Corrosion Testing
❖ Salt Spray
❖ IGC (INTER GRANULAR CORROSION TESTS)
Salt Spray Corrosion tests as per national and international standards
PROPERTIES DETERMINED
● Neutral Salt Spray test (NSS)
● Acetic Acid Salt Spray test (ASS)
● Copper Accelerated Acetic Acid Salt Spray test (CASS)
● Humidity tests @ 95 % R.H, 40 to 50 °C (NON- NABL )
SALT SPRAY CORROSION TESTING
RANGE OF CAPACITY
● Chamber 1 (1000 *700*700)
● Chamber 2 ( 1200 * 700 *700)
● Chamber 3 ( 1200 * 900 * 900)
INTER GRANULAR CORROSION TESTS
PROPERTIES DETERMINED
● Step, Dual or Ditch structure classification after electrolytic (oxalic acid) etching (practice-A)
● Corrosion rate after 120 hours (practice-B)
● Corrosion rate after 240 hours ( 5 boils of 48 hours) (practice-C)
● Macro Examination at 5X to 20X magnification of bent (180°) portion of test specimen. (15 hours boiled in copper copper sulphate 16% sulphuric acid ) (practice-E)
● Corrosion rate after 120 hours boiled in copper copper sulphate 50% sulphuric acid ) (practice-F)
RANGE OF CAPACITY
IGC practice –A
IGC practice –B
IGC practice –C
IGC practice –E
IGC practice –F
FAILURE ANALYSIS
●Root cause analysis of failed engineering components (raw material to finished products) through systematic investigation.
●Lab collects maximum amount of information from failed components through various available techniques & try to correlate one another to draw a conclusion with expert opinion.