Pressure vessel material issues
Thread Content
In pressure vessels, the letter R is used in the material designation to distinguish it from other materials. For example: what is the difference between 16MN and 16MNR, and what is the difference between 20R and 20?
Those with an R at the end denote materials used for pressure vessels
Those marked with R refer to sheets used for pressure vessels; their specifications are established by experts in pressure vessel materials appointed by the Pressure Vessel Committee, based on the requirements for such sheets and the domestic metallurgical capabilities, with some of the standards being higher than those for ordinary structural steel.
In the material specifications, “R” stands for sheet metal used for containers. Regarding the question raised by LZ, 16Mn refers generally to materials that can be used in the form of pipes, sheets, bars, or forgings, while 16MnR specifically denotes 16Mn sheet metal intended for use in containers. The understanding of 20’s 20R is the same as mentioned above.
R refers to steel plates specifically designed for pressure vessels
““R” refers to steel specifically designed for pressure vessels, while “G” refers to steel specifically designed for boilers. In the future, it may all be changed to “Y”, and referred to as steel specifically for pressure-bearing equipment.
16Mn generally refers to forgings, while 16MnR refers to sheets, right?
May I ask what are the differences in the properties of the materials mentioned by the original poster? ?
For example, there is a difference in performance between 20 and 20R
In the material specification, “R” refers to the sheet metal used for containers, while 16Mn is an umbrella term that can apply to pipes, sheets, bars, and forgings； And 16MnR specifically refers to 16Mn steel plates used for containers. The understanding of 20’s 20R is the same as mentioned above.