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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.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ISO StandardISO 15785 Technical Drawings--Symbolic Presentation and Indication of Adhesive, Fold and Pressed Joints
ICS Number Code 83.180 (Adhesives)
UNSPSC Code 31201601(Chemical adhesives)
ASTM D7447-08(2014), Standard Practice for Symbolizing Adhesive Applications, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top