Comparison Of 4 Salt Spray Test Methods in GB/T 10125

test method

Neutral salt spray test (NSS)

Acetic acid salt spray test (AASS)

Copper accelerated acetic acid salt spray test (CASS)

Alternating salt spray test

temperature

35C°±2℃

35C°±2℃

50C°±2℃

35C°-35℃

Horizontal area of 80cm flat
Average settling rate

1.5ml/h+0.5ml/h

The concentration of sodium chloride solution

50g/L±5g/L

PH value

6.5-7.2

3.1-3 3

3.1-3 3

6.5-7.2

range of application

Metal, alloy, metal coating anodic oxide film, metal matrix Organic coating

Copper + nickel + chromium or copper + chromium decorative coating
And aluminum anodic oxygen
3.1-33
Copper + nickel + chromium or nickel +
Chrome decorative plating and
Anodized film of aluminum
Chemical film

Copper + nickel + chromium or nickel +
Chrome decorative plating and
Anodized film of aluminum

Same with NSS