-- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

on this site
current topics
topic 21796

Surface finish definition for stainless steel


I am looking for the definition of surface finish no. 2B, 4, 8, ... on stainless steel. Questions related to that topics on your site in the past were pointing to Nickel Development Institute standard 9012. This standard is no longer on their site. Where can I get the information?

Christian Doucet
Kaba Ilco - Montreal, Quebec, Canada


Check out the SSINA publications page for more information:

No. 2B finish is defined as a bright, cold-rolled finish resulting in the same manner as No. 2D finish, except that the annealed and descaled sheet receives a final light roll pass through polished rolls. This is the general-purpose cold-rolled finish that can be used as is, or as a preliminary step to polishing.

No. 2D is a dull finish which results from cold rolling followed by annealing and descaling, and may perhaps get a final light roll pass through unpolished rolls. A 2D finish is used where appearance is of no concern.

Toby Padfield
- Troy, Michigan


I try to find out finish surface of stainless steel sheet 2B = Ra (micron-meter)? Because I see some webpage, 2B mean process of forming stainless steel sheet (cold rolled) and it is primary to polish with grit # 80, 100, 180, 240 or more for Ra below. But some webpage, I see 2B = 0.1-0.2 micron meter. I will polish inside ss tanks for surface reach to < 0.8 micron meter. The thank make for storage purify water (pharmaceutical plant). If 2B surface = 0.1-0.2 micron meter. after I weld ss sheet. I only polish seam with grit # 240, yes or not?

Please advise me as possible.

Sumittra Khemtong
- Bangkok, Thailand

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site


Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.