The weekend price forecast of SA572 grade 60 carbon steel plate sheet

Whose hardness is higher between 20# steel and45# steel, SA572 grade 60 carbon steel plate sheet? Both 20# steel and 45# steel belong to high-quality carbon structural steel. According to the characteristics of high-quality carbon structural steel, its carbon content determines the performance of the steel. The higher the carbon content, the higher the hardness and strength of the steel, the lower the plasticity and toughness. The carbon content of No.20 steel and No.45 steel are 0.20% and 0.45% respectively, which shows that the hardness of No.45 steel is higher under the same process.

Our company will set up a full-time service engineer for the project, who is responsible for the interface and coordination of technical support and after-sales service of the SA572 grade 60 carbon steel plate sheet project. In response process of customer service center, in case of technical support and after-sales service demand, the user shall contact the full-time engineer of SA572 grade 60 carbon steel plate sheet customer service center, and the technical personnel will give corresponding answers and on-site treatment according to the needs of users.

The sulfur element (S element) comes from the ore and fuel coke of steelmaking. It is a harmful element in SA572 grade 60 carbon steel plate sheet etc. steel. Sulfur exists in steel in the form of iron sulfide (FeS). FeS and Fe form a low melting point (985℃) compound. The hot working temperature of steel is generally above 1150 - 1200℃, so when the steel is hot working, the premature melting of FeS compound causes the workpiece to crack, which is called "hot brittleness". It reduces ductility and toughness of steel and causes cracks during forging and rolling. Sulfur is also detrimental to welding performance and reduces corrosion resistance.

The toughness of steel such as SA572 grade 60 carbon steel plate sheet is the ability of steel to absorb energy in the process of plastic deformation and fracture, and also the ability of steel to resist impact load. It is related to and different from the plasticity of steel. It is the comprehensive performance of strength and plasticity. The strength plasticity index of steel is obtained by static tensile test. When these indexes are used to bear the dynamic load structure, there are obvious limitations.