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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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Combining values from the two systems may result in nonconformance with the speci? The number of tests and test positions have not been established that would provide a good estimate of both the mean and the variability of through-thickness tensile reduction of values of a plate.

Strains in the through-thickness direction can cause individual inclusions to fractures or decohere from the surrounding steel matrix, thus initiating a void. Shielded metal arc, friction, stud, or electron-beam welding methods have proven to be suitable.

Lamellar tearing may also result from loads on the plate surface.

ASTM A770/A770M – 03(2012)E1

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. The intent of this speci? The Eng-Tips staff will check this out and a77 appropriate action. Location of Test Coupons S5.

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.

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Close this window and log in. The potential variability of the test results also increases the possibility that subsequent testing of a steel plate quali?

Last previous edition approved in as A — 86 The number of tests required will depend upon the thickness of the plate being tested and the reduced section length selected.

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. Current edition approved May 10, A superscript epsilon e indicates an editorial change since the last revision or reapproval.

In all cases, the minimum length of the reduced section must be as speci? It is informational only and not an official part of the astk the full text of the standard itself must be referred to for its use and application. For plates over 6 in. 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.

This minimum value may be from 1. Link to Active This link will always route to the current Active version of the standard.

A minimum slenderness ratio of 2. The more common processes, used singly or in combination, are: Some of these factors are discussed in X2. Click Here to join Eng-Tips and talk with other members! Alternative test a7770 may be used in place of the standard test specimen.

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Take the test coupons from the center of the plate width. Are you an Engineering professional? In silicon semikilled or fully killed steels, these inclusions are primarily oxides present as silicates and sul?

A number asfm parentheses indicates the year of last reapproval. Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.

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

Below this minimum value, the reduction at the failure point in the reduced section is restrained by the larger cross section away from the reduced section. Download Now White Paper: By joining you are opting in to receive e-mail.

The tension testing method shall provide a measure of the resistance of a steel plate to lamellar tearing. It does not refer to the condition of the plate. Tensile Strength Requirements S1.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any a77 mentioned in this standard. It is also accepted that smaller diameter test specimens will tend to give greater variability to the resulting reduction in area values.

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