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Metal Parts of Products (Corrosion Resistance)

 

United States

ASTM B117-07 Standard Practice for Operating Salt Spray (Fog) Apparatus

 

The UK

BS 1224:1970 / BS 7479:1991

 

International

ISO 9227: 1990
 
 
 
Test Parameters of ASTM B117-07

 

ASTM B117-07 provides a controlled corrosive environment which has been utilized to produce relative corrosion resistance information for specimens of metals and coated metals exposed in a given test chamber. The test parameters are listed below:

 
Temperature in test chamber
35 oC (+1.1 oC / -1.7 oC)
 
Relative Humidity in test chamber
95 – 98%
 
Salt solution (which produces salt spray)
Sodium Chloride * (5%) + Water** (95%)

 

* sodium chloride with

- total impurities of not more than 0.3% by mass,

- halides (bromide, fluoride & iodide) excluding chloride of not more than 0.1% by           mass,

- copper content of less than 0.3 ppm

- no anti-caking agents (0.0%)

 

** water conforming to Type IV water in ASTM D1193

 

PH range of the collected salt solution

PH value  6.5 – 7.2

 

 

 

 

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