The phrase "awkward material" is correct and usable in written English.
It can be used to describe content that is uncomfortable, clumsy, or difficult to handle in a particular context.
Example: "The presentation included some awkward material that made the audience feel uneasy."
Alternatives: "uncomfortable content" or "clumsy material".
Some LEDs are made from gallium nitride, perhaps the most optically-awkward semiconductor material of all.
Lead is a material awkward to use in construction, and the process cannot deliver acid more concentrated than about 78 percent without special treatment.
But somewhere along the line "Blood Play" suffers from a failure of nerve, padding the script with an awkward lurch into material that strains toward darkness.
I found this contradiction of a staged Crowley-esque domain with the more practical aspects of domesticity to be funny, and used this awkward juxtaposition as material for my first novel The Book of Fuck, a fictionalised, tongue-in-cheek account of a reclusive rock star.
It had all the drawbacks as well: tiny bedrooms, cheap materials, awkward connecting spaces.
But they are all awkward fits for this material.
It is something that Rachel Donadio considered in this amusing essay for the New York Times a couple of years ago, in which New York literary types discussed the awkward relevance of reading material:"I did have to break up with one guy because he was very keen on Ayn Rand," said Laura Miller, a book critic for Salon.
But criticizing a black comedy/social satire for having unlikable characters, awkward situations, and uncomfortable material is awfully foolish.
The work's awkward presentation and nontraditional material subverts expectations of what a photograph is made of.
Finally, because construction work includes material handling, awkward work postures, and other physical demands, many construction workers also develop work-related musculoskeletal disorders, such as chronic low back pain, shoulder, and other joint conditions [ 7].
