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Significance and Use
5.1 Adhesives can be exposed to both electrical potential and humidity in many electrical and electronic applications. It is therefore desirable to provide a means of examining the corrosive tendencies of certain adhesives towards metals.
5.2 Although electrolytic corrosion is a direct result of ionic conduction in the adhesive, the nature of the exposed metals will have a bearing on both the severity of metal attack and the visibility of corrosion products. Because it gives a visual indication of corrosion and because of its widespread use in electrical circuits, copper is used in this practice. However, this would not preclude the use of other metals for specific interests.
5.3 This procedure is a subjective test in that determinations of the presence of corrosion is based on a visual inspection for a green discoloration or other evidence of corrosion.
1.1 This practice covers the determination of whether an adhesive has any corrosive effect on copper. It is ordinarily intended to distinguish materials that might cause corrosion in electrical and electronic equipment. This procedure is a subjective test for which precision and accuracy have not been established. It is not recommended for adhesives on backing.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
D907 Terminology of Adhesives
D996 Terminology of Packaging and Distribution Environments
E104 Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
G15 Terminology Relating to Corrosion and Corrosion Testing
ICS Number Code 83.180 (Adhesives)
UNSPSC Code 31201600(Other adhesives and sealants)
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ASTM D3482-07a(2014), Standard Practice for Determining Electrolytic Corrosion of Copper by Adhesives, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top