Questions & Answers
Anisotropic (transformer) steel (GOST 21427.2): E250A, E260A, E270A, E280A, E290A, E300A, E310A, E320A, E330A, E340A.
Isotropic electrical steel (GOST 21427.1): E180, E190, E200, E210, E220, E230, E240, E250, E260, E270, E280, E290, E300, E310, E320, E330, E340.
Cold-rolled oriented electrical steel: E290OR, E300OR, E310OR.
Improved electrical steels: E300P, E310P, E320P, E330P, E340P.
GOST Standards for Technical Requirements and Properties
GOST 12119.3-98 — Sheet Test Methods;
GOST 12119.2-98 — Methods for Determining Specific Losses;
GOST 12119.1-98 — Methods for Determining Magnetic Properties;
GOST 12119.0-98 — Electrical Steel. General Test Methods.
GOST Standards for Sheet Assortments
GOST 19903-74 / GOST 19903-2015 — Hot-Rolled Sheets (Used as Blanks);
GOST 19904-90 — Cold-Rolled Sheets. Assortment.
Main GOST Standards for Electrical Sheets
GOST 21427.3-83 — Electrical Steel. General Specifications;
GOST 21427.2-83 — Cold-rolled anisotropic electrical steel (transformer grade);
GOST 21427.1-83 — Cold-rolled isotropic electrical steel (dynamometer grade).
GOST for quality control and testing
GOST 11701-84 — Testing of sheet metal products;
GOST 1497-84 — Tensile testing;
GOST 7565-81 — Sampling;
GOST 7566-2018 — Metal products. General requirements for delivery.