Salt spray test is a kind of environment test which adopts a salt spray chamber to simulate a salt fog conditions to evaluate the performance of corrosion resistance. The reference standards includes GB/T2423.17, IEC60068-2-11, ISO4628-3, ASTM B117, JIS-Z2371, JIS-G3141, GJB 150.1, MIL-STD-810F, MIL-STD-883E and etc.

Corrosion is a damage or metamorphism caused by environment, most of corrosion happens under the atmospheric environment, the corrosion factors includes oxygen, humidity, temperature change and pollution, salt-spray corrosion is a usual and most destructive atmospheric corrosion, the corrosion composition is Nacl, it comes from ocean and inland saline.

The salt spray test includes neutral salt spray test (NSS), acid salt spray test (ASS) and copper accelerated acetic acid salt spray test (CASS):

1. NSS test is the most widely test method, it adopts 5% salt water and the solution’s PH value is around 6 to 7.

2. ASS test is developed base on NSS, it requires to add glacial acetic acid into the 5% salt water, and the solution’s PH value is around 3, the corrosion speed is 3 times faster than NSS test.

3. CASS test is the newly fast test method, it requires to add a bit of Cucl, the corrosion speed is 8 times faster than NSS test.

The technical specification includes solution concentration, R.H., temperature, test time, storage time, test period, fog quantity and PH value.

Salt spray test chamber made by Pego has good quality, the material of the body adopts PVC plastic board with features of aging resistance and corrosion resistance; the lid adopts full transparent acrylic board with feature of shock resistance and freely to observe the test procession; Saturated air barrel adopts SUS304 board to provide humidity and temperature according to Henry law. Contact us to get the quotation.