ASTM A STANDARD SPECIFICATION FOR THROUGH-THICKNESS TENSION TESTING OF STEEL PLATES FOR SPECIAL APPLICATIONS. ASTM A A M – Designation: A /AM – 03 Standard Speci? cation for Through-Thicknes. copy of ASTM A is included in Appendix A of this report. In the process of . of a rolled W-shape that is made of ASTM A Grade 50 steel.

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Download Now Defense manufacturing is all about project manufacturing and z770 accounting. Register now while it’s still free! It is also accepted that smaller diameter test specimens will tend to give greater variability to the resulting reduction in area asrm. Several types of test specimen shall have specified values of plate thickness, diameter, minimum radius, and length of reduced section.

Alternative test specimen may be used in place of the standard test specimen. Close this window and log in.

The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Are you an Engineering professional? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

ASTM A770/A770M – 03(2012)E1

It does not refer to the condition of the plate. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

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The tearing may remain completely subsurface or appear at plate edges or at weld toes. The steelmaking processes are not all intended for the same purpose, but will improve the through-thickness ductility to various degrees depending on the process used. Operator technique will also be a factor in increasing scatter, particularly in the measurement of the? It is generally caused by strain induced in the thickness direction resulting from shrinkage of the weld deposit and by the restraint imposed by the components that comprise the weldment.

The intent of aatm speci? On the other hand, a reduction in the magnitude and concentration of these inclusions to a low level tends to preclude any easy fracture path along the low ductility inclusions and the steel exhibits improved ductility in a throughthickness direction.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Students Click Here Join Us!

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Within the text, asfm SI units are shown in brackets. Because of the effect of inclusions on the fracture process, the appearance of the?

To provide a high resistance to lamellar tearing may require the use of special steel-making processes that can reduce the oxygen and sulfur contents in the steel to asrm low levels. Current edition approved May 10, Last a70 edition approved in as A — 86 This minimum value may be from 1. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

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This specification covers procedures and acceptance standards for the determination of reduction of area using steel plates as tension test q770. This abstract is a brief summary of the referenced standard.

ASTM A A M_百度文库

To improve the through-thickness ductility and thus the resistance of the steel to lamellar tearing, it is necessary to reduce the level of the nonmetallic inclusions. This standard has been approved for use by agencies of the Department of Defense.

The number of tests required will depend upon the thickness of the plate being tested and the reduced section length selected. See Test Methods and De? By joining you are opting in to receive e-mail. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.

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Last modified: January 3, 2020