scope:

Part 2 of this standard, in addition to part 1, specifies requirements for plates and wide flats of high yield strength alloy special steels. The grades and qualities are given in tables 1 (chemical composition) and 3 and 4 (mechanical properties) and are supplied in the quenched and tempered condition as given in 7.2. The steels specified in this standard are applicable to hot-rolled plates and wide flats with a minimum nominal thickness of 3 mm and a maximum nominal thickness ≤ 150 mm for grades S460, S500, S550, S620 and S690, a maximum nominal thickness ≤ 100 mm for grade S890 and a maximum nominal thickness ≤ 50 mm for grade S960, in steels which, after quenching and tempering, have a minimum specified yield strength of 460 N/mm² to 960 N/mm².