IS 3024 : 2015 Grain Oriented Electrical Steel Sheet and Strip

Reaffirmed 2021

1 SCOPE

1.1 This standard covers the requirements of flat rolled, fully processed (in final annealed condition) grainoriented, electrical steel sheets or strips and intended for the construction of transformer cores operating at moderate to high inductions at commercial power frequencies and other magnetic circuits.

1.2 This standard does not cover intermediate material such as MgO coated steel and strip intended for manufacture of grades as defined in Table 1 and Table 2 or any CRGO products.

1.3 The electrical steel grades described in this standard include conventional and high permeability grain oriented electrical steel tested at 1.7 Tesla, 50 Hz or 60 Hz.

1.4 These sheets and strips shall be coated on both sides with inorganic insulation capable of withstanding stress relief annealing treatment

2 REFERENCES

The following standards contain provisions, which through reference in this text constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

649 : 1997 Methods of testing steel sheets for magnetic circuits of power electrical apparatus (second revision)

8910 : 2010 General technical delivery requirements for steel and steel products

13795 (Part 1) : 1993 Glossary of terms relating to special alloys : Part 1 Soft magnetic materials