A709 Grade 36, Grade 50, and Grade 50W: A709 is the specification used for steel plate used in the manufacture of bridges. These grades are often specified with charpy tests referencing the specific zone (or climatic region) in which the bridge will be in use. The charpys are specified as non-fracture critical which is a per heat test (frequency H), or fracture critical which is a per plate test (Frequency P). Bridge steels can also be ordered to the ASSHTO M270 Spec referenced as AASHTO M270 Grade 36, AASHTO M270 Grade 50, AASHTO M270 Grade 50W.
A36: A36 is one of the most widely used grades of steel plate. It is used in practically every industry and its applications are too numerous to mention.
A709 Grade 36, Grade 50, and Grade 50W: A709 is the specification used for steel plate used in the manufacture of bridges. |
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