Tag: Metals and metallic materials

New ASTM E1444 2011 Edition on Standard Practice for Magnetic Particle Testing

ASTM E1444, “Standard Practice for Magnetic Particle Testing,” has been issued as a new 2011 Edition with a redesignation to ASTM E1444/E1444M-11.  This new document number shows that the document has been revamped to include both feet and inches and metric measurements.  It replaces MIL-STD-1949, as well as the previous ASTM E1444-05 Edition from 2005.

This practice establishes minimum requirements for magnetic particle testing used for the detection of surface or slightly subsurface discontinuities in ferromagnetic material. Guide ASTM E709 can be used in conjunction with this practice as a tutorial.

Magnetic particle testing consists of magnetizing the area to be examined, applying suitably prepared magnetic particles while the area is magnetized, and subsequently interpreting and evaluating any resulting particle accumulations. Maximum detectability occurs when the discontinuity is positioned on the surface and perpendicular to the magnetic flux.

The magnetic particle testing method is used to detect cracks, laps, seams, inclusions, and other discontinuities on or near the surface of ferromagnetic materials. Magnetic particle testing may be applied to raw material, billets, finished and semi-finished materials, welds, and in-service parts. Magnetic particle testing is not applicable to non-ferromagnetic metals and alloys such as austenitic stainless steels.

ASTM E1444/E1444M establishes the basic parameters for controlling the application of the magnetic particle testing method. This practice is written so that it can be specified on the engineering drawing, specification, or contract. It is not a detailed how-to procedure to be used by the examination personnel and, therefore, must be supplemented by a detailed written procedure that conforms to the requirements of this practice.

This ASTM Standard and all current (as well as many obsolete) Editions can be purchased from Document Center Inc. at our website, www.document-center.com.  Or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  We are able to answer many questions about standards and welcome your inquiries.

 

New ASTM E1742/E1742M 2011 Edition released on Radiographic Examination

ASTM E1742/E1742M, 2011 Edition, titled “Standard Practice for Radiographic Examination” has just been released and is available now from Document Center Inc.  This practice establishes the basic parameters for the application and control of the radiographic method. The standard is written so it can be specified on the engineering drawing, specification, or contract.

E1742/E1742M establishes the minimum requirements for radiographic examination for metallic and nonmetallic materials.  The criteria presented for the radiographic examination are applicable to all types of metallic and nonmetallic materials.  However, the standard is intended to control the quality of the radiographic images and not to establish acceptance criteria for parts and materials.

It is not a detailed how-to procedure to be used by a non-destructive test (NDT) facility and so must be supplemented by a detailed procedure. ASTM Test Methods E1030, E1032, and E1416 contain information to help develop detailed technique/procedure requirements.

Again, because the number of the standard has both the E1742 and E1742M included, the values are stated in either SI units or inch-pound units.  They are to be regarded separately as standard because the values stated in each may not be exact equivalents.  Therefore, each system needs to be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

This ASTM Standard, and all ASTM documents, may be purchased from Document Center Inc. through our website, www.document-center.com.  Or call us at 650-591-7600, send us a fax at 650-591-7617, or email us at info@document-center.com.  Staff is ready to assist you with your orders and questions.