ASTM D7447-08

Standard Practice for Symbolizing Adhesive Applications

SIGNIFICANCE AND USE
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.
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.
FIG. 1 Standard Locations of Elements of the Adhesive Symbol
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: 30-Sep-2008
• ICS: 83.180 - Adhesives
• Technical Committee: D14 - Adhesives
• Drafting Committee: D14.60 - Adhesive Material Classification System

Relations

• Replaced By: ASTM D7447-08e1 - Standard Practice for Symbolizing Adhesive Applications
• Effective Date: 01-Oct-2008

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 7447 – 08
Standard Practice for
Symbolizing Adhesive Applications
This standard is issued under the fixed designation D 7447; 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 optionaltail(shownatleftinFig.1)providesaplacetoinclude
additional information about the adhesive that is not referenced
1.1 This practice covers a standard symbol that may be used
in other notations.
bythedesign-engineeringcommunityonengineeringdrawings
3.2 Refer to Fig. 1 for an overview schematic of the
to indicate a bonded assembly for any type of adhesive.
adhesivesymboldenotedbyamastsupportingacircle with the
1.2 This design is based on criteria contained inANSI/AWS
letter “A” inside for adhesive. Detail behind each of the
A2.4 as well as ISO 15785.
elements noted (for example, FORM, CHEM, APPL METH)
1.3 The values given in SI units are to be regarded as the
can be found in corresponding tables in Section 5.
standard. The values in parentheses are for information only.
1.4 This standard does not purport to address all of the
4. Elements of the Adhesive Symbol
safety concerns, if any, associated with its use. It is the
4.1 The elements represented in Fig. 1 are explained in
responsibility of the user of this standard to establish appro-
greater detail in Tables 1-5 and Fig. 2.
priate safety and health practices and determine the applica-
4.2 Fig. 3 illustrates an expanded view of the parameters
bility of regulatory limitations prior to use.
detailed in the tables described in Tables 1-5 and Fig. 2.
2. Referenced Documents
5. References and Other Notations
2.1 ANSI/AWS Standard:
5.1 Symbols With References—When specifications, pro-
ANSI/AWS A2.4 Symbols for Welding and Nondestructive
cesses, or other references are used with the adhesive symbol,
Testing
the notation is placed in the tail (see “T” symbol in Fig. 1 or
2.2 ISO Standard:
Fig.3).Thisnotationmayreflectinformationaboutaparticular
ISO 15785 Technical Drawings—Symbolic Presentation
manufacturer’s product or other pertinent data not contained in
and Indication of Adhesive, Fold and Pressed Joints
the symbol elements.
3. Significance and Use 5.2 Symbols Without References—Symbols may be used
without specifications, processes, or other references when:
3.1 An adhesive symbol provides an efficient means of
5.2.1 A note appears on the drawing: “Unless otherwise
placing complete information about adhesives on engineering
designated, all adhesive bonds are to be made in accordance
drawings. The joint is the basis of reference for the symbol to
with Specification No .”
which the arrow line is pointed. The reference line of the
5.2.2 The bonding procedure to be used is described else-
symbol is used to designate the type of adhesive to be used,
where such as in shop instructions and process sheets: “Refer
including information about its physical form, chemical tech-
to Instruction for bonding procedure.”
nology family, requirements for surface preparation, applica-
5.3 OrientationofBondJoint—Thehorizontalorientationis
tion method (bead versus roll coat), and cure method. The
default (“parallel line” element should be omitted) or the
element is present only when either inclined or vertical:
5.3.1 If vertical orientation, display lines as “| |” or
This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
and is the direct responsibility of Subcommittee D14.60 on Adhesive Material
5.3.2 If inclined orientation, display lines as “//.”
Classification System.
5.4 Symbol Attachments to the Reference Line:
Current edition approved Oct. 1, 2008. Published November 2008.
2 5.4.1 Geometry of cross section of the dispensed bead style
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. [BEAD X-SECT] and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D7447–08
FIG. 1 Standard Locations of Elements of the Adhesive Symbol
TABLE 1 FORM TABLE 3 SURF PREP
(Adhesive Physical Forms) (Surface Preparation)
A
One-Part System 1C a. DETERGENT CLEANING (insert type)
B
Two-Part System 2C b. SOLVENT WIPE (insert type)
C
Film FIL a. CHEMICAL TREATMENT (insert type)
D
Foam FOA c. MECHANICAL TREATMENT (insert type)
Other (specify) Note (SAND grit size) or
(GRIT shot size) as needed
A
Detergent Cleaning types may include but are not limited to: (1) detergent; (2)
soap; (3) caustic soda.
TABLE 2 TECH
B
Solvent Wipe types may include but are not limited to: (1) acetone; (2)
(Technology Families)
isopropyl alcohol.
C
Acrylic (other than AN, CA) AC
Chemical Treatment types may include but are not limited to: (1) corona; (2)
Anaerobic AN
flame; (3) plasma; (4) chemic
...