t(n) = 65n2 - 355n + 720 where n = 1, 2, 3, ...
The yield strength for St52-3 steel is typically around 355 MPa. This means that the material can withstand up to 355 megapascals of stress before it starts to deform plastically. Yield strength is an important mechanical property as it indicates the point at which a material transitions from elastic to plastic behavior.