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ASTM D3363-05(2011)e2

(Test Method)

Standard Test Method for Film Hardness by Pencil Test (Withdrawn 2020)

Standard Test Method for Film Hardness by Pencil Test (Withdrawn 2020)

SIGNIFICANCE AND USE
Pencil hardness measurements have been used by the coatings industry for many years to determine the hardness of clear and pigmented organic coating films. This test method has also been used to determine the cure of these coatings, especially when forced dried using heat.
This test method is especially useful in developmental work and in production control testing in a single laboratory. It should be recognized that the results obtained may vary between different laboratories when different pencils as well as panels are used. Every effort should be made to standardize the hardness of the lead used and the technique followed.
If this test method is used as a basis for purchase agreement, maximum precision will be achieved if a given set of referee pencils be agreed upon between the purchaser and the seller.
SCOPE
1.1 This test method covers a procedure for rapid, inexpensive determination of the film hardness of an organic coating on a substrate in terms of drawing leads or pencil leads of known hardness.
1.2 This test method is similar in content (but not technically equivalent) to ISO 15184.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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
31-May-2011
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.23 - Physical Properties of Applied Paint Films
Current Stage
Ref Project

Relations

Replaces
ASTM D3363-05(2011)e1 - Standard Test Method for Film Hardness by Pencil Test
Effective Date
01-Jun-2011
Referred By
ASTM D3451-06(2017) - Standard Guide for Testing Coating Powders and Powder Coatings
Effective Date
01-Jun-2011
Referred By
ASTM D1735-21 - Standard Practice for Testing Water Resistance of Coatings Using Water Fog Apparatus
Effective Date
01-Jun-2011
Referred By
ASTM D2247-15(2020) - Standard Practice for Testing Water Resistance of Coatings in 100 % Relative Humidity
Effective Date
01-Jun-2011
Referred By
ASTM F1178-11(2022) - Standard Specification for Performance of Enameling System, Baking, Metal Joiner Work and Furniture
Effective Date
01-Jun-2011
Referred By
ASTM D5498-12a(2018) - Standard Guide for Developing a Training Program for Personnel Performing Coating and Lining Work Inspection for Nuclear Facilities
Effective Date
01-Jun-2011
Referred By
ASTM D7270-07(2021) - Standard Guide for Environmental and Performance Verification of Factory-Applied Liquid Coatings
Effective Date
01-Jun-2011
Referred By
ASTM D870-15(2020) - Standard Practice for Testing Water Resistance of Coatings Using Water Immersion
Effective Date
01-Jun-2011
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
01-Jun-2011
Referred By
ASTM C1729M-21 - Standard Specification for Aluminum Jacketing for Insulation
Effective Date
01-Jun-2011
Referred By
ASTM D7187-20 - Standard Test Method for Measuring Mechanistic Aspects of Scratch/Mar Behavior of Paint Coatings by Nanoscratching
Effective Date
01-Jun-2011
Referred By
ASTM C1767-21 - Standard Specification for Stainless Steel Jacketing for Insulation
Effective Date
01-Jun-2011
Referred By
ASTM D3732-23 - Standard Practice for Reporting Cure Times of Ultraviolet-Cured Coatings
Effective Date
01-Jun-2011
Referred By
ASTM F2831-19 - Standard Practice for Internal Non Structural Epoxy Barrier Coating Material Used In Rehabilitation of Metallic Pressurized Piping Systems
Effective Date
01-Jun-2011
Referred By
ASTM C1423-21 - Standard Guide for Selecting Jacketing Materials for Thermal Insulation
Effective Date
01-Jun-2011

