How do you do a salt spray test?
Salt spray tests are conducted in a closed testing chamber. A salt water solution is applied to a sample via a spray nozzle. This dense salt water fog is used to imitate a corrosive experiment. After a period of time, which is dependent on the corrosion resistance of a product, the appearance of oxides is evaluated.
Which material is used for salt spray testing?
Usually, the materials to be tested are metallic (although stone, ceramics, and polymers may also be tested) and finished with a surface coating which is intended to provide a degree of corrosion protection to the underlying metal.
How do you make a salt spray solution?
Take about a 50-mL sample of the salt solution as prepared at room temperature, boil gently for 30 s, cool, and determine the pH. When the pH of the salt solution is adjusted to 6.5 to 7.2 by this procedure, the pH of the atomized and collected solution at 35°C (95°F) will come within this range.
How long does a 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. Additional Information: Touchstone has tested both coupons and entire components for automotive, aerospace, and other industries.
What is a 1000 hour salt spray test?
A Salt Spray Test (aka Salt Fog test) is a standardized test method used to test the durability of protective coatings. So, for example, a ruspert coating that lasts for 1,000 hours in a severe environment is more durable than a black oxide coating that only lasts for 24 to 96 hours.
What is is standard for salt spray test?
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 a 1000 hour Salt Spray Test?
What is ASTM B117 Salt Spray Test?
ASTM B117 is a salt spray test used to produce relative corrosion resistance information for specimens of metals and coated metals exposed in a standardized corrosive environment. Micom offers ASTM B117 accelerated corrosion testing as part of its surface finish and accelerated aging testing services.
Is code for salt spray test?
ISO 9227 uses a Salt Spray fog as a technique to assess a coated sample’s resistance to corrosion. By producing an attack to coated specimens, it is possible to determine if the protecting coating is suitable.
What is ASTM B117?