Stainless steel mill finish #2BA or commonly referred to as a Bright Annealed (BA) Finish [1] is a bright annealed, cold-rolled finish that provides a smooth, highly reflective surface. The steel undergoes an annealing process in a controlled atmosphere to minimize oxidation and scaling. Additionally, It has a final rolling pass using polished rolls for a more reflective finish [2].

For more information about other stainless steel mill finishes, stay tuned!

Source:
[1] https://askzn.co.za/stainless-steel/tech-finishes.htm
[2] https://clintonaluminum.com/an-overview-of-stainless-steel-finishes/