As it stands Titanium-Niobium-Carbide is the single best material in the game.
Not only is it easy to get it also makes the best tools and best tanks.

This is esp. noticable in drum capacity:

TNC-Drum: 4,096,000L
That is more than a small titanium tank can hold (3,456,000L), for 6 ingots worth of material AND carry able. That is the same amount an adamantium drum can hold!

Also it's capacity doesn't really go along the other drum -> tank ratios.
While other drums -> small tanks have a x27 capacity multiplier, the TNC tank is only double
Drum -> dense tank is normally x125 multiplier, TNC is 62.5.

I suggest reducing the TNC Drum capacity to 1,024,000 (which is the same pattern as the other drum have, each x2 form the previous) and adjusting the tank values accordingly.

I also think it shouldn't also double down as the best tool material (Q:4, S:16, D:7680)