St 52-3 is a grade of steel that corresponds to the German DIN 17100 standard. The composition of St 52-3 material is as follows:
Carbon (C): The carbon content in St 52-3 steel is typically held within a range of 0.20%-0.24% by weight.
Silicon (Si): The silicon content in St 52-3 steel is generally around 0.55% by weight.
Manganese (Mn): St 52-3 steel contains manganese in a range of 1.60%-1.90% by weight, contributing to improved strength and machinability.
Phosphorus (P): The phosphorus content in St 52-3 steel is limited to a maximum of 0.045% by weight to ensure good weldability and avoid brittleness.
Sulfur (S): The sulfur content in St 52-3 steel is kept below 0.045% by weight for enhanced weldability and improved internal soundness.
Other Alloying Elements: St 52-3 steel may contain small amounts of other alloying elements such as chromium (Cr), nickel (Ni), copper (Cu), and molybdenum (Mo) depending on its specific production and intended use.
It's important to note that the exact composition of St 52-3 steel may vary slightly depending on the manufacturing process and specifications followed by the steel producer. It is always advisable to consult the relevant material standards or technical data sheets for precise and up-to-date information on the composition of St 52-3 or any specific steel grade.