① What are the advantages and disadvantages of steel compared with other engineering materials?

It has light weight and high strength, and is suitable for making long-span or high-rise buildings; it has good plastic toughness and excellent seismic resistance; the material quality is easy to control and ensure during the production and construction process, and the material is uniform and conforms to the mechanical assumptions in the design process; it is easy to manufacture and easy to construct.

The cycle is short; the steel recycling rate is high, which can reach almost 100%, which can effectively reduce the generation of construction waste; it is easy to improve, adding different alloys or controlling the content of other elements in the steel can produce steel with different properties, which is convenient for production and production according to the needs of production and life.

Processing; Disadvantages: The corrosion resistance of steel is poor; the strength of steel is significantly affected by temperature, the fire resistance and cold resistance are poor, the strength is significantly reduced at high temperatures, and it is brittle at low temperatures; the price of steel is higher than that of ordinary building materials, and the economy is not significant; completely hand-made

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