ASTM E1444/E1444M-16 pdf free download.Standard Practice for Magnetic Particle Testing.
1.1 This practice establishes minimum requirements for magnetic particle testing used for the detection of surface or slightly subsurface discontinuities in ferromagnetic material. Guide E709 can be used in conjunction with this practice as a tutorial.
Nom 1—This Practice replaces MIL-STD-1949.
1.2 The magnetic particle testing method is used to detect cracks, laps. seams, inclusions, and other discontinuities on or near the surface of ferromagnetic materials. Magnetic particle testing may be applied to raw material, billets, finished and semi-finished materials, welds, and in-service parts. Magnetic particle testing is not applicable to non-ferromagnetic metals and alloys such as austdnhtic stainless steels. See Appendix X 1 for additional information.
1.3 All areas of this Practice may be open to agreement between the Cognizant Engineering Organization and the supplier, or specific direction from the Cognizant Engineering Organization.
1.4 This standard is a combined standard, an ASTM standard in which rationalized SI units and inch-pound units are included in the same standard, with each system of units to be regarded separately as standard.
1.4.1 Units—The values stated in either SI units or inch- pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1 .5 This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this siandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
5. General Practice
5. 1 Personnel Qualificaiion—Personncl performing examinations in accordance with this practice shall be qualified and certified in accordance with ASNT Recommended Practice No. SNT-TC-1A, ANSIIASNT Standard CP-189, NAS 410. or as specified in the contract or purchase order.
5.2 Agency Qualification—If specified in the contractual agreement. NDT agencies shall be qualified and evaluated as described in E543. The applicable edition of E543 shall be specified in the contractual agreement.
5.3 Written Procedure—Magnetic particle testing shall be performed in accordance with a written procedure applicable to the part or group of parts under examination. The procedure shall be in accordance with the requirements of this Practice. The process, when conducted in accordance with the written procedure. shall be capable of detecting discontinuities specified in the acceptance criteria. The written procedure may he general if it clearly applies to all of the specified parts being examined and meets the requirements of this practice. All written procedures. including technique sheets for specific pans. shall be approved by an individual qualified and certified at Level 111 for magnetic particle testing in accordance with the requirements of 5.1.ASTM E1444/E1444M pdf download.