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ASTMA609A609M碳素钢,低合金钢和马氏体不锈钢

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Designation: A 609/A 609M –91 (Reapproved 2002)Standard Practice forCastings, Carbon, Low-Alloy, and Martensitic StainlessSteel, Ultrasonic Examination Thereof1This standard is issued under the fixed designation A 609/A 609M; the number immediately following the designation indicates the yearof 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. Scope1.1 This practice 2 covers the standards and procedures forthe pulse-echo ultrasonic examination of heat-treated carbon,low-alloy, and martensitic stainless steel castings by thelongitudinal-beam technique.1.2 This practice is to be used whenever the inquiry,contract, order, or specification states that castings are to besubjected to ultrasonic examination in accordance with Prac-tice A 609/A 609M.1.3 This practice contains two procedures for ultrasonicinspection of carbon, low-alloy, and martensitic stainless steelcastings; that is, Procedure A and Procedure B. Procedure A isthe original A 609/A 609M practice and requires calibrationusing a series of test blocks containing flat bottomed holes. Italso provides supplementary requirements for angle beamtesting. Procedure B requires calibration using a back wallreflection from a series of solid calibration blocks.NOTE 1—Ultrasonic examination and radiography are not directlycomparable. This examination technique is intended to complement GuideE 94 in the detection of discontinuities.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in ...

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ASTMA609A609M碳素钢,低合金钢和马氏体不锈钢

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