This standard specifies terms and definitions, ordering information, dimensions, shape, mass, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of irradiation-resistant and heat-resistant steels.
This standard applies to hot-rolled or forged steel bars with diameter not larger than 150mm for nuclear industry (hereinafter referred to as steel bars).
The steel grades and chemical compositions in this standard also apply to ingots, billets and their products.
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