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2009 02 Notten NTT Consultancy UreaKnowHow.com Heat tints on stainless steels

The presence of heat tints accelerates initiation of localised types of corrosion like stress corrosion cracking, pitting and MIC. To minimize the risk of localised types of corrosion heat tints have to be removed. From point of view of corrosion a chemical cleaning by means of pickling with 20% HNO3 + 4% HF or 6% H2SO4 + 5% HF + 0.1% H202 has to be preferred above a mechanical cleaning.

 

 

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