A fictional sort of metal that often is called upon when in lack of a better metal, thus the name decent-tanium.
Decentanium is in every way 'decent', and can have any abilities the user of the word pleases.
(it can be stainless, unbendable, unbelieavably flexible, right away indestructible etc.)
The name resembles a combination of the words "decent" and the obligatory word ending to several metals and alloys, "-anium" (like in Titanium)
It is mostly used in a comedic matter.
That stuff obviously is made out of decentanium...
You should've used decentanium