Q345GJCZ15 Introduction to American Standard Boiler Vessel Plates

Q345GJCZ15 Introduction to American Standard Boiler Vessel Plates

Q345GJCZ15 Introduction to American Standard Boiler Vessel Plate
Q345GJCZ15 It is steel used in high-rise building structures, Q stands for yield, 345 is yield strength, GJ is the meaning of "high building" in Chinese, Z15 is the performance representing the thickness direction. At the same level, there are Q345GJCZ25 and Q345GJCZ35. Q345GJCZ15 steel plates are used to make steel for high-rise and important building structures. It is required to have high impact resistance, satisfactory strength, excellent welding function, certain yield ratio, and if necessary, thickness direction function.

Chemical composition

Tabulation: Depu Steel Date: 2024-01-18

C	Si		Mn	P	S	Nb	Ti
≤0.02	≤0.55	1.35-1.6	≤0.018	≤0.01	≤0.06	≤0.03

Note:
(1): In order to improve the properties of steel, other trace alloying elements other than the above table can be added, and the data comes from the network and is for reference only.
(2): The allowable deviation of the chemical composition of the finished steel plate shall comply with the provisions of
GB/T222 Q345GJCZ15 and the delivery status of the steel plate: the steel plate shall be normalized and hot-rolled, normalized + tempered, quenched + tempered as the delivery state. The specific should be agreed upon by both the supply and demand sides.
If there are a large number of inclusions gathered into clumps in the Q345GJCZ15 steel plate, the Z-direction performance of the steel plate will be inconsistent. The main components of these inclusions are carbon (nitrogen) compounds of Nb, Ti, and oxides of MnS, Al, and Ca.