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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Defense manufacturing is all about project manufacturing and project accounting. Number of Tests S4. This documents may be applied as a supplement to all product standards for flat products and sections of fully killed steel, except stainless steel.

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

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 z770 comprise the weldment. Register now while it’s still free! A minimum slenderness ratio of 2 was selected for the standard Type 2 specimen to allow a 0.

Alternative test specimen may be used in place of the standard test specimen. 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.

The joining method used shall be one which results in a minimal heat-affected zone in the portion of the plate to be tested. A Test Methods and De? The principal purpose of the testing is to provide a measure of the resistance of a steel a707 to lamellar tearing. However, A is not clear in scope. The tension testing method shall provide a measure of the resistance of a steel plate to lamellar tearing.

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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.

ASTM A770/A770M – 03(2012)E1

Several types of test specimen shall have specified values of plate thickness, diameter, minimum radius, and length of reduced section. The principal purpose of the testing is to provide a measure of the resistance of a steel plate to lamellar tearing. Within the text, the SI units are shown in brackets. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. However, unless the order speci?

Combining values from the two systems may result in nonconformance with the specification. Download Now White Paper: Within the plate thickness dimension speci?

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. The tearing may remain completely subsurface or appear at plate edges or at weld toes.

The Eng-Tips staff will check this out and take appropriate action. The length of the reduced section Aas shown in Fig. See Test Methods and De? Tensile Strength Requirements S1. Download Now Defense manufacturing is all about project manufacturing and project accounting.

Close this window and log in. Join your peers on the Ast, largest technical engineering professional community. The number of tests required will depend upon the thickness of the plate being tested and the reduced section length selected. Students Click Here Join Us! Digital Transformation may be defined in a number of different ways by analysts ast enterprise software vendors.

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This standard has been approved for use by agencies of the Department of Defense. Historical Version s – view previous versions of standard. The Type A specimen provides a reduced section length greater than the plate thickness. 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 very low levels.

For aluminum-silicon killed steels, these inclusions are primarily sul? The Type B specimen provides a reduced section length of 21? Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Because these relationships between the test specimen diameter and the average and variability of the test result have not been satisfactorily quanti?

Red Flag This Post Please let xstm know here why this post is inappropriate. It is also accepted that smaller diameter test specimens will tend to give greater variability to the resulting reduction in area values.

For Type 3 specimens, locate the weld fusion line of one plate surface within 1? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Some of these factors are discussed in X2.