ASTM C536 - 83(2009)

    Standard Test Method for Continuity of Coatings in Glassed Steel Equipment by Electrical Testing

    Active Standard ASTM C536 | Developed by Subcommittee: B08.12

    Book of Standards Volume: 02.05


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    ASTM C536

    Significance and Use

    This test method is designed to detect existing discontinuities in the glass coating of glassed steel equipment while maintaining a voltage low enough as to be unlikely to cause breakdown of the coating. The test is adaptable for manufacturing inspection in the processing of equipment and for field use to find existing defects which can be plugged or repaired before serious damage is done to the equipment. As a means of positive detection, it is applicable to process studies, quality control, or specification.

    1. Scope

    1.1 This test method covers the detection of discontinuities in the glass coating of glassed steel equipment where such discontinuities would result in early failure due to the attack of the chemical contents of the vessel on the metal substrate. It is applicable to (1) provide a manufacturing and inspection test of glassed-steel equipment designed for relatively mild, low-temperature corrosive service, and (2) the field testing of similar equipment used in more severely corrosive environment.

    Note 1—A manufacturing test method for the latter type of equipment is described in Test Method C 537.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 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

    C537 Test Method for Reliability of Glass Coatings on Glassed Steel Reaction Equipment by High Voltage


    ICS Code

    ICS Number Code 25.220.50 (Enamels)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/C0536-83R09

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