"DQAK is an acronym for Drawing Quality Aluminum Killed. The base metal is 1008 Drawing Quality Steel. As compared with sheets of commercial quality, Drawing Quality Aluminum Killed sheet has a greater degree of ductility and is more consistent in performance, using specially killed steel with Aluminum as the deoxiclizing agent."
https://stockcarsteel.com/cold-rolle...ak-steel-sheet
https://www.myalro.com/gradeinfo/Met...t.aspx?gp=0352
HAMB thread on topic:
https://www.jalopyjournal.com/forum/...to-use.786599/