My parents never felt that I was college 'material'. [=that I was someone who should go to college]
Her boss regards her as executive 'material'. [=as someone who would make a good executive]
The comedian gets his 'material' from things that have happened to him.
(..) The cradle. "This is the next thing, Tony." This...is the next me. The regeneration cradle prints tissue, it can't build a living body. It can. You can. You lacked the materials. You're a brilliant woman, Helen. But we all have room to improve. Oh. I didn't realize you were waiting. (..)2015 Avengers: Age of Ultron