ACT Solutions - Stress Corrosion Cracking

stress corrosion cracking solutions

Stress Corrosion Cracking
Problem Stress corrosion cracking is a problem associated with heat exchangers, caused when metal fails due to being subjected to a tensile stress in a corrosive environment, often at elevated temperatures. For example, some aluminium alloys and stainless steels fracture when in contact with cholrides, whilst the presence of alkali and nitrates affect mild steel, and copper alloys crack when subjected to solutions of ammonia. It is important to be aware of the consequences of using certain materials in specific environments to avoid the problems of stress corrosion cracking.	Solution Applied Cooling Technology have developed and patented a number of longevity solutions for heat exchangers to overcome the problems of stress corrosion cracking. The use of a façade plate and tube inserts either at initial manufacture or during a refurbishment or repair programme along with the use of the correct materials for the application can be an extremely cost effective solution. Also, the use of tube plugs to isolate leaking tubes, such as our patented Jiffi-Plugs, will ensure that any repairs carried out will not induce additional stress factors to tube plates and cause complete premature failure.	> Above: Chloride stress corrosion cracking

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