ASTM E797 / E797M - 10

    Standard Practice for Measuring Thickness by Manual Ultrasonic Pulse-Echo Contact Method

    Active Standard ASTM E797 / E797M | Developed by Subcommittee: E07.06

    Book of Standards Volume: 03.03


      Format Pages Price  
    PDF Version 8 $42.00   ADD TO CART
    Print Version 8 $42.00   ADD TO CART
    Standard + Redline PDF Bundle 16 $50.40   ADD TO CART


    Significance and Use

    The techniques described provide indirect measurement of thickness of sections of materials not exceeding temperatures of 93°C (200°F). Measurements are made from one side of the object, without requiring access to the rear surface.

    Ultrasonic thickness measurements are used extensively on basic shapes and products of many materials, on precision machined parts, and to determine wall thinning in process equipment caused by corrosion and erosion.

    Recommendations for determining the capabilities and limitations of ultrasonic thickness gages for specific applications can be found in the cited references. ,

    1. Scope

    1.1 This practice provides guidelines for measuring the thickness of materials using the contact pulse-echo method at temperatures not to exceed 93°C (200°F).

    1.2 This practice is applicable to any material in which ultrasonic waves will propagate at a constant velocity throughout the part, and from which back reflections can be obtained and resolved.

    1.3 UnitsThe 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 non-conformance with the standard

    1.4 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E317 Practice for Evaluating Performance Characteristics of Ultrasonic Pulse-Echo Testing Instruments and Systems without the Use of Electronic Measurement Instruments

    E494 Practice for Measuring Ultrasonic Velocity in Materials

    E543 Specification for Agencies Performing Nondestructive Testing

    E1316 Terminology for Nondestructive Examinations

    ASNT Documents

    ANSI/ASNTCP-189 Standard for Qualification and Certification of Nondestructive Testing Personnel

    Aerospace Industries Association Document

    NAS-410 Certification and Qualification of Nondestructive Testing Personnel Available from Aerospace Industries Association of America, Inc. (AIA), 1000 Wilson Blvd., Suite 1700, Arlington, VA 22209-3928, http://www.aia-aerospace.org.


    ICS Code

    ICS Number Code 17.040.20 (Properties of surfaces)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/E0797_E0797M-10

    ASTM International is a member of CrossRef.

    ASTM E797 / E797M

    Citing ASTM Standards
    Back to Top