1、 Carbon content and properties of 1045 steel

1045 steel belongs to carbon structural steel, also known as oil steel. Classified by carbon content, 1045 steel belongs to medium carbon steel, with a carbon content between 0.42 and 0.50. Compared to other medium carbon steels, 1045 steel has lower hardness, lower wear resistance, greater thermal deformation, and weaker polishing properties than 1040 steel. Therefore, cold forming is relatively poor.

Heat treatment can improve the hardness, toughness, and wear resistance of 1045 steel. During welding, heat treatment is required in advance, and stress annealing is also required after welding is completed.

2、 The purpose of 1045 steel

According to its usage, 1045 steel is a typical structural steel. Structural steel is a widely used steel used in various construction and mechanical equipment components, brackets, bearings, etc.

Due to its high strength and good plasticity, 1045 steel has also been widely used in some high demand mechanical equipment. For example, 1045 steel is often used to make high load tool parts such as forging molds, cutting tools, and steel wheels.

3、 Advantages and disadvantages of 1045 steel

The advantage of 1045 steel lies in its good machinability and weldability, making it a typical plastic steel. In addition, after certain heat treatment, the toughness and wear resistance of 1045 steel will also be enhanced.

The disadvantage of 1045 steel is that its castability is significantly worse than that of low-carbon steel. Meanwhile, due to its low hardness and low wear resistance, it is prone to wear under high load working conditions. In addition, cold forming is poor and requires certain heat treatment to achieve good plasticity and toughness.

In summary, as a type of structural steel, 1045 steel has been widely used in the fields of construction and mechanical manufacturing. Although its performance has some limitations, heat treatment and other processes can improve its properties.