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ASTM A721/A721M-02

Current Revision

Standard Test Method for Ductility of Oriented Electrical Steel

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1.1 This test method covers determination of the ductility of grain-oriented silicon steel by use of an apparatus known variously as a tinner's brake, hand folder, or an apron brake.

1.2 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this test method, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this test method.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


This is a specialized bend test for grain-oriented steel not covered under the provisions of Test Methods E 290.

This test is applicable to grain-oriented silicon steel such as covered in Specifications A 876/A 876M in commercial thicknesses and widths up to 36 in. [910 mm].

SDO ASTM: ASTM International
Document Number A721
Publication Date Oct. 10, 2002
Language en - English
Page Count 2
Revision Level 02
Supercedes
Committee A06.01
Publish Date Document Id Type View
Oct. 10, 2002 A0721_A0721M-02 Revision
June 1, 2021 A0721_A0721M-02R21 Reaffirmation
April 1, 2016 A0721_A0721M-02R16 Reaffirmation
Oct. 1, 2011 A0721_A0721M-02R11 Reaffirmation
Nov. 1, 2007 A0721_A0721M-02R07 Reaffirmation