ASTM D7447-08(2014)

Standard Practice for Symbolizing Adhesive Applications

SIGNIFICANCE AND USE
3.1 An adhesive symbol provides an efficient means of placing complete information about adhesives on engineering drawings. The joint is the basis of reference for the symbol to which the arrow line is pointed. The reference line of the symbol is used to designate the type of adhesive to be used, including information about its physical form, chemical technology family, requirements for surface preparation, application method (bead versus roll coat), and cure method. The optional tail (shown at left in Fig. 1) provides a place to include additional information about the adhesive that is not referenced in other notations.  
3.2 Refer to Fig. 1 for an overview schematic of the adhesive symbol denoted by a mast supporting a circle with the letter “A” inside for adhesive. Detail behind each of the elements noted (for example, FORM, CHEM, APPL METH) can be found in corresponding tables in Section 5.
SCOPE
1.1 This practice covers a standard symbol that may be used by the design-engineering community on engineering drawings to indicate a bonded assembly for any type of adhesive.  
1.2 This design is based on criteria contained in ANSI/AWS A2.4 as well as ISO 15785.  
1.3 The values given in SI units are to be regarded as the standard. The values 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: 28-Feb-2014
• ICS: 83.180 - Adhesives
• Technical Committee: D14 - Adhesives
• Drafting Committee: D14.60 - Adhesive Material Classification System

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D7447 − 08 (Reapproved 2014)
Standard Practice for
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Symbolizing Adhesive Applications
This standard is issued under the fixed designation D7447; 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 3.2 Refer to Fig. 1 for an overview schematic of the
adhesivesymboldenotedbyamastsupportingacirclewiththe
1.1 This practice covers a standard symbol that may be used
letter “A” inside for adhesive. Detail behind each of the
bythedesign-engineeringcommunityonengineeringdrawings
elements noted (for example, FORM, CHEM, APPL METH)
to indicate a bonded assembly for any type of adhesive.
can be found in corresponding tables in Section 5.
1.2 This design is based on criteria contained inANSI/AWS
A2.4 as well as ISO 15785.
4. Elements of the Adhesive Symbol
1.3 The values given in SI units are to be regarded as the
4.1 The elements represented in Fig. 1 are explained in
standard. The values in parentheses are for information only.
greater detail in Tables 1-5 and Fig. 2.
1.4 This standard does not purport to address all of the
4.2 Fig. 3 illustrates an expanded view of the parameters
safety concerns, if any, associated with its use. It is the
detailed in the tables described in Tables 1-5 and Fig. 2.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. References and Other Notations
bility of regulatory limitations prior to use.
5.1 Symbols With References—When specifications,
2. Referenced Documents processes, or other references are used with the adhesive
symbol, the notation is placed in the tail (see “T” symbol in
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2.1 ANSI/AWS Standard:
Fig. 1 or Fig. 3). This notation may reflect information about a
ANSI/AWS A2.4 Symbols for Welding and Nondestructive
particular manufacturer’s product or other pertinent data not
Testing
contained in the symbol elements.
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2.2 ISO Standard:
5.2 Symbols Without References—Symbols may be used
ISO15785 TechnicalDrawings—SymbolicPresentationand
without specifications, processes, or other references when:
Indication of Adhesive, Fold and Pressed Joints
5.2.1 A note appears on the drawing: “Unless otherwise
designated, all adhesive bonds are to be made in accordance
3. Significance and Use
with Specification No .”
3.1 An adhesive symbol provides an efficient means of
5.2.2 The bonding procedure to be used is described else-
placing complete information about adhesives on engineering
where such as in shop instructions and process sheets: “Refer
drawings. The joint is the basis of reference for the symbol to
to Instruction for bonding procedure.”
which the arrow line is pointed. The reference line of the
5.3 OrientationofBondJoint—The horizontal orientation is
symbol is used to designate the type of adhesive to be used,
default (“parallel line” element should be omitted) or the
including information about its physical form, chemical tech-
element is present only when either inclined or vertical:
nology family, requirements for surface preparation, applica-
5.3.1 If vertical orientation, display lines as “| |” or
tion method (bead versus roll coat), and cure method. The
5.3.2 If inclined orientation, display lines as “//.”
optionaltail(shownatleftinFig.1)providesaplacetoinclude
additional information about the adhesive that is not referenced
5.4 Symbol Attachments to the Reference Line:
in other notations.
5.4.1 Geometry of cross section of the dispensed bead style
[BEAD X-SECT] and
5.4.2 An arrow-shaped element indicating surface applica-
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This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
tion of the adhesive [APP SURF] that may be shown posi-
and is the direct responsibility of Subcommittee D14.60 on Adhesive Material
tioned as:
Classification System.
Current edition approved March 1, 2014. Published March 2014. Originally
5.4.2.1 Above line only—If adhesive is to applied to sub-
ε1
approved in 2008. Last previous edition approved in 2008 as D7447 – 08 . DOI:
strate surface to which arrow is pointing,
10.1520/D7447-08R14.
2
5.4.2.2 Below line only—If adhesive is to be applied to
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. substrate surface opposite to which arrow is pointing, and
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D7447 − 08 (2014)
FIG. 1 Standard Locations of Elements of the Adhesive Symbol
TABLE 1 FORM TABLE 3 SURF PREP
(Adhesive Ph
...