Significance and Use

This practice provides a means of assuring that products supplied during ship construction and maintenance are substantially the same as the materials on which the original selection was based. The selection of a paint for shipboard use frequently involves laboratory and field evaluations of candidate materials as part of the specification process. When a paint is selected, it shall have the same composition and characteristics throughout the delivery period as the materials originally evaluated.

When significant changes in composition or paint characteristics are observed, it is necessary to determine the cause of the change (production error or formulation change) and its impact on coating performance. Actions to take if a formulation change is required are specified in 6.5.

This practice is not meant to cover all possible chemical or physical tests that may be used to identify a coating. Additional tests may be needed to meet specific user needs.

This practice does not recommend specific tolerance limits for the tests indicated. Tolerance values need to be agreed upon by the coating supplier, the shipbuilder, and the ship's owner.

This practice does not establish critical attributes that must be controlled. These attributes are selected by the shipbuilder and the ship's owner based on specific needs (for example, colors).

1. Scope

1.1 This practice provides the quality control receipt inspection procedures for protective coatings (paints) procured for end item use on ships and other marine structures. The practice includes methods and procedures for verifying that coating materials received are within the range of physical and chemical characteristics as those originally specified and tested.

1.2 This standard does not purport to address the safety concerns associated with its use. It is the responsibility of the user of this standard to consult and 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

D185 Test Methods for Coarse Particles in Pigments

D523 Test Method for Specular Gloss

D562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer

D1200 Test Method for Viscosity by Ford Viscosity Cup

D1210 Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage

D1308 Test Method for Effect of Household Chemicals on Clear and Pigmented Organic Finishes

D1309 Test Method for Settling Properties of Traffic Paints During Storage

D1475 Test Method For Density of Liquid Coatings, Inks, and Related Products

D1640 Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature

D1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials

D2196 Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational (Brookfield type) Viscometer

D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates

D2369 Test Method for Volatile Content of Coatings

D2621 Test Method for Infrared Identification of Vehicle Solids From Solvent-Reducible Paints

D2697 Test Method for Volume Nonvolatile Matter in Clear or Pigmented Coatings

D2698 Test Method for Determination of the Pigment Content of Solvent-Reducible Paints by High-Speed Centrifuging

D2805 Test Method for Hiding Power of Paints by Reflectometry

D2832 Guide for Determining Volatile and Nonvolatile Content of Paint and Related Coatings

D3278 Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus

D3925 Practice for Sampling Liquid Paints and Related Pigmented Coatings

Keywords

Coating application; Inspection--marine vessels; Marine coatings systems/applications; Paint testing; Protective coatings; Quality control (QC)--paints/related coatings/materials; Shipbuilding materials (general);

ICS Code

ICS Number Code 47.020.05 (Materials and components for shipbuilding)

DOI: 10.1520/F0940-99R09

ASTM International is a member of CrossRef.

ASTM F940