The reason why steel can be widely used

 1. The storage capacity of iron, which is not only sub-aluminum, is relatively easy to develop.

2. iron ore processing has the advantages of relatively high efficiency, and good quality, and the most important low cost.

3. the physics of steel, relatively stable, can be divided into construction engineering steel, and profiles, plates, etc., quality and chemical composition is also relatively different types, you can use it in all aspects of the economy.

4. in iron will also add some rare metals, so that it will perform different functions, and this technology can not use other materials to replace it, such as carbon steel, alloy steel and so on.

5. Steel is also a product that can be recycled.

6. this kind of steel has a relatively excellent weldability, and this is also a higher kind of metal materials, and its strength is also a higher kind.

7. the strength of this material is better, and its flexibility, tensile strength will be balanced, if it is compared with wrought iron, the edge is also more sharp. The most important thing is that its brittleness is higher than that of cast iron, and its impact resistance and tensile properties are also better.