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ASTM D4938-89(2013)

Current Revision

Standard Test Method for Erosion Testing of Antifouling Paints Using High Velocity Water (Withdrawn 2022)

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1.1 This test method covers the determination of erosion rates for marine antifouling paint systems immersed in flowing natural seawater.

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. For a specific hazard statement, see Section 7.


4.1 This test method is intended to measure the erosion rates of ablative antifouling paint systems exposed to flowing water at velocities designed to subject the paint system to shear stresses experienced in service.

4.2 Measurement of erosion rates are necessary to help in the assessment of ablative antifouling paint film thicknesses required for fouling control between scheduled drydockings of ships, in the selection of materials, in producing quality assurance, and in understanding the performance mechanism.

4.3 The test data is intended to serve as a guide for predicting the service life of ablative antifouling paints in order to calculate the necessary paint thickness to fit specified deployment cycles. Erosion rates of antifouling paints in service will vary depending on such factors as: berthing location, geographic area of operation, salinity, pH, and temperature of seawater. It should also be recognized that some areas of the ship are subject to different erosion rates.

4.4 The degree of correlation between results obtained from this test method and shipboard service has not been determined.

SDO ASTM: ASTM International
Document Number D4938
Publication Date June 1, 2013
Language en - English
Page Count 4
Revision Level 89(2013)
Supercedes
Committee D01.45
Publish Date Document Id Type View
June 1, 2013 D4938-89R13 Revision
June 1, 2007 D4938-89R07 Reaffirmation
May 10, 1996 D4938-89R96 Reaffirmation
April 28, 1989 D4938-89R02 Reaffirmation