Q: Which is the best material Hastelloy or Inconel?
A:Though Hastelloy C276 bolts and Inconel 625 bolts do feature some similarities, they are different – and often used for different applications – so one is not BETTER than the other. Generally speaking Hastelloy bolts offer slightly superior corrosion resistance to Inconel 625 bolts so they are focused more on purely harsh and hot corrosive environments. In contrast, Inconel 625 bolts have a unique combo of superior strength, high temperature usability and corrosion resistance. They are mainly used in corrosive environments when higher strength and heat tolerance is needed.