Valve material (1 Viewer)

[flapjack]

So I understand a lot of valves are titanium based. In pro stock this is for both the intake and exhaust, right? On a top fueler, I think they are using some kind of stainless steel for exhaust valves. Inconel alloy or some sort. I am pretty sure these materials are based on stuff done for the aerospace industry, in turbine engines.