ASTM A29 - This specification covers a group of common requirements which, unless otherwise specified in the purchase order
or in an individual specification, shall apply to carbon and alloy
steel bars under each of the following ASTM specifications or
under any other ASTM specification which invokes this
specification or portions thereof:
Hot rolled carbon steel bars: A321, A499, A575, A576, A663, A675, A689, A695
Cold finished carbon steel bars: A108, A311
Hot rolled alloy steel bars: A322, A304, A434, A739
Cold finished alloy steel bars: A331, A434, A696
Specification ASTM A29 opened the door to studs being made not only of cold finished carbon bars But of hot finish carbon bars and hot and cold finished alloy bars...
Hope this helps