Let's say that we have a gaseous or liquidus compound (I don't know if elements or compounds make a difference, take this as a thought experiment), and we have a tungsten or steel block that's 5cm (or less, you choose) thick. Is there any physical method for that gas or liquid to pass through that thick heavy metal block (not by drilling etc.)?
Or put it another way, is there any physically conceivable method for the gas or liquid to turn the tungsten or steel block into a gaseous or liquid form itself from the inside out?

This question was inspired by the "supercooler" concept. Is a supercooled state a solid under extreme temperature and pressure conditions, or it's still a liquid but with special properties, and can we achieve such extreme pressure and temperature in nature or in lab
Given that the gas or liquid cannot pass through the block (and I hope this is a consensus opinion), there is a very long and complex chain of events to get it through. I'm starting at the top of the liquid and working my way down, hoping to find out what is the final answer.

1. Pressure difference across block
- if gas or liquid pressure on one side is greater than the other, the gas/liquid won't go