ABOUT ENVIRONMENTAL TEST CHAMBERS
What is an environmental test chamber?
Thermal Cycling vs Thermal Shock
Salt Spray Testing
Salt spray environmental test chambers are used to test the corrosive properties of products. Salt Spray test chambers are primarily used to test how well finishes, paints, and other products can last when exposed to a real world situation. By using a salt spray environmental test chamber, our customers can see years of corrosive exposure in a much shorter period of time.
Our salt spray test chambers hold the internal testing environment at a constant 95ºF and the salt and the spray is generated by using compressed air to create a pressure differential in the nozzle. This pressure differential sucks salt solution into the nozzle and as it passes through the nozzle, the spray that saturates the interior of the test chamber is created.
There are many standards that apply to salt spray testing and salt spray test chambers. The two major organization that have standards for salt spray testing are American Society for Testing and Materials (ASTM) and the United States Department of Defense (MIL-STD). By creating test standards, it allows for products entering those markets to be held to the same level of quality and end users know what level of scrutiny their product has passed through. Especially for products going to the Department of Defense, it allows the military to know how much field stress they can put on products without them failing.
Two of the more common standards for salt spray testing are ASTM-B117 and ISO 9227. Both specifications layout the apparatus, procedure, and conditions required to create and maintain the salt spray test environment. ISO 9227 applies specifically metals, alloys, and coatings, whereas ASTM-B117 does not have specific test specimen and is a broad spectrum standard.