ASTM D2454-14
(Practice)Standard Practice for Determining the Effect of Overbaking on Organic Coatings
Standard Practice for Determining the Effect of Overbaking on Organic Coatings
SIGNIFICANCE AND USE
5.1 Most coatings are designed for a specific baking time and temperature. For a variety of reasons (line stoppages, rerouting back through ovens, oven overheating, etc.) the prescribed time or temperature, or both, of the bake is often exceeded. This practice has been found to be useful in evaluating the effects of overbakes on coatings.
SCOPE
1.1 This practice covers the determination of the time-temperature effect of overbaking on the physical and chemical properties of organic coatings.
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 whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 7.
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Designation: D2454 − 14
Standard Practice for
1
Determining the Effect of Overbaking on Organic Coatings
This standard is issued under the fixed designation D2454; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Aluminum-Alloy Surfaces for Painting
D1731 Practices for Preparation of Hot-Dip Aluminum Sur-
1.1 This practice covers the determination of the time-
faces for Painting
temperature effect of overbaking on the physical and chemical
D2197 Test Method for Adhesion of Organic Coatings by
properties of organic coatings.
Scrape Adhesion
1.2 The values stated in SI units are to be regarded as
D2201 Practice for Preparation of Zinc-Coated and Zinc-
standard. No other units of measurement are included in this
Alloy-Coated Steel Panels for Testing Paint and Related
standard.
Coating Products
1.3 This standard does not purport to address all of the
D2244 Practice for Calculation of Color Tolerances and
safety concerns, if any, associated with its use. It is the Color Differences from Instrumentally Measured Color
responsibility of whoever uses this standard to consult and
Coordinates
establish appropriate safety and health practices and deter- D2794 Test Method for Resistance of Organic Coatings to
mine the applicability of regulatory limitations prior to use.
the Effects of Rapid Deformation (Impact)
Specific hazard statements are given in Section 7. D3359 Test Methods for Measuring Adhesion by Tape Test
D3363 Test Method for Film Hardness by Pencil Test
2. Referenced Documents
D6386 Practice for Preparation of Zinc (Hot-Dip Galva-
2
nized) Coated Iron and Steel Product and Hardware
2.1 ASTM Standards:
Surfaces for Painting
D522 Test Methods for Mandrel Bend Test of Attached
D7091 Practice for Nondestructive Measurement of Dry
Organic Coatings
Film Thickness of Nonmagnetic Coatings Applied to
D523 Test Method for Specular Gloss
Ferrous Metals and Nonmagnetic, Nonconductive Coat-
D609 Practice for Preparation of Cold-Rolled Steel Panels
ings Applied to Non-Ferrous Metals
for Testing Paint, Varnish, Conversion Coatings, and
D7396 Guide for Preparation of New, Continuous Zinc-
Related Coating Products
Coated (Galvanized) Steel Surfaces for Painting
D823 Practices for Producing Films of Uniform Thickness
E805 Practice for Identification of Instrumental Methods of
of Paint, Varnish, and Related Products on Test Panels
Color or Color-Difference Measurement of Materials
D1005 Test Method for Measurement of Dry-Film Thick-
ness of Organic Coatings Using Micrometers
3. Terminology
D1308 Test Method for Effect of Household Chemicals on
3.1 Definitions:
Clear and Pigmented Organic Finishes
D1640 Test Methods for Drying, Curing, or Film Formation 3.1.1 overbaking, n—an exposure of the coating to a mod-
erately higher temperature or to a longer period of baking, or
of Organic Coatings at Room Temperature
D1729 Practice for Visual Appraisal of Colors and Color both,thanrecommendedbythemanufacturerofthecoatingfor
normal curing.
Differences of Diffusely-Illuminated Opaque Materials
D1730 Practices for Preparation of Aluminum and 3.1.1.1 Discussion—This condition is in contrast to “heat
resistance” which is a parameter relating to the service life of
a coating.
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
4. Summary of Practice
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.27 on Accelerated Testing.
4.1 Four panels are prepared and baked at the schedule
Current edition approved Feb. 1, 2014. Published March 2014. Originally
normally recommended for the coating. Two of the panels are
approved in 1966. Last previous edition approved in 2008 as D2454 – 08. DOI:
10.1520/D2454-14.
then removed and the remaining two are subjected to an
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
additional overbake in which the time and temperature are
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
mutually agreed upon between the purchaser and the seller.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. The sets of panels, after a suitable conditioning interval, are
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2454 − 14
then evaluated for the properties that are compatible with the drawdown method with wire-wound draw bars may be used
substrate. Amon
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2454 − 08 D2454 − 14
Standard Practice for
1
Determining the Effect of Overbaking on Organic Coatings
This standard is issued under the fixed designation D2454; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This practice covers the determination of the time-temperature effect of overbaking on the physical and chemical properties
of organic coatings.
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 whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of
regulatory limitations prior to use. Specific hazard statements are given in Section 7.
2. Referenced Documents
2
2.1 ASTM Standards:
D522 Test Methods for Mandrel Bend Test of Attached Organic Coatings
D523 Test Method for Specular Gloss
D609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating
Products
D823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
D1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D1308 Test Method for Effect of Household Chemicals on Clear and Pigmented Organic Finishes
D1400 Test Method for Nondestructive Measurement of Dry Film Thickness of Nonconductive Coatings Applied to a
3
Nonferrous Metal Base (Withdrawn 2006)
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
D1730 Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
D1731 Practices for Preparation of Hot-Dip Aluminum Surfaces for Painting
3
D2092 Guide for Preparation of Zinc-Coated (Galvanized) Steel Surfaces for Painting (Withdrawn 2008)
D2197 Test Method for Adhesion of Organic Coatings by Scrape Adhesion
D2201 Practice for Preparation of Zinc-Coated and Zinc-Alloy-Coated Steel Panels for Testing Paint and Related Coating
Products
D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
D2794 Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)
D3359 Test Methods for Measuring Adhesion by Tape Test
D3363 Test Method for Film Hardness by Pencil Test
D6386 Practice for Preparation of Zinc (Hot-Dip Galvanized) Coated Iron and Steel Product and Hardware Surfaces for Painting
D7091 Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals
and Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous Metals
D7396 Guide for Preparation of New, Continuous Zinc-Coated (Galvanized) Steel Surfaces for Painting
E805 Practice for Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials
3. Terminology
3.1 Definitions:
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.27 on Accelerated Testing.
Current edition approved June 1, 2008Feb. 1, 2014. Published July 2008March 2014. Originally approved in 1966. Last previous edition approved in 20022008 as
D2454 – 95 (2002).D2454 – 08. DOI: 10.1520/D2454-08.10.1520/D2454-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2454 − 14
3.1.1 overbaking, n—an exposure of the coating to a moderately higher temperature or to a longer period of baking, or both,
than recommended by the manufacturer of the coating for normal curing.
3.1.1.1 Discussion—
This condition i
...
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