What is the composition of ST 37 steel coil

ST 37 steel coil is a commonly used carbon steel grade that contains mainly iron and carbon. The composition of ST 37 steel coil can vary slightly depending on the manufacturer and specific production process, but typically it contains:

Iron (Fe): Makes up the majority of the alloy, typically around 99%.

Carbon (C): Typically ranges from 0.17% to 0.20%, giving the alloy moderate strength and hardness.

Manganese (Mn): Often added in small amounts for increased toughness and hardenability, typically around 0.50%.

Silicon (Si): Added in small amounts for improved surface quality and corrosion resistance, typically around 0.15%.

Phosphorus (P): Often limited to a maximum of 0.05% due to its negative effect on ductility and weldability.

Sulfur (S): Often limited to a maximum of 0.05% due to its negative effect on machinability and toughness.

ST 37 steel coil composition makes it suitable for a variety of applications, including structural components, machinery parts, and automotive parts.