Metal Chests

The sad part is I know whatever is locked in this thing is worth less that the chest itself. I wish there was a lock picking function soley for this situation.
My question is, what Phlegm do I need to damage one of these things? If I lug it back to my p-claim wil lt be easier to break?
My question is, what Phlegm do I need to damage one of these things? If I lug it back to my p-claim wil lt be easier to break?