1. Introduction to ST52-3 steel plate materials:
ST52-3 is equivalent to the domestic grade Q345, (16mn) St52-3 new material number: 1.0570, old material number: 1.0841. St52-3 has its tensile strength and yield point as its main characteristics. St52-3 is a low-alloy high-strength steel. The steel number is composed of St, the characteristic value of the steel and the quality index. It is a steel type that has selected deoxidation methods. The corresponding mark (U or R) is placed in front of the steel number for special purposes. Steels such as: USt52-3 or RRSt37-2. ST52-3 steel plate corresponds to national standard Q355, analysis of yield tensile properties of ST52-3.
2. ST52-3 steel plate material technical standards and heat treatment status:
ST52-3 steel plate belongs to the German standard low alloy steel, which implements the standard DIN17100. The materials under the DIN standard are: ST37-2, STE355, STE460, etc. ST52-3 steel plate heat treatment: hot rolling, controlled rolling, normalizing.
ST52-3 steel plate complies with the technical standard DIN17100, and its performance is close to the national standard Q355B.
3. What do ST52-3, ST52-3-Z25, ST52-3-Z35, Z15, Z25, and Z35 represent:
ST52-3 is a Z-direction performance steel, the Z-direction is the thickness direction of the steel plate, and the Z-direction is a lamellar tear resistance test of the steel plate. The ranking order from high to low is Z35, Z25, Z15.
4. Uses of ST52-3 steel plate:
ST52-3 is suitable for use in civil construction, underground engineering, bridge structures, marine structures, container manufacturing and automobile and machine manufacturing.
5. ST52-3 delivery status:
The delivery status of ST52-3 is control and normalizing.
6. Chemical composition of ST52-3:
C：≤0.20
Si: ≤0.5
Mn: 0.90-1.65
P:0.035
S: 0.035
Nb: 0.005-0.05
V: 0.01-0.12
Ti: 0.006-0.05
Cr: ≤0.30
Ni：≤0.50
Cu: ≤0.40
Mo：≤0.10
N：≤0.015
Als: ≥0.01
