Hi,
ASTM (
has a huge number of standards which include 304 SS. E.g., for every form (bar, forgings, plate, pipe, sheet, tubing, wire, etc.). Below are those with 304 stainless in the title.
A1022-01 Standard Specification for Deformed and Plain STAINLESS Steel Wire and Welded Wire for Concrete Reinforcement
A813/A813M-01(2005) Standard Specification for Single- or Double-Welded Austenitic STAINLESS Steel Pipe
A814/A814M-05 Standard Specification for Cold-Worked Welded Austenitic STAINLESS Steel Pipe
F593-02e2 Standard Specification for STAINLESS Steel Bolts, Hex Cap Screws, and Studs
F594-02 Standard Specification for STAINLESS Steel Nuts
G108-94(2004)e1 Standard Test Method for Electrochemical Reactivation (EPR) for Detecting Sensitization of AISI Type 304 and 304L STAINLESS Steels
If you are only concerned with composition, this is the one:
A959-04 Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels