ASTM E433-71(R2018) pdf free download

ASTM E433-71(R2018) pdf free download.Standard Reference Photographs for Liquid Penetrant Inspection
1. Scope
1.1 These reference photographs are supplied as a means of establishing types and characteristics of surface discontinuities detectable by the penetrant examination methods. They may be used as a reference for acceptance standards, specifications and drawings. 1.2 Actual dimensions including maximum length of indi- cations and number of indications per unit area must be specified by the users of this document. No attempt has been made to establish limits of acceptability or the metallurgical cause of a discontinuity. N OTE 1—Examples of these reference photographs are shown in Figs. 1-8. 1.3 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Identification
4.1 The types of discontinuity indications covered by these reference photographs are listed and described in Table 1. Each type of discontinuity indication is designated by a Roman numeral. The class of indication is designated by the letters A through D. Individual photographs within type and class are identified by numbers. Each reference photograph is, therefore, identified with the proper Roman numeral, letter, and number.
5. Method of Preparation
5.1 The reference photographs were reproduced from mas- ter photographs which are the property of ASTM. The photo- graphs retain the original photographic contrast.
6. Basis for Use of Reference Photographs
6.1 These reference photographs are intended for use when specified in the inquiry, contract, order material specification, or applicable code, and when the severity is mutually agreed upon between the manufacturer and the purchaser. It is recognized that it is impossible to rigidly interpret indications from a set of photographic references. Consequently, there is a need for close cooperation between manufacturer and pur- chaser. 6.2 Zones of inspection and severity levels in each zone shall be shown on applicable drawings or otherwise specified. Unless otherwise specified all accessible surfaces shall be examined. 6.3 These reference photographs are intended to depict penetrant indications of surface discontinuities. They are not intended to indicate the depth of such discontinuities. 6.4 Applicable penetrant examination methods and tech- niques are described in the latest issue of Test Method E165.