We don't have synonyms for bar stock yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are cardstock, bar stool and bergstock.
(n) :
(metalworking) Portions of metal (stock) in the form of bars, suitable for machining (such as turning) or fabrication (such as welding). It comes in standard cross-sections and certain lengths, such as 6 to 12 feet.
(n) :
(metalworking) Portions of metal (stock) in the form of bars, suitable for machining (such as turning) or fabrication (such as welding). It comes in standard cross-sections and certain lengths, such as 6 to 12 feet.