Hastelloy c22 stud bolts are, well known and well proven, special nickel alloy bolts which offer better protection against corrosion in comparison to its counterparts. In specific, it provides better resistance properties in wet chlorine environments. Their chief characteristics are that they provide resistance to both oxidising and non oxidising chemicals. They provide excellent resistance in oxidising media due to the presence of higher concentration of chromium. The presence of tungsten and molybdenum gives better performance in reducing medium. They provide unmatched resistance to chloride induced pitting and crevice corrosion. Their corrosion performance towards sulphuric acid, nitric acid, hydrochloric acid and phosphoric acid are commendable. These bolts show exceptional attributes towards their efficiency in higher temperatures and high stress environments. They also exhibit high ductility and weld ability which many steel industries are after for their production lines.
They are widely used in the most corrosive environments like in flue gas desulfurization systems and in technologically advanced pharmaceutical reaction plants. Also, in chemical industries, they are used in flue gas scrubbers, chlorination system and paper bleach plants and nuclear plants.