Standard Test Method for Calibration of Atmospheric Corrosion Test Chambers by Change in Mass of Copper Coupons

Importancia y uso:

4.1 Electrical devices that contain electrical contacts generally contain some copper-based materials. Atmospheric corrosion of copper parts in such devices often occurs in service environments. A quantitative measure of the effect of a laboratory corrosion test on copper permits assessment of the severity of the test. In addition, corrosion tests may be defined in terms of their effect on copper; this test method provides a way of comparing one test against a standard defined elsewhere, or allows a comparison of the performance of a test over a period of time. Although this test method provides for a relatively simple check of a test, the user is advised that additional analysis of the test chamber ambient is generally required to reproduce test conditions.

4.2 Atmospheric corrosion tests are used on a variety of materials besides copper. Care should be exercised in drawing conclusions about the effects on such materials of apparently equivalent tests if the composition of gases or experimental conditions are different. The primary use of this calibration test method is to assure correlation among nominally identical tests.

Subcomité:

B02.05

Referida por:

B0827-05R20, B0808-10R20, B0845-97R24, B0825-19, B0826-09R20

Volúmen:

02.04

Número ICS:

77.060 (Corrosion of metals)

Palabras clave:

accelerated testing; atmospheric corrosion; cleaning technique; contacts; copper; electrical contacts; mass change; mixed flowing gas testing; test calibration; weight gain;