Q: I’m looking for guidance on fasteners with good resistance exposure to sodium hypochlorite. The material would need to be bleach-resistance, but also have a tensile yield strength of over 80ksi.
A: For sodium hypochlorite applications that are often used for municipal water treatment titanium, fasteners are an excellent choice. The two main grade of titanium bolts to consider are Titanium Grade 2 and Titanium Grade 5. Both grades will perform very well in bleach with the major difference being the strength of the grades. Given the minimum yield required for your application you should consider Titanium Grade 5 bolts as it has a typical yield strength of 138ksi whereas Grade 2 fasteners has a yield strength of only 50ksi.