Steel, a metal material with high strength, toughness and machinability, has become the "skeleton" of the development of modern society since the Industrial Revolution, and its applications have penetrated almost every field of human production and life.

Steel is an indispensable core material in construction projects, supporting all kinds of large-scale buildings and infrastructure with its high strength and stability.

The mechanical properties of steel (such as hardness, wear resistance, and toughness) make it the main raw material for mechanical parts.

The reason why steel is so widely used is that its performance can be adjusted. By adjusting the composition (such as adding alloying elements such as carbon, manganese, and nickel) and heat treatment processes (such as quenching and tempering), various types of steel can be obtained, ranging from soft and easy to process to ultra-high strength, from low temperature resistance to high temperature resistance, to meet the special needs of different scenarios. With the development of technology, new steel materials (such as nano-bainite steel and low-alloy wear-resistant steel) are still expanding their application boundaries and continue to provide support for industrial progress and social development.