Stainless Steel BA Finish Sheets

Sample of Stainless Steel BA Finish Sheets

Stainless steel ba finish is an abbreviation for bright annealed stainless steel. Its surface is like a mirror, you can find people’s shadows, but it is slightly darker than the mirror stainless steel plate, many people consider the price issue, and will choose to use stainless steel ba finish instead of the mirror stainless steel sheet.

Huaxiao Metal can provide different grades ba stainless steel, such as 201 ba stainless steel sheets, 304 ba stainless steel sheets, 430 ba stainless steel sheets, etc.  If you need samples of bright annealed stainless steel for your reference. Huaxiao Metal can be free to send you. If you need stainless steel BA finish sheet or other stainless steel raw materials, please free to contact me.

Huaxiao Metal has 14 years of production and export experience in the stainless steel industry. We provide customers with high-quality products and services. We insist on quality first and price second. To meet the needs of customers in all aspects, we support product customization services. We can also provide various test certificates sample confirmation and factory inspection cooperation before placing an order.

Stainless steel Bright and annealing (BA)

The copper alloy is easily oxidized during the heat treatment. To prevent oxidation and improve the surface quality of the workpiece, it must be annealed in a protective atmosphere or vacuum, so-called bright annealing.

The protective atmospheres commonly used in the heat treatment of copper and copper alloys are water vapor, ammonia decomposition, incomplete combustion, and dehydration of ammonia, nitrogen, dry hydrogen, and partially combusted gas (or other combustible gases). Can be selected according to the type, composition, and requirements of the alloy.

Pure copper and white copper are not oxidized in a weak reducing atmosphere and are most suitably protected by combustion ammonia containing 2% H2 or a gas containing 2% to 5% H2 and CO incomplete combustion. Pure copper can also be protected by steam.

To prevent hydrogenolysis, when the oxygen-containing copper is annealed, the hydrogen content in the protective atmosphere should not exceed 3% or heat treatment in a micro-oxidizing atmosphere as described above. Pure copper is also widely used for vacuum annealing.

Bronze containing aluminum, chromium, niobium, and silicon can achieve bright annealing only in a highly reducing atmosphere. The heat treatment (annealing or quenching) of beryllium bronze is usually decomposed by ammonia decomposition, but the undecomposed part of ammonia should not exceed 20%, otherwise, bubble problems may occur.

Brass with low zinc content can be brightly annealed, but bright annealing of brass with content greater than 15% has not been resolved. This is because the decomposition pressure of zinc oxide is low, and ZnO can be formed in an atmosphere containing a slight oxidizing gas, and when it is heated to 450 °C or higher, zinc starts to volatilize and dezincification the brass.

To overcome this disadvantage, it can be annealed under higher pressure conditions. The protective atmosphere used for brass is incompletely combusted gas, ammonia, water vapor, and the like. The protective atmosphere should be free of sulfur. The workpiece needs to be carefully cleaned before heat treatment, and there should be no oil or other dirt on the surface.

Different 2B and Stainless Steel BA Finish

The main difference between 2B and stainless steel BA finish plate is annealing, 2B is annealing, pickling, the surface is oxidized to a certain degree, and it is darker; BA bright annealing, the surface is not oxidized, and the surface is brighter. Cold rolling–annealing pickling–flattening 2B

Cold rolling–bright annealing–flattening BA

Cold rolling–annealing pickling–flattening 2B

Cold rolling–bright annealing–flattening BA

The main difference is annealing, 2B is annealing, pickling, the surface is oxidized to a certain degree, and it is dark; BA is bright annealing, the surface is not oxidized, and the surface is brighter

Bright Annealing stainless steel ba finish sheets, the difference from the 2B plate is that the annealing process is different, 2B adopts the annealing and pickling combination process, and BA is annealed under a hydrogen-protected oxygen-free environment.

The rolling process and the finishing process of the two surfaces are also different.
The BA plate is not used for wire drawing. If it is to be drawn, it is overkill and waste.

The 2B plate has a matt surface, and the object can not be seen. The BA board is approximately mirror-like and can illuminate the object (slightly paste).

Both 2B and BA can be polished into 8K mirror plates, but 2B requires more polishing steps, and BA can achieve 8K effects with just a fine throw. Depending on the final product, there are differences in whether or not BA is polished. Some BA products do not require polishing and are used directly.

What is the typical application difference between stainless steel BA finish and 2B surface stainless steel?

Stainless Steel BA Finish

It is mainly used in sinks, dishwashers, pump manufacturers, chimney tubes, heat exchangers, clothes dryers and washing machines, cookware, microwave ovens, cookware, profiles, electrical cabinets, laboratory cabinets, pipes, tableware, stamping parts, Commercial kitchens, cars, boilers, smart clips, etc.

2B Finish Stainless Steel

2B surface stainless steel is mainly used in machines/instruments, buses, tank construction, commercial kitchens, construction industry, automobiles, boilers, smart fixtures, railway vehicles, profiles, electrical cabinets, laboratory cabinets, pipes, tableware, tableware, pressure plates, Stamping parts, surgical instruments, pump manufacturers, beer barrels, chimney pipes, etc.