Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 648 (2006): Cold rolled non-oriented electrical steelsheet and strip - Fully processed type [MTD 4: WroughtSteel Products]

AMENDMENT NO. 5 NOVEMBER 2012TO

IS 648 : 2006 COLD ROLLED NON-ORIENTEDELECTRICAL STEEL SHEET AND STRIP — FULLY

PROCESSED TYPE — SPECIFICATION

(Fifth Revision)

[Foreword, Para 3, Sl No. (e)] — Substitute the following for the existing:

‘e) Number of grades with this amendment will be thirty eight.’

[Page 3, Table 1 (see also Amendment No. 2 and 3)] — Insert thefollowing new grades in the existing table at the end:

Table 1 Designation of Electrical Steel Grades(Clauses 4, 6.1.3,7.1.1.2,7.1.2.1, 7.1.2.4.1 and 9.2)

MaximumCore Loss at

50 Hz(W/kg)

a.c. Magnetization(50 Hz)

Minimum values of BMax Tesla

SlNo.

Designation NominalThickness

mm

1.0 T 1.5 T 2 500A/m

5 000A/m

10 000A/m

Anisotropyof Total

Specific Losat 1.5 T(% Max)

No. ofBends(Min)

Assumeddensitykg/dm3

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)xxxii 35C230 0.95 2.30 1.49 1.60 1.70 ±17 2 7.60xxxiii 35C235

0.350.95 2.35 1.49 1.60 1.70 ±17 2 7.60

xxxiv 50C940 0.50 4.20 9.40 1.62 1.72 1.81 ±8 10 7.85xxxv 65C310 0.65 1.25 3.10 1.49 1.60 1.70 ±15 2 7.60xxxvi 100C600 2.60 6.00 1.53 1.63 1.72 ±10 2 7.60

xxxvii 100C700 3.00 7.00 1.54 1.64 1.73 ±8 3 7.65xxxviii 100C800

1.00

3.60 8.00 1.56 1.66 1.75 ±6 5 7.70

NOTE — a.c. magnetization can be checked and reported in any value between 5 000 to10 000 A/m as per mutual agreement apart from above (2 500, 5 000 and 10 000 A/m).

1

Amend No. 5 to IS 648 : 2006

(Page 4, clause 7.2.4) — Substitute the following for the existing clause:

‘7.2.4 Material when supplied with insulation, the nature of the insulation andits properties shall be subject to mutual agreement between the purchaser andthe manufacturer.’

(Page 4, clause 7.2.5) — Delete.

(MTD 4)Reprography Unit, BIS, New Delhi, India

2

AMENDMENT NO. 4 OCTOBER 2011TO

IS 648 : 2006 COLD ROLLED NON-ORIENTEDELECTRICAL STEEL SHEET AND STRIP — FULLY

PROCESSED TYPE — SPECIFICATION( Fifth Revision )

(Page 4, clause 7.1.2.1) — Substitute the following for the existing:

‘The specified values of maximum total specific loss at 50 Hz to be guaranteed at1.5 T shall be as given in Table 1. They apply.

– for the thicknesses 0.35 mm, 0.50 mm and 0.65 mm to aged test pieces– for the thickness 1.00 mm to non-aged test pieces

The values of the specific total loss at 1.0 T given in Table 1 are for informationonly.

NOTE — The ageing shall be carried out as specified in IS 649.’

(Page 4, clause 7.1.2.3) — Delete.

(Page 4, clause 7.2.5) — Substitute the following for the existing:

‘The minimum values for insulation resistance of coatings types C-3, C-4, C-5,C-6 and C-7 of Annex C shall be as given in Table 2.’

(Page 4, Title of Table 2) — Substitute the following for the existing:

‘Minimum Values for Insulation Resistance’

(MTD 4)

Reprography Unit, BIS, New Delhi, India

AMENDMENT NO. 2 MARCH 2009

TO

IS 648 : 2006 COLD ROLLED NON-ORIENTED ELECTRICAL STEEL SHEET

AND STRIP ― FULLY PROCESSED TYPE ― SPECIFICATION

( Fifth Revision )

[Page 3, Table 1, Sl No. (xvii)] ― Insert the following after Sl No. (xvii) and renumber the

subsequent serial numbers and add the note at the end of the existing table:

Maximum Core

Loss at 50 Hz

(W/kg)

a.c. Magnetization (50 Hz)

Minimum Values of B Max

Tesla

Sl No. Designation Nominal

Thickness

mm

1.0 T 1.5 T 2 500

A/m

5 000

A/m

10 000

A/m

Anisotropy of

Total Specific

Loss at 1.5 T

(% Max)

No. of

Bends

(Min)

Assumed

Density

kg/dm2

xviii) 50C900 3.8 9.00 1.61 1.70 1.78 ± 10 10 7.80

xix) 50C1000 0.50

4.4 10.00 1.62 1.72 1.81 ± 10 10 7.85

NOTE ― a.c. magnetization can be checked and reported in any value between 5 000 to 10 000 A/m as per mutual agreement,

apart from above (at 2 500, 5 000 & 10 000 A/m).

(Page 4, clause 6.3.1) ― Substitute the following for the existing:

‘The surface shall be smooth and clean, free from grease and rust (the same should not be confused with

some coloration of insulation coating inherent in manufacturing process). Dispersed defects such as

scratches, blisters, aesthetic type physical damages, etc, are permitted if they are within limits of thickness

tolerance and not detrimental to method of working or correct use of supplied material. The limit,

classification and disposition shall be subject to agreement between the purchaser and the manufacturer.’

(MTD 4)

Reprography Unit, BIS, New Delhi, India