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ASTM A299 Grade B boiler steel plate with minimum yield strength above 325 Mpa,and tensile strength within 550-690 Mpa.Comparing with pressure vessel steel plate A299 Grade A,yield strength above 290 Mpa and tensile strength within 515-655 Mpa,pressure vessel steel plate SA299 Grade B owned a higher values.Additional technical requirements for boiler steel plates SA299 Grade B such as simulated post-weld heat treatment,low temperature impcting test,drop weight test and high temperature tension test.Ultrasonice test have to be done for SA299 Grade B boiler steel plate when rolling in our steel mill.

Mechanical Properties of A299 Grade B steel plate

 

Chemical composition for A299 Grade B boiler steel (Product Analysis Max%)

A299 /A299M covers manganese, silicon carbon steel plate for used in welded boiler and others pressure vessels in steel grade A299 Grade A and A299 Grade B.ASTM A299 plates in 50 mm and under in thickness are normally supplied in the as-rolled condition. Plates may be ordered normalized or stress relieved, or both. Plates over 50 mm in thickness shall be normalized.

Shanghai Katalor Industry Co., Ltd Is specialized in the production of steel plate, steel pipe, steel bar, it is located in Shanghai, with advanced technology and services, if you need ASTM A299 Grade B steel, please give us a message.

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