ASTM D4417-21
(Test Method)Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
SIGNIFICANCE AND USE
5.1 The height of surface profile has been shown to be a factor in the performance of various coatings applied to steel. For this reason, surface profile should be measured prior to coating application to ensure conformance of a prepared surface to profile requirements specified by the manufacturer of a protective coating or the coating job specification.
Note 2: The peak count/peak density has been shown to be a factor in the performance of various coatings applied to steel. According to research performed by Roper, Weaver and Brandon6, an increase in peak count can improve the adhesion of some coatings to the prepared steel, as well as provide greater resistance to corrosion undercutting once the coating becomes damaged in service.
Note 3: Optical microscope methods serve as a referee method for surface profile measurement methods A and B. Profile depth designations are based on the concept of mean maximum profile (h max); this value is determined by averaging a given number (usually 20) of the highest peak to lowest valley measurements made in the field of view of a standard measuring microscope. This is done because of evidence that coating performance in any one small area is primarily influenced by the highest surface features in that area and not by the average roughness.7
SCOPE
1.1 These test methods cover the description of techniques for measuring the profile of abrasive blast cleaned surfaces in the field, shop, and laboratory. There are other techniques suitable for laboratory use not covered by these test methods.
1.2 Method B may also be appropriate to the measurement of profile produced by using power tools.
Note 1: The Method B procedure in this standard was developed for use on flat surfaces. Depending on the radius of the surface, the results could have greater variability with lower values and averages.
1.3 SSPC standard SSPC-PA 17 provides additional guidance for determining conformance with surface profile requirements.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D4417 −21
Standard Test Methods for
Field Measurement of Surface Profile of Blast Cleaned
1
Steel
This standard is issued under the fixed designation D4417; 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.
1. Scope 2. Referenced Documents
2
1.1 These test methods cover the description of techniques
2.1 ASTM Standards:
for measuring the profile of abrasive blast cleaned surfaces in
D7127 Test Method for Measurement of Surface Roughness
the field, shop, and laboratory. There are other techniques
of Abrasive Blast Cleaned Metal Surfaces Using a Por-
suitable for laboratory use not covered by these test methods.
table Stylus Instrument
E177 Practice for Use of the Terms Precision and Bias in
1.2 Method B may also be appropriate to the measurement
ASTM Test Methods
of profile produced by using power tools.
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
NOTE 1—The Method B procedure in this standard was developed for
use on flat surfaces. Depending on the radius of the surface, the results
3
2.2 SSPC Standard:
could have greater variability with lower values and averages.
SSPC-PA 17 Procedure for Determining Conformance to
1.3 SSPC standard SSPC-PA 17 provides additional guid-
Steel Profile/Surface Roughness/Peak Count Require-
ance for determining conformance with surface profile require-
ments
ments.
4
2.3 ASME Standard:
1.4 The values stated in SI units are to be regarded as the
ASME B46.1-2002 Surface Texture, Surface Roughness
standard. The values given in parentheses are for information
Waviness and Lay
only.
5
2.4 ISO Standards:
1.5 This standard does not purport to address all of the
ISO 4287: 1997 Geometrical Product Specifications
safety concerns, if any, associated with its use. It is the
(GPS)—Surface Texture: Profile Method—Terms,
responsibility of the user of this standard to establish appro-
Definitions, and Surface Parameters
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
3. Terminology
1.6 This international standard was developed in accor-
3.1 Definitions of Terms Specific to This Standard:
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mendations issued by the World Trade Organization Technical
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Barriers to Trade (TBT) Committee.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from Society for Protective Coatings (SSPC), 800 Trumbull Dr.,
Pittsburgh, PA 15205, http://www.sspc.org.
1 4
These test methods are under the jurisdiction of ASTM Committee D01 on Available from American Society of Mechanical Engineers (ASME), ASME
Paint and Related Coatings, Materials, and Applications and are the direct International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
responsibility of Subcommittee D01.46 on Industrial Protective Coatings. www.asme.org.
5
Current edition approved Jan. 1, 2021. Published January 2021. Originally Available from International Organization for Standardization (ISO), ISO
approved in 1984. Last previous edition approved in 2020 as D4417 – 20A. DOI: Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
10.1520/D4417-21. Geneva, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D4417−21
3.1.1 deadband, n—that distance above and below the mean 5. Significance and Use
line that a continuous stylus trace line must cross in both
5.1 The height of surface profile has been shown to be a
directions (up and down) to count as a single peak.
factor in the performance of various coatings applied to steel.
3.1.2 evaluation length, n—a sequence of five consecutive For this reason, surface profile should be measured prior to
stylus sampling lengths. coating application to ensure conformance of a prepared
surfacetoprofilerequirementsspecifiedbythemanufacturerof
3.1.3 H, n—the average of the maximum peak
...
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: D4417 − 20a D4417 − 21
Standard Test Methods for
Field Measurement of Surface Profile of Blast Cleaned
1
Steel
This standard is issued under the fixed designation D4417; 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.
1. Scope
1.1 These test methods cover the description of techniques for measuring the profile of abrasive blast cleaned surfaces in the field,
shop, and laboratory. There are other techniques suitable for laboratory use not covered by these test methods.
1.2 Method B may also be appropriate to the measurement of profile produced by using power tools.
NOTE 1—The Method B procedure in this standard was developed for use on flat surfaces. Depending on the radius of the surface, the results could have
greater variability with lower values and averages.
1.3 SSPC standard SSPC-PA 17 provides additional guidance for determining conformance with surface profile requirements.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D7127 Test Method for Measurement of Surface Roughness of Abrasive Blast Cleaned Metal Surfaces Using a Portable Stylus
Instrument
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3
2.2 SSPC Standard:
SSPC-PA 17 Procedure for Determining Conformance to Steel Profile/Surface Roughness/Peak Count Requirements
1
These test methods are under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and are the direct responsibility of
Subcommittee D01.46 on Industrial Protective Coatings.
Current edition approved Dec. 1, 2020Jan. 1, 2021. Published December 2020January 2021. Originally approved in 1984. Last previous edition approved in 2020 as
D4417 – 20.D4417 – 20A. DOI: 10.1520/D4417-20A.10.1520/D4417-21.
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.
3
Available from Society for Protective Coatings (SSPC), 800 Trumbull Dr., Pittsburgh, PA 15205, http://www.sspc.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D4417 − 21
4
2.3 ASME Standard:
ASME B46.1-2002 Surface Texture, Surface Roughness Waviness and Lay
5
2.4 ISO Standards:
ISO 4287: 1997 Geometrical Product Specifications (GPS)—Surface Texture: Profile Method—Terms, Definitions, and Surface
Parameters
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 deadband, n—that distance above and below the mean line that a continuous stylus trace line must cross in both directions
(up and down) to count as a single peak.
3.1.2 evaluation length, n—a sequence of five consecutive stylus sampling lengths.
3.1.3 H, n—the average of the maximum peak-to-valley height distances obtained by measuring the thickness of replica tape.
3.1.3.1 Discussion—
H is the thickness measurement adjusted for tape non-linearity.
L
3.1.4 Pd (peak density), n—the number of peaks per unit area obtained from burnished replica tape.
3.1.5 peak, n—a high point in a surface profile.
3.1.6 Rpc (peak count), n—the number of peak/valley pairs, per unit of length, extending outside a “deadband” centered on the
mean line of a stylus trace.
3.1.6.1 Discussion—
For
...
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