scope:

This Standard specifies requirements for quenched and tempered manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates (hereafter referred to as steel plates) to be used for nuclear reactors and other pressure vessels.

NOTE The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 9328-1 : 2018 Steel flat products for pressure purposes - Technical delivery conditions - Part 1 : General requirements

ISO 9328-2 : 2018 Steel flat products for pressure purposes - Technical delivery conditions - Part 2 : Non-alloy and alloy steels with specified elevated temperature properties (overall evaluation : MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.