ASTM G82 PDF

A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Scope 1. Sugges- tions for avoiding known pitfalls are included. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use. Referenced Documents 2.

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A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Scope 1. Sugges- tions for avoiding known pitfalls are included. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.

Referenced Documents 2. Terminology 3. Current edition approved Sept. Published January Originally published as G Last previous edition G 82—83 This type of accelerated corrosion is referred to as galvanic corrosion.

Because galvanic corrosion can occur at a high rate, it is important that a means be available to alert the user of products or equipment that involve the use of dissimilar metal combinations in an electrolyte of the possible effects of galvanic corrosion. The metal that will suffer increased corrosion in a galvanic couple in that environment can then be predicted from the relative position of the two metals in the series. The potentials themselves versus an appropriate reference half-cell are listed so that the potential difference between metals in the series can be determined.

This type of Galvanic Series has been put in graphical form as a series of bars displaying the range of potentials exhibited by the metal listed opposite each bar. Such a series is illustrated in Fig. Thus, only the relative position of materials in the series is known and not the magnitude of their potential difference.

Such a series is shown in Fig. All other factors being equal, and subject to the precautions in Section 5, this increased driving force frequently, although not always, results in a greater degree of galvanic corrosion.

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ASTM_G82.pdf

Ketaur Due to modifications in the electrolyte, inversions may occur in the potential series. Link to Active This link will always route to the current Active version of the standard. No other units of measurement are included in this standard. This standard is also available to be included in Standards Subscriptions. Based on our research, SGH developed a reference chart summarizing the results and providing guidance to our staff designing and investigating building materials and assemblies.

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ASTM_G82 Corrosion Galvanica.pdf

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