Stainless Steel Finishes

 Product Data Sheet – Stainless Steel

Stainless Steel Finishes

This note gives approximate equivalents of surface finish designations for stainless steel flat products.

 

Normal Designation in Australia Condition USAASTMA480 EuropeEurnormEN10088 GermanyDIN17 441 Typical Roughness Range µm
No 1, or S&D
Hot Rolled, Annealed, Pickled
No 1
1D
iia
3 to 6
2D
Cold Rolled, Annealed, Pickled
2D
2D
iiib
0.1 to 0.4
2B
2D Finish, Skin Passed
2B
2B
iiic
0.03 to 0.25
BA
Cold Rolled, Bright Annealed, may be Skin Passed
BA
2R
iiid
0.02 to 0.06
No 4
Mechanically Polished (linished) to a Directional Finish
No 4
2J or 2K

2J = 0.2 to 2.0

2K < 0.5µm

No 8
Mechanically Polished to a Bright, Non Directional Finish
No 8 (mirror)
2P
Tempered
2D or BA Finish, Rolled to a Higher Strength
TR
iiia
Better than 2B
Notes:
1. It is not possible to order material to a specific surface roughness range
2. The roughness of Cold Rolled Finishes (2B, BA) reduces with thinner guages
The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high performance metals for challenging service conditions. Our engineers and metallurgists will be pleased to provide further data and applications advice.

 

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