ASTM E709 PDF

A guide increases the awareness of information and approaches in a given subject area. Examples of practices include, but are not limited to: application, assessment, cleaning, collection, decontamination, inspection, installation, preparation, sampling, screening and training. To resolve this technical issue, the ASTM committee formed a task group in to draft a new standard practice that includes hard requirements, but is geared towards more industrial applications. With ASTM E, aerospace-specific requirements are not imposed on industrial applications like billet, tube, powdered metal, pipeline, tank or welding inspections. But at the same time, calibration and equipment reliability checks are improved and standardized.

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Magnetic particle testing may be applied to raw material, semifinished material billets, blooms, castings, and forgings , finished material and welds, regardless of heat treatment or lack thereof. It is useful for preventive maintenance testing. This guide describes magnetic particle testing techniques that are recommended for a great variety of sizes and shapes of ferromagnetic materials and widely varying examination requirements. Since there are many acceptable differences in both procedure and technique, the explicit requirements should be covered by a written procedure see Section It should be pointed out, however, that after indications have been produced, they must be interpreted or classified and then evaluated.

For this purpose there should be a separate code, specification, or a specific agreement to define the type, size, location, degree of alignment and spacing, area concentration, and orientation of indications that are unacceptable in a specific part versus those which need not be removed before part acceptance. Conditions where rework or repair is not permitted should be specified. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Historical Version s - view previous versions of standard. Work Item s - proposed revisions of this standard. More E A smoother surface or a pulsed current improves mobility of the magnetic particles under the influence of the magnetic field to collect on the surface where magnetic flux leakage occurs. Magnetic particle testing may be applied to raw material, semifinished material billets, blooms, castings, and forgings , finished material and welds, regardless of heat treatment or lack thereof. It is useful for preventive maintenance testing. This guide describes magnetic particle testing techniques that are recommended for a great variety of sizes and shapes of ferromagnetic materials and widely varying examination requirements.

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