper’s high electrical conductivity makes it the material of choice for components such as electrical connectors, terminals, and wiring.
- Thermal Conductivity: Copper is also an excellent conductor of heat, making it ideal for heat exchangers, radiators, and cooling systems.
- Corrosion Resistance: Copper naturally forms a protective oxide layer, offering exceptional resistance to corrosion, particularly in marine and outdoor environments.
Common Copper Alloys Used in Cold Forming:
- Brass (Copper-Zinc Alloy): Brass is widely used in cold forming for components like electrical connectors, fittings, and hardware. Its low friction properties and corrosion resistance are key reasons for its popularity.
- Bronze (Copper-Tin Alloy): Bronze is known for its strength, wear resistance, and corrosion resistance, making it ideal for parts like bearings, bushings, and electrical contacts.
Impact Extrusion with Copper
Copper is one of the most common metals used in impact extrusion, especially for products that need to be formed into hollow or tubular shapes. Copper alloys, such as brass, are commonly used to create parts like beverage cans, containers, and various other metal enclosures.
Advantages of Copper in Impact Extrusion:
- Excellent Formability: Copper’s malleability allows it to flow easily into the desired shape during impact extrusion, making it ideal for creating detailed and precise parts.
- Strength and Durability: Copper and its alloys, such as brass, offer a good balance of strength and ductility, ensuring that extruded parts can withstand mechanical stresses and environmental factors.
- High-Quality Finish: Impact-extruded copper parts typically have a smooth surface finish, reducing the need for additional post-processing.
By selecting the appropriate material for cold forming and impact extrusion, manufacturers can create high-quality, durable parts that meet the specific requirements of their applications. Whether for lightweight automotive components, high-performance electrical connectors, or corrosion-resistant plumbing fittings, these metals continue to play a vital role in modern manufacturing.
