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 Salt spray test

Salt spray test

Salt-fog is the common and most destructive form of atmospheric corrosion. Salt spray test determines the ability of polymers or metals to withstand salt-based corrosion simulated in the Salt spray chamber. These tests are generally suitable as corrosion protection tests for rapid analysis for discontinuities, pores and damage in organic and inorganic coating.  There are four types of artificial salt spray test: neutral salt spray (NSS), acetic acid salt spray (AASS), Copper-accelerated acetic acid salt spray (CASS) and salt

 

Reference standard: GB/T 2423.17IEC 60068-2-11; GB/T 10125; ISO 9227;

ASTM B 117; GB.T 2423.18; IEC 60068-2-52; ASTM B 368; MIL-STD-202; EIA-364-26

(1) Neutral salt sprayNSS

Solution: 5% NaCl

PH: 6.5~7.2

Chamber temperature: 35

Salt settlement: 12ml/80cm2/h

 

(2) Acetic acid salt sprayAASS

Solution: 5% NaCl with acetic acid

PH: 3.1~3.3

Chamber temperature: 35

Salt settlement:12ml/80cm2/h

 

(3)copper-accelerated acid salt sprayCASS

Solution: 5% NaCl with acetic acid

CuCl2·2H2O: 0.26g/l±0.02g/l

PH: 3.1~3.3

Chamber temperature: 50

Salt settlement:12ml/80cm2/h

 

(4) Salt mist, cyclic

Salt mist:

Solution: 5% NaCl

PH: 6.5~7.2

Chamber temperature: 35

Salt settlement: 12ml/80cm2/h

 

Temperature & Humidity:

Temperature: 40±2

Humidity: 93%(+2%/-3%)

 


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