This standard specifies the microscopic test method for measuring non-metallic inclusions in rolled or forged steel products with a rolling ratio of 3 or more using standard drawings.
JIS G 0555:2003 history
2020JIS G 0555:2020 Microscopic testing method for the non-metallic inclusions in steel
2015JIS G 0555 AMD 1:2015 Microscopic testing method for the non-metallic inclusions in steel (Amendment 1)