Exomatter

Hadronium is powerful and strong, but ridiculously dense, to the point where its usefulness becomes questionable at even moderate strengths. Electronium, while light and extremely flexible in terms of capabilities, cannot exist outside of an artificially generated field. Exomatter is the term for compounding these two exotic forms of matter. Combining the strength of the former with the malleability of the latter, it functions as an 'acceptable' middle ground.

By mass, exomatter is largely hadronium, while by volume it is largely electronium. As the definition is extremely broad, it covers an immensely vast array of materials and uses. For the most part, however, it cannot be forged en mass - it needs to be meticulously designed and carefully constructed.