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ASTM D3363-05(2011)e2 - Standard Test Method for Film Hardness by Pencil Test (Withdrawn 2020)ASTM D3363-05(2011)e2 - Standard Test Method for Film Hardness by Pencil Test (Withdrawn 2020)
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ASTM D3363-05(2011)e2 - Standard Test Method for Film Hardness by Pencil Test (Withdrawn 2020)
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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
´2
Designation: D3363 − 05 (Reapproved 2011)
Standard Test Method for
Film Hardness by Pencil Test
This standard is issued under the fixed designation D3363; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
ε NOTE—Figure 1 was corrected editorially in August 2011.
ε NOTE—Figure 2 and Section 7 were corrected editorially in March 2012.
1. Scope* 4. Significance and Use
4.1 Pencil hardness measurements have been used by the
1.1 This test method covers a procedure for rapid, inexpen-
sive determination of the film hardness of an organic coating coatings industry for many years to determine the hardness of
clear and pigmented organic coating films. This test method
on a substrate in terms of drawing leads or pencil leads of
known hardness. has also been used to determine the cure of these coatings,
especially when forced dried using heat.
1.2 This test method is similar in content (but not techni-
4.2 This test method is especially useful in developmental
cally equivalent) to ISO 15184.
work and in production control testing in a single laboratory. It
1.3 The values stated in SI units are to be regarded as the
should be recognized that the results obtained may vary
standard. The values given in parentheses are for information
between different laboratories when different pencils as well as
only.
panels are used. Every effort should be made to standardize the
1.4 This standard does not purport to address all of the
hardness of the lead used and the technique followed.
safety concerns, if any, associated with its use. It is the
4.3 If this test method is used as a basis for purchase
responsibility of the user of this standard to establish appro-
agreement, maximum precision will be achieved if a given set
priate safety and health practices and determine the applica-
of referee pencils be agreed upon between the purchaser and
bility of regulatory limitations prior to use.
the seller.
2. Referenced Documents 5. Apparatus
5.1 A set of calibrated drawing leads (preferred) or equiva-
2.1 Other Standards:
lent calibrated wood pencils meeting the following scale of
ISO 15184 Determination of film hardness by pencil test.
hardness:
6B25B24B23B22B2B2HB2F2H22H23H24H25H26H
3. Summary of Test Method
Softer Harder
3.1 A coated panel is placed on a firm horizontal surface.
(1)
The pencil is held firmly against the film at a 45° angle (point
away from the operator) and pushed away from the operator in
The difference between two adjacent leads shall be consid-
a6.5-mm( ⁄4-in.)stroke.Theprocessisstartedwiththehardest
ered one unit of hardness.
pencil and continued down the scale of hardness to either of
5.2 Mechanical Lead Holder, for drawing leads if used.
two end points: one, the pencil that will not cut into or gouge
5.3 Mechanical Sharpener, draftsman-type, is helpful for
the film (pencil hardness), or two, the pencil that will not
trimming wood pencils if used.
scratch the film (scratch hardness).
5.4 Abrasive Paper, grit No. 400.
6. Test Specimens and Conditions
This test method is under the jurisdiction of ASTM Committee D01 on Paint
6.1 Apply the surface coating by appropriate means to a
and Related Coatings, Materials, andApplications and is the direct responsibility of
smooth rigid substrate and cure properly, or use representative
Subcommittee D01.23 on Physical Properties of Applied Paint Films.
Current edition approved June 1, 2011. Published June 2011. Originally
panels cut from coated stock. The panels used, the curing
approved in 1974. Last previous edition approved in 2005 as D3363 – 05. DOI:
conditions, and the age of the coating prior to the test shall be
10.1520/D3363-05R11E02.
within the limits agreed upon between the purchaser and the
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. seller.
*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
´2
D3363 − 05 (2011)
6.2 The film thickness of the coating shall be as specified or
as agreed upon between the purchaser and the seller.
6.3 Conduct the test at 23 6 2°C (73.5 6 3.5°F) and 50 6
5 % relative humidity.
7. Procedure
7.1 For wood pencils, remove approximately 5 to 6 mm ( ⁄16
to ⁄4 in.) of wood from the point of each pencil using a
draftsman-type mechanical sharpener, being careful to leave an
undisturbed, unmarked, smooth cylinder of lead. Holding the
pencil holder (when using drawing leads) at an angle of 90° to
the abrasive paper, rub the lead against the paper maintaining
an exact angle of 90° to the abrasive paper until a flat, smooth
and circular cross section is obtained, free of chips or nicks in
the edge of the cross section. For wood pencils, see Fig. 1 for
an illustration. For mechanical p
...

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SCOPE
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SCOPE
1.1 This test method covers a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such deformation.  
1.2 This test method should be restricted to testing in only one laboratory when numerical values are used because of the poor reproducibility of the method. Interlaboratory agreement is improved when ranking is used in place of numerical values.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 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.  
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