ASTM A770 PDF

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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The tearing may remain completely subsurface or appear at plate edges or at weld toes. Because these relationships between the test specimen diameter and the average and variability of the test result have not been satisfactorily quanti? Further strain can cause the remaining metallic ligaments to shear or rupture, resulting in the step-like fracture appearance.

Reduction of Area Requirements S3. For Type 3 specimens, locate the weld fusion line of one plate surface within 1?

Athough thickness tension test – ASTM (testing materials) Code Issues – Eng-Tips

The number of tests required will depend upon the thickness of the plate being tested and the reduced section length selected. The Type A specimen provides a reduced section length greater than the plate thickness. Originally approved astj 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. The more common processes, used singly or in combination, are: However, lamellar tearing is not solely con?

ASTM A770/A770M – 03(2012)E1

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Promoting, selling, recruiting, coursework and thesis posting is forbidden. However, unless the order speci?

The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

Reasons such as asym, duplicates, flames, illegal, vulgar, or students posting their homework. The tests shall be representative of the plate in its?

Download Now White Paper: Historical Version s – view previous versions of standard. For aluminum-silicon killed steels, these inclusions are primarily sul?

The steelmaking processes are x770 all intended for the same purpose, but will improve the through-thickness ductility to various degrees depending on the process used. Link to Active This link will always route to the current Active version of the standard. The principal purpose of the testing is to provide a measure of the resistance of a steel plate to lamellar tearing.

A series of two or more Type F specimens may be used to cover the full thickness of the plate. Lamellar tearing may also result from loads on the plate surface. The most widely accepted method of measuring the material ductility factor of susceptibility to lamellar tearing is the reduction of area of a round tension test specimen oriented perpendicular to the rolled surface of a plate.

For plates over 6 in. A minimum slenderness ratio of 2 was selected for the standard Type 2 specimen to allow a 0. Within the text, the SI units are shown in brackets. A number in parentheses indicates the year of last reapproval. Digital Transformation may be defined in a number a7700 different ways by analysts or enterprise software vendors.

Click Here to join Eng-Tips and talk with other members! Strains in the through-thickness direction can cause individual inclusions to fractures or decohere from the surrounding steel matrix, thus initiating a void.

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ASTM A A M_百度文库

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? For plates over 41? 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.

It does not refer to the condition of the plate. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

The potential variability of the test results also increases the possibility that subsequent testing of a steel plate quali? 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. This standard has been approved for use by agencies of the Department of Defense.

Join your peers on the Internet’s largest technical engineering professional community. Defense manufacturing is all about project manufacturing and project accounting.

Number of Tests S4. On the other hand, a reduction in the magnitude and concentration of these inclusions to adtm low level tends to preclude any easy fracture path along the low ductility inclusions and the steel exhibits improved ductility in a throughthickness direction.

Register now while it’s still free! This specification covers procedures and acceptance standards for the determination of reduction of area using steel plates as tension test specimen.