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ASTM E1418

2016 Edition, August 1, 2016

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Standard Practice for Visible Penetrant Testing Using the Water-Washable Process



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Product Details:

  • Revision: 2016 Edition, August 1, 2016
  • Published Date: August 1, 2016
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 6
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This practice describes procedures for visible liquid penetrant examination utilizing the water-washable process. It is a nondestructive practice for detecting discontinuities that are open to the surface such as cracks, seams, laps, cold shuts, laminations, isolated porosity, through leaks or lack of fusion and is applicable to in-process, final, and maintenance examination. This practice can be effectively used in the examination of nonporous, metallic materials, both ferrous and nonferrous, and of nonmetallic materials such as glazed or fully densified ceramics, and certain nonporous plastics, and glass.

This practice also provides the following references:

A reference by which visible penetrant examination procedures using the water-washable process can be reviewed to ascertain their applicability and completeness.

For use in the preparation of process specifications dealing with the visible, water-washable liquid penetrant examination of materials and parts. Agreement between the user and the supplier regarding specific techniques is strongly recommended.

For use in the organization of the facilities and personnel concerned with the liquid penetrant examination.

This practice does not indicate or suggest criteria for evaluation of the indications obtained. It should be noted, however, that after indications have been produced, they must be interpreted or classified and then evaluated. For this purpose there must be a separate code, specification, or a specific agreement to define the type, size, location, and orientation of indications considered acceptable, and those considered unacceptable.

The values stated in inch-pound units are regarded as standard. SI units given in parentheses are for information only.

Basis of Application—There are areas in this practice that may require agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization. These areas are identified as follows:

Penetrant type, method and sensitivity,

Accept/reject criteria,

Personnel qualification requirements,

Grit blasting,

Etching,

Indication/discontinuity sizing,

Total processing time, and

Marking of parts.

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 standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.