ASTM D7393-16(2020)
(Practice)Standard Practice for Indicating Oil in Abrasives
Standard Practice for Indicating Oil in Abrasives
SIGNIFICANCE AND USE
4.1 Oil in abrasives can be transferred to the surface being cleaned, thus contaminating it. This can cause film defects, affect adhesion of the coating applied over it, and the ultimate performance of the coating system.
4.2 Oil in abrasives is one of the cleanliness tests required for mineral and slag abrasives in SSPC-AB 1, for recycled ferrous abrasives in SSPC-AB 2, for new ferrous abrasives in SSPC-AB 3, and for recyclable encapsulated abrasive media in SSPC-AB 4.
4.3 Other contaminants in abrasive such as chemical contaminants or particulate matter require other methods for detection such as Test Method D4940 for conductive-potential, ionic contaminants. Because Test Method D4940 specifies a different ratio of abrasive to water and requires the use of higher purity water, the solution resulting from the evaluation of the oil in abrasive shall not be used for the evaluation in accordance with Test Method D4940.
SCOPE
1.1 This practice is used to determine the presence of oil in abrasives used for abrasive blast cleaning.
1.2 The procedure can be used in the laboratory, field, blast and paint shop or steel fabrication shop.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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
Relations
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: D7393 − 16 (Reapproved 2020)
Standard Practice for
Indicating Oil in Abrasives
This standard is issued under the fixed designation D7393; 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 3. Summary of Practice
1.1 This practice is used to determine the presence of oil in 3.1 A sample of the abrasive is placed in a container,
abrasives used for abrasive blast cleaning.
covered with water and vigorously shaken. The presence of an
oil sheen or oil drops on the surface is cause for rejection of the
1.2 The procedure can be used in the laboratory, field, blast
supply of abrasive being tested.
and paint shop or steel fabrication shop.
1.3 The values stated in SI units are to be regarded as the
4. Significance and Use
standard. The values given in parentheses are for information
4.1 Oil in abrasives can be transferred to the surface being
only.
cleaned, thus contaminating it. This can cause film defects,
1.4 This standard does not purport to address all of the
affect adhesion of the coating applied over it, and the ultimate
safety concerns, if any, associated with its use. It is the
performance of the coating system.
responsibility of the user of this standard to establish appro-
4.2 Oil in abrasives is one of the cleanliness tests required
priate safety, health, and environmental practices and deter-
for mineral and slag abrasives in SSPC-AB 1, for recycled
mine the applicability of regulatory limitations prior to use.
ferrous abrasives in SSPC-AB 2, for new ferrous abrasives in
1.5 This international standard was developed in accor-
SSPC-AB 3, and for recyclable encapsulated abrasive media in
dance with internationally recognized principles on standard-
SSPC-AB 4.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4.3 Other contaminants in abrasive such as chemical con-
mendations issued by the World Trade Organization Technical
taminants or particulate matter require other methods for
Barriers to Trade (TBT) Committee.
detection such as Test Method D4940 for conductive-potential,
ionic contaminants. Because Test Method D4940 specifies a
2. Referenced Documents
different ratio of abrasive to water and requires the use of
higher purity water, the solution resulting from the evaluation
2.1 ASTM Standards:
of the oil in abrasive shall not be used for the evaluation in
D4940 Test Method for Conductimetric Analysis of Water
accordance with Test Method D4940.
Soluble Ionic Contamination of Blast Cleaning Abrasives
2.2 SSPC Standards:
5. Apparatus and Materials
SSPC-AB 1 Mineral and Slag Abrasives
5.1 Container—Clear jar or bottle capable of holding 250
SSPC-AB 2 Cleanliness of Recycled Ferrous MetallicAbra-
ml (8.5 fl oz) or more and with a lid that is capable of sealing
sive
the contents.
SSPC-AB 3 Ferrous Metallic Abrasive
SSPC-AB 4 Recyclable Encapsulated Abrasive Media
5.2 Water—Potable.
6. Procedure
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
6.1 Place a sample of the abrasive in a clean container t
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