Astm 609

Páginas: 28 (6980 palabras) Publicado: 15 de enero de 2011
Designation: A 609/A 609M – 91 (Reapproved 1997)
AMERICAN SOCIETY FOR TESTING AND MATERIALS 100 Barr Harbor Dr., West Conshohocken, PA 19428 Reprinted from the Annual Book of ASTM Standards. Copyright ASTM

An American National Standard

Standard Practice for

Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof1
This standard is issued under thefixed designation A 609/A 609M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope 1.1 This practice2 covers the standards and procedures forthe pulse-echo ultrasonic examination of heat-treated carbon, low-alloy, and martensitic stainless steel castings by the longitudinal-beam technique. 1.2 This practice is to be used whenever the inquiry, contract, order, or specification states that castings are to be subjected to ultrasonic examination in accordance with Practice A 609/A 609M. 1.3 This practice contains two procedures forultrasonic inspection of carbon, low-alloy, and martensitic stainless steel castings, that is, Procedure A and Procedure B. Procedure A is the original A 609/A 609M practice and requires calibration using a series of test blocks containing flat bottomed holes. It also provides supplementary requirements for angle beam testing. Procedure B requires calibration using a back wall reflection from a series ofsolid calibration blocks.
NOTE 1—Ultrasonic examination and radiography are not directly comparable. This examination technique is intended to complement Guide E 94 in the detection of discontinuities.

able for High-Temperature Service3 E 94 Guide for Radiographic Testing4 E 317 Practice for Evaluating Performance Characteristics of Ultrasonic Pulse-Echo Testing Systems Without the Use ofElectronic Measurement Instruments4 2.2 Other Document: SNT-TC-1A Recommended Practice for Non-Destructive Testing Personnel Qualification and Certification5 3. Ordering Information 3.1 The inquiry and order should specify which procedure is to be used. If a procedure is not specified, Procedure A shall be used. 3.2 Procedure A—Flat-Bottomed Hole Calibration Procedure: 3.2.1 When this practice is to beapplied to an inquiry, contract, or order, the purchaser shall furnish the following information: Quality levels for the entire casting or portions thereof, Sections of castings requiring longitudinal-beam examination, Sections of castings requiring dual element examination, Sections of castings requiring supplementary examination, using the angle-beam proceduredescribed in Supplementary Requirement S1 in order to achieve more complete examination, and Any requirements additional to the provisions of this practice. 3.3 Procedure B: Back-Wall Reflection Calibration Procedure—When this procedure is to be applied to an inquiry, contract, or order, the purchaser shall designate the quality levels for the entire casting or applicable portions. PROCEDUREA—FLAT-BOTTOMED HOLE CALIBRATION PROCEDURE 4. Apparatus 4.1 Electronic Apparatus:
Annual Book of ASTM Standards, Vol 01.02. Annual Book of ASTM Standards, Vol 03.03. Available from American Society for Nondestructive Testing, 914 Chicago Ave., Evanston, IL 60202.
4 5 3

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SIunits are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this practice. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this...
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