ASTM-C536 Standard Test Method for Continuity of Coatings in Glassed Steel Equipment by Electrical Testing

ASTM-C536 - 1983 R18 EDITION - CURRENT
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Standard Test Method for Continuity of Coatings in Glassed Steel Equipment by Electrical Testing
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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 C537.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Significance and Use

4.1 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.

Keywords

continuity of coating; discontinuities; glass coated steel equipment; glass coating; high voltage test; porcelain enamel;; ICS Number Code 25.220.50 (Enamels)

To find similar documents by ASTM Volume:

02.05 (Metallic and Inorganic Coatings; Metal Powders and Metal Powder Products)

To find similar documents by classification:

25.220.50 (Enamels)

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Document Number

ASTM-C536-83(2018)

Revision Level

1983 R18 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Oct. 1, 2018

Document Type

Test Method

Page Count

3 pages

Committee Number

B08.12