Name only concocted to identify material (5)
I believe the answer is:
nylon
'material' is the definition.
(nylon is a kind of material)
'name only concocted' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'concocted' is an anagram indicator.
'only' anagrammed gives 'ylon'.
'n'+'ylon'='NYLON'
'to identify' is the link.
(Other definitions for nylon that I've seen before include "where ladder can appear?" , "Tough synthetic material" , "Type of material" , "Artificial material" , "Plastic used for stockings" .)