This specification covers structural quality alloy steel plates.
The plates are usually specified to chemical composition requirements, but tensile properties may also be specified.
When tensile properties are required, the specific requirements must be compatible with the chemical composition, condition, and plate thickness.
The plates are furnished from heats melted to a fine austenitic grain size practice, unless the order specifies that a coarse austenitic grain size shall be furnished.
The plates are available in the following four conditions:
Condition AR-As rolled (hot rolIed),
Condition N-Normalized, and
Condition NT-Normalized and tempered.
The plates are available in the following three forms:
Form II-Circular and semi-circular, and
Form III-Sketch, including rings.
The plates are available in the following five edge
Edge I -Mill edge,
Edge 2-Univers1 mill edge,
Edge 3-Sheared edge,
Edge 4-Gas cut edge, and
Edge 5-Special cut edge.
The plates are available in the following seven finishes:
Finish 1-As rolled (hot rolled),
Finish 2-Blast cleaned,
Finish 3-Blast cleaned and oiled,
Finish 5-Pickled and oiled,
Finish 6-Painted, one prime coat, and
Finish 7-Painted, one prime coat and one finish coat,
The plates are usually specified to have Finish 1.
Supplementary Requirements are provided for additional requirements which may be specified on the order.
When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized.
The values stated in inch-pound units are to be regarded as the standard.