1. High strength and hardness

       Alloying can effectively hinder the slip of atoms inside the metal, thereby significantly improving the strength and hardness of the material. For example, the strength of steel (iron carbon alloy) is much higher than that of pure iron; Hard aluminum (aluminum copper magnesium alloy) is harder than pure aluminum and is suitable for aircraft manufacturing. ‌12

       2. Excellent corrosion resistance

       Many alloys form dense oxide layers on the surface or enhance chemical stability through alloying elements such as chromium and nickel, thereby resisting corrosion. Stainless steel (such as S42020 alloy, containing elements such as chromium and nickel) is not easy to rust in humid environments or chemical equipment; Monel alloy (nickel copper alloy) exhibits outstanding corrosion resistance in reducing media. ‌23

       3. Lightweight advantages

       Nonferrous metal alloys represented by magnesium alloys and aluminum alloys have low density and can achieve structural weight reduction. Magnesium alloy is about 33% lighter than aluminum and 75% lighter than steel, making it a "green structural material" of the 21st century; In the fields of automobiles and aerospace, the use of magnesium alloys can reduce energy consumption and improve energy efficiency. ‌

       4. Good processing and formability

       Some alloys achieve excellent processing performance through process optimization, such as heat treatment and plastic deformation. For example, aluminum alloy is easy to cast and machine; The new welding technology has solved the problem of difficult deformation of magnesium alloys, making it suitable for the manufacturing of complex parts. ‌

       5. Multi functional physical performance

       High temperature resistance: Nickel based alloys (such as Inconel 600) maintain high strength and oxidation resistance at high temperatures, making them suitable for aircraft engines. ‌

       Electromagnetic shielding and shock absorption: Magnesium alloys have excellent electromagnetic shielding and damping properties, and are commonly used in electronic devices and precision instruments. ‌

       Thermal conductivity and recyclability: Some alloys (such as aluminum magnesium alloys) have good thermal conductivity and can be recycled, which is in line with the trend of green manufacturing. ‌

       6. Cost effectiveness and resource optimization

       With the advancement of technology, the production cost of alloys is gradually decreasing. For example, magnesium alloys, due to China's abundant resources (accounting for over 70% of the world's magnesium ore reserves) and their cost-effectiveness after large-scale production, can replace aluminum materials in fields such as new energy vehicles, helping to reduce costs and increase efficiency. ‌