Question: what ra is 2b finish?
Answer: 2B Mill Finish is a bright defect free finish that is produced by a final, light cold roll pass on polished rolls. There is no visible “grain” with this finish. Typical Ra would be 0.30 - 0.50 µm (12-20 µin). Note: A 2B mill finish is only available on stainless steel sheet stock (less than 7ga).