What is salt spray test machine?

Salt spray testing is a laboratory simulation of a corrosive saline environment. It is used as an accelerated means of testing the ability of surface coatings to withstand atmospheric corrosion. Then the front of the panel is “scribed” with a sharp tool to produce a scratch through the coating to the metal substrate.

How does a salt spray chamber work?

All reservoirs incorporate a transparent graduated sight glass for ease of monitoring the solution level inside. During salt spray testing, the salt solution (brine) is drawn from this reservoir by the chamber peristaltic pump, via a primary filter unit which removes any large undissolved salt crystals or other debris.

Is standard for salt spray?

ASTM B117 salt fog or salt spray test is a very popular corrosion test designed to provide corrosion resistance information on metals and coated metals. The ASTM B117 test standard has also been approved for use by Department of Defense agencies.

What is salt spray corrosion test?

A salt spray test is a corrosion testing method that uses high-saline environments to measure the corrosion resistance of products, paints and coatings over extended periods.

How long does the salt spray test take?

Test Cycle: ASTM B117 is a continuous spray (fog) test. Test Duration: Tests can range from <24 hours to thousands of hours depending upon the material being tested.

Why salt spray test is required?

Salt spray testing is a method of checking the corrosion resistance of coatings and materials used to manufacture products such as fasteners. During salt spray testing, an accelerated corrosive attack is produced in order to better predict how well the coating protects the metal.

How long is a salt spray test?

The tests typically last from 8 to 3,000 hours and employ a 5\% sodium chloride solution with a pH between 6.5 and 7.2. There are a variety of other corrosion tests, but the salt spray test is very standard, even though there is some disagreement about how closely it recreates real life conditions.

How long does a salt spray test take?

How long is corrosion testing?

As the spray is continuous, the samples are constantly wet, and therefore, constantly subject to corrosion. Performance is rated by recording the number hours to reach defined levels of surface rusting. Test duration ranges from 24 hours to 1000 hours or more.