ASTM D1640-03

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

SIGNIFICANCE AND USE
These test methods are used to determine the various stages and rates of drying, curing, and film formation of organic coatings for the purpose of comparing types of coatings or ingredient changes, or both. This is significant in the development of organic coatings for various end uses and also for production quality control.
SCOPE
1.1 These test methods cover the determination of the various stages and rates of film formation in the drying or curing of organic coatings normally used under conditions of ambient room temperature.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2003
• ICS: 25.220.60 - Organic coatings
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.23 - Physical Properties of Applied Paint Films

Relations

• Replaces: ASTM D1640-95(1999) - Standard Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature
• Effective Date: 01-Dec-2003
• Replaced By: ASTM D1640-03(2009) - Standard Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature
• Effective Date: 01-Aug-2009
• Referred By: ASTM D7539-10(2020) - Standard Practice for Using a Test Chamber for Humidity Conditioning of Test Panels of Pavement Marking Paints
• Effective Date: 01-Dec-2003
• Referred By: ASTM D6763-16(2022) - Standard Guide for Testing Exterior Wood Stains and Clear Water Repellents
• Effective Date: 01-Dec-2003
• Referred By: ASTM D3322-23 - Standard Practice for Testing Primers and Primer Surfacers Over Preformed Metal
• Effective Date: 01-Dec-2003
• Referred By: ASTM D2454-23 - Standard Practice for Determining the Effect of Overbaking on Organic Coatings
• Effective Date: 01-Dec-2003
• Referred By: ASTM D5146-10(2019) - Standard Guide to Testing Solvent-Borne Architectural Coatings
• Effective Date: 01-Dec-2003
• Referred By: ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
• Effective Date: 01-Dec-2003
• Referred By: ASTM D4302-14(2021) - Standard Specification for Artists’ Oil, Resin-Oil, and Alkyd Paints
• Effective Date: 01-Dec-2003
• Referred By: ASTM D5895-20 - Standard Test Methods for Evaluating Drying or Curing During Film Formation of Organic Coatings Using Mechanical Recorders
• Effective Date: 01-Dec-2003
• Referred By: ASTM D564-87(2023) - Standard Test Methods for Liquid Paint Driers
• Effective Date: 01-Dec-2003
• Referred By: ASTM D7514-14(2022) - Standard Test Method for Evaluating Ink Stainblocking of Architectural Paint Systems by Visual Assessment
• Effective Date: 01-Dec-2003
• Referred By: ASTM D7733-12(2021) - Standard Specification for Acrylic Dispersion Ground
• Effective Date: 01-Dec-2003
• Referred By: ASTM C647-19 - Standard Guide to Properties and Tests of Mastics and Coating Finishes for Thermal Insulation
• Effective Date: 01-Dec-2003
• Referred By: ASTM D5098-16(2021) - Standard Specification for Artists' Acrylic Dispersion Paints
• Effective Date: 01-Dec-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1640–03
Standard Test Methods for
Drying, Curing, or Film Formation of Organic Coatings at
1
Room Temperature
This standard is issued under the fixed designation D 1640; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
TABLE 1 Recommended Film Thickness of Materials to be
1. Scope
A
Tested
1.1 These test methods cover the determination of the
Material Dry Film Thickness
various stages and rates of film formation in the drying or
B
Drying oils 1.25 6 0.25 mil (32 6 6 µm)
curing of organic coatings normally used under conditions of
Varnishes 1 6 0.1 mil (25 6 2 µm)
ambient room temperature.
Lacquers 0.5 6 0.1 mil (12.5 6 2 µm) (See 7.5.2)
1.2 The values stated in SI units are to be regarded as the Resin solutions 0.5 6 0.1 mil (12.5 6 2 µm)
Enamels 1.5 6 0.25 mil (36.5 6 6 µm)
standard. The values given in parentheses are for information
Oil paints 1.8 6 0.2 mil (45 6 2.5 µm) (See 6.1.2 )
only.
Water paints 1 6 0.1 mil (25 6 2 µm)
1.3 This standard does not purport to address all of the A
This table is a general guide to be used when nothing more specific is agreed
safety concerns, if any, associated with its use. It is the
upon between the purchaser and the seller.
B
See 6.1.2 and 7.5.1. Add driers a minimum of 24 h before test.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
purchaser and seller as to the substrate, film thickness, and
application method for testing the specific coating involved.
2. Referenced Documents
2
5. Test Conditions
2.1 ASTM Standards:
D 823 Practices for Producing Films of Uniform Thickness
5.1 Conduct all drying tests in a well-ventilated room or
of Paint, Varnish, and Related Products on Test Panels
chamber, free from direct drafts, dust, products of combustion,
D 1005 Test Methods for Measurement of Dry-Film Thick-
laboratory fumes and under diffused light (see 5.4). Make all
ness of Organic Coatings Using Micrometers
measurements at a temperature of 23 6 2°C and 50 6 5%
relative humidity with the coated panels in a horizontal
3. Significance and Use
position while drying.
3.1 These test methods are used to determine the various
5.2 Tests should be carried out at practical viscosities at
stages and rates of drying, curing, and film formation of
which films can be applied to the proper film thickness with
organic coatings for the purpose of comparing types of
resultant good flow and leveling properties. In the absence of
coatings or ingredient changes, or both. This is significant in
any specific material specification, instructions for preparation
the development of organic coatings for various end uses and
of the film should be determined and agreed upon between the
also for production quality control.
purchaser and the seller.
5.3 Films to be tested should have practical thicknesses
4. Coatings and Recommended Film Thicknesses
commensurate with performance characteristics expected un-
4.1 Whenever tests are to be performed on coatings not
der actual usage for the type under test. All testing should be
listed inTable 1, there should be a prior agreement between the
done within an area, any point of which is not less than 15 mm
1
( ⁄2 in.) from the film edge.
1
These test methods are under the jurisdiction of ASTM Committee D01 on
5.4 Light Conditions—Illumination of the films during the
Paint and Related Coatings, Materials, and Applications and are the direct
entiredryingtestperiodfromnormallaboratoryorskysources,
responsibility of Subcommittee D01.23 on Physical Properties of Applied Paint
never from direct sunlight or other sources high in nonvisible
Film.
radiant energy.
Current edition approved Dec. 1, 2003. Published December 2003. Originally
approved in 1959. Last previous edition approved in 1995 as D 1640 – 95 (1999).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6. Preparation of Test Specimens
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.1 Carry out all tests as described in 6.1.1, 6.1.2 and 6.1.3,
Standards volume information, refer to the standard’s Document Summary page on
unless otherwise noted.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D1640–03
6.1.1 All test specimens shall be prepared and tested by one portionsaremadeupfromacontinuousmetalstr
...