The phrase "as a scrap" is correct and can be used in written English.
It can be used to refer to something that is considered insignificant or a small piece of something larger, often in a metaphorical sense.
Example: "He tossed the old report aside, treating it as a scrap of paper that no longer held any value."
Alternatives: "as a fragment" or "as a piece".
"There is no such thing as a scrap bike," he says.
Zero-waste design strives to create clothing patterns that leave not so much as a scrap of fabric on the cutting room floor.
A few days later a man described as a scrap collector went to the Hippodrome and tried to take the last piece.
This innocuous wisp of a film, as weighty as a scrap of fax paper caught in an updraft, suggests that the answer is no.
Though Archimboldi's literary career is conjured with Bolaño's customary gestural fulsomeness, "2666" never presents so much as a scrap of the fictional master's fiction.
His use of symbolism in The Scarlet Letter is particularly effective, and the scarlet letter itself takes on a wider significance and application that is out of all proportion to its literal character as a scrap of cloth.
He began as a scrap-metal trader in London, then found himself trading commodities in Hong Kong in the 1970s.
He quite agreed with his boss when the man said he was not succeeding as a scrap-metal reporter.
Ernest Newman, the influential critic of the Sunday Times, dismissed Janacek as a "scrap-by-scrap composer", but the Manchester Guardian hailed the work as a masterpiece.
Coming from humble origins his father started out as a scrap-metal merchant he poses as the champion of the "little guy" and the Mittelstand, Germany's small and medium-sized companies, railing against corporate fat-cats and American-style "hire-and-fire" practices.
A biggish crowd gathered, as if a scrap was about to kick off.
