In IC2 experimental and with GT4 1.7.10:

Expected (confirmed in GT4 1.6.2):

Originally this would have been one of the only two uses for beryllium, I believe? (the other being for fusion reactions).

we are working on this one

Also, there's a typo in the liquid form of Beryllium:

vs (only one 'l'):

But it basically has no impact whatsoever