BA finish stainless steel, also known as bright annealed stainless steel, is a surface treatment type characterized by high gloss and a smooth, mirror-like appearance. This surface condition is achieved by subjecting cold-rolled stainless steel sheets to bright annealing and flattening after cold rolling. Since BA surfaces do not undergo acid pickling or oxidation steps, they exhibit greater brightness and lower oxidation levels. This finish is widely used in high-end applications demanding superior surface gloss and cleanliness.
BA Finish Stainless Steel Products for Sale
Wanzhi Group offers a variety of stainless steel surface finishes, including 2B, 2D, BA, NO.1, NO.4, 8K mirror, brushed, and more. BA finish stainless steel is one of our flagship high-gloss products, suitable for materials such as 304, 316L, and 430. We provide material certificates, sample testing, and free quotation services.
Product Specifications
| Item | Parameter Description |
| Product Name | BA Surface Stainless Steel Coil/Sheet |
| Thickness Range | 0.1mm – 300mm (Customizable as per customer requirements) |
| Length and Width | Customizable |
| Surface Treatment | BA (Bright Annealed) |
| Standards | ASTM A240, JIS G4305, EN 10088, GB/T 3280, etc. |
| Material Models | 304, 304L, 316, 316L, 430, 201, etc. |
| Production Process | Cold Rolled + Bright Annealing |
| Applications | Home Appliances, Elevator Decorations, Medical Instruments, Food Machinery, High-end Electronic Products, etc. |
Advantages of BA Finish Stainless Steel
- High Gloss: Surface reflectivity reaches 60%-80%, visually approaching a mirror-like effect.
- No Scale: Oxidation-free surface requires no acid pickling, preserving the metal’s natural color.
- Excellent Corrosion Resistance: The intact passivation layer delivers superior oxidation and corrosion resistance.
- Easy Cleaning & Maintenance: Free from pickling residues or contaminants, with a smooth surface that resists staining and facilitates effortless cleaning and disinfection.
- Superior Workability: Suitable for subsequent processes like bending, stamping, and welding without discoloration or peeling.
Application Scenarios
- Home Appliances: Refrigerator panels, washing machine housings, microwave liners, range hoods, etc.
- Architectural Decoration: Elevator cabins, interior trim strips, door/window finishes, signage, etc.
- Food & Medical: Food equipment linings, surgical instrument cabinets, sterile workbenches, etc.
- Electronics & Display: Electronic product housings, display stands, billboards, etc.
- Premium Kitchenware: High-end cookware, tableware, kitchen countertops, etc.
- Base Material: Raw material for further processing such as 8K mirror finishing, sandblasting, etching, PVD coating, etc.
Production Process
- Cold Rolling: Hot-rolled sheets are rolled to specified thickness through cold rolling mills to achieve a preliminary flat surface.
- Bright Annealing: Annealed in a protective atmosphere (e.g., hydrogen-nitrogen mixture) to prevent surface oxidation and relieve internal stresses.
- Flatness Straightening: Further improves stainless steel sheet shape and flatness through light rolling or straightening machines.
- Coiling or Shearing: Bright annealed stainless steel is coiled or cut to length according to customer requirements.
- Processing: PVD (Physical Vapor Deposition) vacuum coating (e.g., titanium gold, black titanium, champagne gold) can be applied based on application needs.
Why Choose Wanzhi Group’s BA Finish Stainless Steel?
Wanzhi Group offers complimentary samples, technical consultation, and one-stop procurement services for BA finish stainless steel. Every coil of BA plate we produce delivers exceptional surface quality (low Ra roughness values), precise mechanical properties, and outstanding corrosion resistance—ensuring material reliability!
- Extensive Range: We offer BA-finished stainless steel in multiple mainstream grades (e.g., 304, 304L, 316L, 430) across a wide thickness spectrum, with custom dimensions and special performance requirements available.
- Mature Processes: Utilizing advanced bright annealing production lines, our stainless steel achieves uniformly consistent, lustrous surfaces (60%-80% gloss) with fully intact passivation films.
- Reliable Product Quality: As an ISO 9001 and ISO 14001 certified manufacturer, we enforce stringent quality control throughout the entire process from raw materials to finished products. Equipped with advanced testing equipment including spectrometers, thickness gauges, and salt spray testers.
- Extensive Experience: Wanzhi Group possesses years of export expertise in stainless steel coils, plates, pipes, and strips, with products reaching numerous countries and regions worldwide. We also provide professional material selection and OEM/ODM customization services.
BA Stainless Steel vs 2B Stainless Steel
| Property | 2B Surface | BA (Bright Annealed) Surface |
| Core Process | Cold Rolled → Annealing (in air) → Pickling (removal of oxide scale) → Final Rolling (polishing) | Cold Rolled → Annealing in protective atmosphere (e.g., H₂+N₂) → No pickling required |
| Appearance | Silver-white matte with uniform slight gloss, no significant reflectivity. | Silver-bright semi-mirror with high reflectivity, clearly reflecting human figures (slightly less clear than 8K mirror). |
| Surface Roughness (Ra) | Higher, typically between 0.1 – 0.5 μm | Very low, typically between 0.05 – 0.1 μm |
| Glossiness | Lower, about 30% – 50% | Higher, about 60% – 80% |
| Touch Feel | Relatively smooth but with slight texture. | Very smooth, fine, like glass in texture. |
| Corrosion Resistance | Excellent. | Exceptional. |
| Surface Purity | Good. | Extremely high. |
| Main Applications | General-purpose material. | High-end decoration and specific functional fields. |
| Cost | Lower. | Higher. |
BA finish stainless steel serves as the ultimate surface for many high-end applications. The Bright Annealing surface condition perfectly preserves the inherent brightness and purity of stainless steel’s metallic color, making it a premium choice in stainless steel heat treatment processes. If you’re interested in BA finish stainless steel, feel free to contact us for free samples and quotes!