Container plate classification

Boiler container plate, used to manufacture a variety of boilers and important accessories, because the boiler plate in the middle temperature (below 350°C) under the high pressure state, in addition to withstand high pressure, but also by impact, fatigue load and water and gas corrosion, it is required to ensure a certain strength, but also have good welding and cold bending performance. It is an our country use is most wide, pressure with biggest dosage container appropriation steel plate.

Q345R

Q345R is a large type of steel plate - container plate

Brand name: Q345R 16MnR 16MnG.

According to the new classification of "GB 713-2008 Steel Plate for Boilers and Pressure Vessels" implemented on 1 September 2008, 16Mng, 16MnR and 19Mng were merged into Q345R. Q345R is ordinary low alloy steel, boiler pressure vessel commonly used steel, delivery status: hot rolled or normalizing, a low alloy steel. The properties are similar to those of Q345(16mm steel plate with yield strength greater than 345Mpa). The tensile strength is between (510-640), the elongation is greater than 21%, and the zero degree V-type impact energy is greater than 34J. Q345R process reference standard GB713-2008.

Q345R steel is a special plate for pressure vessel with yield strength of 340MPa. It has good comprehensive mechanical properties and technological properties. The content of phosphorus and sulfur is slightly lower than that of low alloy high strength steel Q345(16Mn) steel, in addition to the tensile strength, elongation requirements than Q345(16Mn) steel, but also to ensure the impact toughness. It is an our country use is most wide, pressure with biggest dosage container appropriation steel plate.

Q345R Features

Q345R steel plate is a special plate for pressure vessel with yield strength of 265-345MPa. It has good comprehensive mechanical properties and technological properties. The content of phosphorus and sulfur is slightly lower than that of low alloy high strength steel Q345(16Mn) steel, in addition to the tensile strength, elongation requirements than Q345(16Mn) steel, but also to ensure the impact toughness. It is an our country use is most wide, pressure with biggest dosage container appropriation steel plate.

Q245R

It is a kind of steel plate -- boiler plate. The grade expression method: The grade of low-alloy high-strength structural steel similar to Q345R is represented by the first letter of the Chinese pinyin of the yield strength value "Qu" and the pressure vessel "Rong". For example, Q245R. Q -- the first letter of Qu in Chinese Pinyin. 245 -- yield strength value. R: Rong first letter in Chinese Pinyin.

With special composition and properties

Mainly used for the use of pressure vessels, for purposes, temperature, corrosion resistance, the container plate should be selected, is not the same.

Delivery status: hot rolling, controlled rolling, normalizing. Inspection shall be made by agreement of the supply and demand parties.

Such as: 20R, 16MnR, 14Cr1MoR, 15CrMoR, 09MnNiDR, 12Cr2Mo1R, 16MnR(HIC), 20R(HIC) and so on classification

The above brands are commonly used in China; Foreign brands are also available, such as SA516Gr60, SA516GR70 and so on.

Niobium, vanadium and titanium elements can be added to Q245R steel, and their contents shall be filled in the quality certificate. The sum of the above three elements shall be no more than 0.050% respectively