3000psi tanks...why?

[Rhone Man]

As for why 2400 and 3000psi are the standards, I do no know.

I believe those standards grew out of the normal maximum working pressure for non-industrial sized air compressors in (respectively) the 1970s and 1980s.

Now that more powerful compressors are available, more HP Steels (filled to 3500) are becoming increasingly common.

---------- Post added at 11:43 AM ---------- Previous post was at 11:41 AM ----------

Yes. That was my understanding as well. My point was that I'd never seen a tank rated to 300 bar.

I think you get carbon fibre tanks which are actually rated to 330 bar (5000 PSI) but they are rarely used in scuba for a variety of reasons.