St52-3 steel plate, under DIN17100 standard St52-3 steel plate, under DIN17100 standard, we can regard St52-3 steel plate as low alloy steel St52-3 steel plate is one mainly of low alloy steel.
ST52-3 steels is a low alloy high strength structural steel which can be readily welded to other weldable steel. ST52-3 steel’s Mechanical properties is Yield strength more than 355 MPa, tensile strength 490-630Mpa.
Steel plate St52-3 is most normal used among all kinds of low alloy steel grades.It is equal to Chinese steel grade Q345B, low alloy high strength steel plate. Low alloy steel plate St52-3 is used to manufacture the plants of factory, the common constructor and construction machinery and equipment. The additional technical requirements for structural steel plate St52-3 shall be Ultrasonic examination, heat treatment, low temperature impacting,shot blasting and painting for prevent rusty when transport.
Application:DIN17100 St52-3 Steel Plates are used in Construction of Bridges, Highway Construction and Other Engineering construction.

Mechanical property for St52-3 Low alloy steel:
| Thickness (mm) | |||||
| St52-3 | ≤ 16 | > 16 ≤ 40 | > 40 ≤ 63 | > 63 ≤ 80 | > 80 | 
| Yield strength (≥Mpa) | 355 | 345 | 335 | 325 | 315 | 
| 
 | < 3 | ≥ 3 ≤ 100 | > 100 | ||
| Tensile strength (Mpa) | 510-680 | 490-630 | 490-630 | ||
Chemical composition for St52-3 Low alloy steel (Product Analysis Max%)
| Main chemical elements composition of St52-3 | ||||||
| Thickness(mm) | C | Si | Mn | P | S | N | 
| T≤30 | 0.22 | 0.60 | 1.70 | 0.050 | 0.060 | - | 
| T>30 | 0.24 | |||||
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