Boiler Quality Plates

The boiler quality and pressure vessel steel plates are primarily intended for use in welded pressure vessels where notch toughness is important. These grades cover a range of tensile strengths from 450 - 620 MPa and this versatility explains much of the specifications popularity. According to different strength levels, the plates are available in four grades: Grade 55, Grade 60, Grade 65, and Grade 70. The maximum thickness of plates is primarily limited only by the capacity of the composition to meet the specified mechanical property requirements. The steel is killed and conforms to fine austenitic grain size requirements. Generally, steel plates are hot cold formed are moulded to desired shape for major boilers to withstand high temperature, pressure and adverse corrosive environments.