Q: Looking for bolts that will be used for large Diesel engine exhaust compensators in a power plant. The normal operating temp of the exhaust is 700 degrees F at full load. Loads do fluctuate often and engines experience downtime. The exhaust system does experience extreme force and vibration. Any suggestions?
A: It sounds like a safe bet would be A286 bolts. This material is geared for high temperature exhaust streams and will do well in this kind of environment. A286 is an age hardened material that can retain its strength to 1300°F. They also offer oxidation resistance to 1500°F . A286 fasteners offer 130ksi UTS and of 85ksi yield strength.