Secondly, non-ferrous metals also play a critical role in the power industry. Metals such as copper and aluminum are the primary materials used in manufacturing high-voltage transmission lines and transformers. Moreover, non-ferrous metals are widely employed across various sectors, including shipbuilding, automotive, machinery manufacturing, and construction.

The advancement of these technologies has enabled them to produce more refined and intricate metalwork, such as inlaid metal objects, metal decorations for ceramic surfaces, gem-studded metal jewelry, weapons, and even chariots.

By analyzing the composition of metallic materials, we can gain a deeper understanding of the reasons and underlying principles behind their unique properties. This is because the atoms in different metallic materials vary significantly in terms of crystal structure and bonding characteristics, leading to distinct performance traits. Only by thoroughly examining the material's composition can we accurately determine the most suitable processing methods for that specific metal. Armed with this knowledge—combined with theoretical insights and practical experience—we can identify the optimal techniques tailored to each metal's unique makeup. After all, employing the right metalworking approach not only enhances efficiency but also ensures that the material’s exceptional properties are fully preserved.

The machinability of metallic materials refers to the difficulty of cutting and machining them. Machining performance is influenced by factors such as the metal's internal structure. Key factors affecting the machinability of metallic materials include hardness, microstructure, and processing capabilities. Elements like sulfur (S) and aluminum (Al), which reduce the strength and hardness of steel, can significantly alter machinability—particularly when combined with differences in microstructure, such as sorbite, which tends to degrade machining properties.

These recycling technologies have a wide range of applications in practical settings. In the automotive exhaust catalyst industry, they are among the most commonly used catalysts. Because automotive exhaust catalysts contain precious metals such as platinum, palladium, and rhodium, recovering and reusing them is highly economically beneficial. Similarly, they serve as crucial catalysts in the petrochemical industry. In the electronics sector, these materials are essential for manufacturing semiconductor devices and electrical contacts. Additionally, they are also utilized in industries like jewelry production and tableware manufacturing.

Metallic materials are primarily categorized into ferrous metals and non-ferrous metals, and depending on their composition, they can further be divided into pure metals, alloys, and more—each finding applications across a wide range of industries. The chemical composition of a metal is the key factor determining its material properties, and understanding this relationship allows metals to be effectively integrated into various products.

Metal materials are widely used in mechanical components within the field of machining. These components typically operate under conditions of normal temperature, atmospheric pressure, and in environments resistant to corrosion. Moreover, the loads they must endure vary depending on their specific application. When subjected to external forces, metal materials need to exhibit strong resistance to deformation or failure—this is precisely what defines their mechanical properties. These properties serve as the primary criteria for selecting materials during manufacturing. In fact, throughout the detailed production process and material selection phase, it’s crucial to match the mechanical characteristics of the metal with the nature of the applied load. After all, different performance requirements dictate distinct needs for the various properties of metallic materials.