Carbon steel plate is an indispensable material in construction, machinery manufacturing and many other industrial fields. Its wide application is due to its excellent mechanical properties and relatively low cost. Today, we will focus on Q345 carbon steel plate, which is a very popular type of steel in the Chinese market.

What is carbon steel plate?

Carbon steel plate, as the name implies, is a type of steel with carbon as the main alloying element. The carbon content has a significant effect on the properties of steel. As the carbon content increases, the strength and hardness of the steel will increase, but the plasticity and toughness will decrease. Carbon steel plates usually contain 0.1% to 2.0% carbon, and can be divided into low carbon steel, medium carbon steel and high carbon steel according to the carbon content.

What is the difference between Q345 carbon steel plate?

Q345 carbon steel plate is a low-alloy high-strength structural steel specified in the Chinese national standard GB/T 1591-2018. Its "Q" stands for yield strength, and "345" means that its minimum yield strength is 345 MPa. The carbon content of Q345 steel plate is usually between 0.12% and 0.22%, and it also contains a certain amount of alloying elements such as manganese, silicon, and vanadium, which help improve the overall performance of the steel plate.

Characteristics of Q345 carbon steel plate

High strength: The yield strength and tensile strength of Q345 steel plate are higher than those of ordinary carbon steel.

Good welding performance: The carbon equivalent of Q345 steel plate is low and the welding performance is good.

Good plasticity and toughness: Even at low temperatures, Q345 steel plate can maintain a certain plasticity and toughness.

Corrosion resistance: Due to the presence of alloy elements, the corrosion resistance of Q345 steel plate is better than that of ordinary carbon steel.

Other models of carbon steel plates

In addition to the Q345 model, there are many other models of carbon steel plates, including but not limited to:

Q235 carbon steel plate: This is a common low-carbon steel that is widely used in building structures and general mechanical parts.

Q390 carbon steel plate: It has high strength and good welding performance and is suitable for steel structural parts of important structures.

Q460 carbon steel plate: This is a high-strength steel suitable for structures that bear greater loads.

Application of Carbon Steel Plate

Carbon steel plate is widely used in the following fields due to its superior performance and cost-effectiveness:

Construction industry: used to manufacture steel structures, bridges, building formwork and scaffolding, etc.

Machinery manufacturing: used to manufacture gears, bearings, springs and other mechanical parts.

Vehicle manufacturing: used to manufacture structural parts of automobiles, ships and trains.

Energy industry: used to manufacture transmission towers, wind power towers and oil drilling equipment.

Agricultural machinery: used to manufacture parts of agricultural vehicles and agricultural machinery.

In conclusion

Q345 carbon steel plate is a low-alloy high-strength structural steel with high strength and good welding performance. It is widely used in multiple industrial fields. By understanding the different models and applications of carbon steel plates, we can better choose the right materials to meet different engineering needs. Whether it is Q345 carbon steel plate or other models of carbon steel plates, they are an indispensable part of the development of modern industry.

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