1.1 This specification covers cold-rolled carbon structural steel (SS) sheet, in cut lengths or coils. It includes five strength levels designated as Grade A with yield point 25 ksi (170 MPa) minimum; Grade B with 30 ksi (205 MPa) minimum; Grade C Types 1 and 2 with 33 ksi (230 MPa) minimum; Grade D Types 1 and 2 with 40 ksi (275 MPa) minimum; and Grade E with 80 ksi (550 MPa) minimum.

1.2 Grades A, B, C, and D have moderate ductility whereas Grade E is a full-hard product with no specified minimum elongation.

1.3 The values stated in inch-pound units are to be regarded as the standard.