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, tanso, and tin coatings.
ASTM B555-86-2018 Standard Guide for Measuring the Thickness of Electrodeposited Metal Coatings by Drop Tests

Kahulugan at paggamit

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

Hakbang 1: Saklaw

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

Tala 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 Ang pamantayang ito ay hindi nilayon upang matugunan ang lahat ng mga alalahanin sa kaligtasan, kung meron man, na nauugnay sa paggamit nito. Responsibilidad ng mga gumagamit ng pamantayang ito na magtatag ng angkop na kaligtasan, mga kasanayan sa kalusugan at kapaligiran at upang matukoy ang pagiging angkop ng mga paghihigpit sa regulasyon bago gamitin.

1.3 Ang internasyonal na pamantayang ito ay batay sa mga internasyonal na kinikilalang pamantayan na mga prinsipyo na itinatag sa “Desisyon sa Mga Prinsipyo para sa Pag unlad ng Internasyonal na Pamantayan, Mga Patnubay at Rekomendasyon” issued by the WTO Committee on Technical Barriers to Trade (TBT) Komite.