This standard establishes metallographic methods for determining the contamination of metal products made from steel and alloys with non-metallic inclusions
GOST 1778-2022 history
2023GOST 1778-2022 Steel and alloy metal products. Metallographic methods for the determination of nonmetallic inclusions
1970GOST 1778-1970 Steel. Metallographic methods for the determination of nonmetallic inclusions