Stainless steel BA

As already described in detail on some of our other pages, the two most frequently used grades of stainless steel are the materials AISI 304 and AISI 316/316L.

mirrorINOX and a large number of renowned manufacturers and fabricators of cold-rolled stainless steel products are using these grades in the BA or 2B finishes.

We would like to take a closer look at the surface finish BA in the following paragraphs.

What is stainless steel BA?

BA (Bright annealed), is a specific surface finish which is produces by the mills for cold-rolled stainless steels, mainly for the grades AISI 304 and AISI 316 and in thicknesses up to a maximum of 3.0 mm.

During its production, the stainless steel is annealed in an inert gas atmosphere after cold rolling. This produces a reflective, shiny, smooth surface structure which, depending on the manufacturer and batch, can be close to a mirror-polished stainless steel of the lower quality grades.

However, stainless steel mills do not give any guarantees, standards or tolerances on the finish of the BA and the quality of the surface or its gloss and reflection can vary greatly from production batch to production batch.

Stainless steel cold rolled/BA bright annealed – where can it be used?

One field where stainless steel BA surfaces are often used is where an attractive appearance is highly crucial, i. e. all decorative applications for:

• architecture,
• shopfitting,
• yacht- and shipbuilding,
• machinery construction,
• sanitary industry,
• gastronomy- and catering industry,
• swimming pool and spa building
• medical appliances
• and others.

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