Metal foam as a new material, because of its own great superiority and practicality, also received the attention of many countries. Foam metal has a series of good advantages such as low density, good heat insulation, good sound insulation and the ability to absorb electromagnetic waves, etc. It is a new type of material that has been developed gradually with human technology and is commonly used in aerospace, petrochemical and a series of industrial development.

Metal foam can be said as a special metal material, to be very good application prospects. At present, in the scientific research community, the foam metal used in the military field; developed a military bulletproof vest that can block armor-piercing bullets; at the same time, according to the characteristics of the foam metal itself, the foam metal into a lightweight stainless steel composite material, used for armored vehicles to enhance the protection capacity, but also to further reduce the weight of the armored vehicle itself.
Foam metal this special metal material, compared to other metal materials, has more practicality and advantages of the case, the use of the cost is not too much higher. And with the further development of science and technology, the use of foam metal field and the scope is also further expanded.