The ASTM B555 Standard Guide for Measuring the Thickness of Electrodeposited Metal Coatings by Drop tests covers the use of drop tests to measure the thickness of electrodeposited zinc, cadmium, copper, and tin coatings.
ASTM B555-86-2018 Standard Guide for Measuring the Thickness of Electrodeposited Metal Coatings by Drop Tests

Meaning and use

4.1 The thickness of the metal coating is usually important to its performance.

4.2 This procedure can be used for approximate determination when good accuracy is not required. For more reliable determination, the following methods can be used: Test methods B487, B499, B504 and B568.

4.3 This test assumes that the dissolution rate of the coating is always the same under specified conditions.

ASTM B555-86-2018 Standard Guide for Measuring the Thickness of Electrodeposited Metal Coatings by Drop Tests

Step 1: Scope

1.1 This guide covers the use of drop testing to measure the thickness of electrodeposited zinc, cadmium, copper and tin coatings.

Note 1: In most cases, this method of measuring coating thickness is not as reliable or convenient as using a suitable coating thickness meter (see test methods B499, B504 and B568).

1.2 This standard is not intended to address all safety concerns, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.

1.3 This international standard is based on internationally recognized standardization principles established in the “Decision on Principles for the Development of International Standards, Guidelines and Recommendations” issued by the WTO Committee on Technical Barriers to Trade (TBT) Committee.