Electrician's alloy (6)
I believe the answer is:
solder
'electrician's alloy' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for solder that I've seen before include "Join two metal surfaces together" , "Soft alloy used to cement metal parts" , "Join or fuse metal, using an alloy" , "Metal bond" , "Fusible jointing alloy" .)