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ASTM D4417-21
Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
Přeložit název
NORMA vydána dne 1.1.2021
Informace o normě:
Označení normy: ASTM D4417-21
Datum vydání normy: 1.1.2021
Kód zboží: NS-1029171
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D4417-21 :
Keywords:
abrasive, abrasive blast cleaning, anchor pattern, peak count, peak density, peak height, surface profile, surface roughness,, ICS Number Code 17.040.20 (Properties of surfaces),77.140.01 (Iron and steel products in general)
Doplňující informace
| Significance and Use | ||||||||
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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
BrandonNote 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
(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. |
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| 2. Referenced Documents | ||||||||
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