BA Finish Stainless Steel Sheet
Product Overview
BA Finish Stainless Steel Sheets are cold-rolled, precision-annealed flat products processed in a controlled protective atmosphere (hydrogen/nitrogen mix) to prevent oxidation. This bright annealing process preserves the natural reflectivity of the cold-rolled strip, achieving a highly reflective, mirror-like surface with a surface roughness of Ra <= 0.4 um.
Designed for applications requiring both corrosion resistance and aesthetic finish, our BA sheets eliminate the need for mechanical polishing after stamping or forming, reducing fabrication costs for OEMs and metal service centers.
Key Features
Controlled Bright Annealed Surface
Retains a uniform, high-gloss reflective finish without scale formation, eliminating post-fabrication polishing.
01
Precise Dimensional Control
Produced on 20-high Sendzimir rolling mills ensuring strict thickness tolerances and superior flatness.
02
Corrosion Resistance
Stable chromium-oxide passive layer maintained across the sheet surface, compliant with ASTM A240 and EN 10088-2 standards.
03
Clean Processing
Supplied free of rolling oil residues, minimizing contamination risks in pharmaceutical and food-grade environments.
04
Fabrication-Ready Protection
Optional laser-cuttable PVC protective films (black/white or transparent) applied to prevent surface scratching during shearing, bending, or laser cutting.
05
Technical Specifications
|
Parameter |
Specification |
|
Standard Grades |
Austenitic: 304/304L, 316/316L; Ferritic: 430 |
|
Thickness Range |
0.3 mm – 3.0 mm |
|
Standard Widths |
1000 mm, 1219 mm, 1500 mm (Custom slitting available down to 20 mm) |
|
Standard Lengths |
2000 mm, 2438 mm, 3000 mm, or coil form |
|
Surface Roughness |
Ra <= 0.4 um (measured via stylus profilometer per ISO 4287) |
|
Thickness Tolerance |
Per ASTM A480 / EN ISO 9445 (Precision tight tolerances available upon request) |
|
Hardness |
Annealed condition (e.g., Rockwell B80 max for 304) |
|
Applicable Standards |
ASTM A240, ASME SA240, EN 10088-2, JIS G4305 |
Grade 304 / 304L: Standard austenitic grade containing 18% chromium and 8% nickel. Offers excellent formability and resistance to atmospheric corrosion. 304L features ultra-low carbon (C <= 0.03 percent) to prevent carbide precipitation during welding.
Grade 316 / 316L: Molybdenum-bearing austenitic grade (2 to 3 percent Mo) providing enhanced pitting and crevice corrosion resistance in marine, chemical, and pharmaceutical processing environments.
Grade 430: Ferritic stainless steel option providing cost-effective corrosion resistance for indoor architectural trim and home appliance panels.
Applications
Commercial Kitchen & Food Equipment
Restaurant countertops, commercial refrigeration linings, ventilation hoods, and food processing conveyors.
Architectural & Interior Design
Elevator cabins, wall paneling, escalators, column covers, and decorative metal facade trims.
Cleanrooms & Pharmaceutical
Cleanroom pass-throughs, modular wall systems, hospital operating room interiors, and sterile storage cabinets.
HVAC & Appliance
Heat exchanger housings, micro-perforated acoustic panels, and premium appliance front panels.
Custom Thickness, Dimensions, and Processing
We support tailored processing requirements to match your manufacturing line efficiency:
Custom Slitting
Precision multi-strand slitting for narrow coil widths with burr-free edges.
Sheet Blanking & Shearing
Cut-to-length services meeting exact diagonal squareness tolerances.
Surface Protection Options
Laser PVC (PE film designed for fiber/CO2 laser cutting without edge lifting or residue).
Standard Fiber PVC (for mechanical bending and stamping).
Double-side or single-side masking available.
Quality Control and Surface Inspection
Every production lot undergoes rigorous multi-stage inspection on our processing line prior to packaging:
100 percent Visual Inspection under High-Lux Lighting: Sheets are manually and optically reviewed by trained inspectors under specialized high-intensity overhead lighting to catch micro-scratches, pits, roller marks, or pinholes before shearing.
Roughness Testing (Ra Verification): Periodic sampling tested using a calibrated stylus profilometer to ensure strict adherence to the Ra <= 0.4 um threshold.
Mechanical & Chemical Verification: PMI (Positive Material Identification) spectrometer checks and tensile testing for yield strength, elongation, and hardness.
Traceability Certification: Each shipment is accompanied by an EN 10204 3.1 Mill Test Report (MTR) mapping the exact heat number, chemical composition, and mechanical properties.
Packaging and Shipping
To prevent transit damage to high-gloss BA surfaces, packaging is engineered for heavy industrial logistics:
Export-Standard Wooden Pallets
Fumigation-free plywood skids or solid wooden crates reinforced with steel strapping.
Interleaving Protection
Waterproof kraft paper or PVC film interleaving between individual sheets to prevent abrasion during ocean or land transit.
Edge Protection
Hard plastic or metal edge protectors installed along all four vertical and horizontal corners.
Container Loading
Secure blocking and bracing inside 20GP/40GP containers or breakbulk vessels, managed by experienced logistics teams.
FAQ
Request a Quote
To receive a precise quotation for your project, please provide the following details:
Stainless Steel Grade (e.g., 304, 316L)
Thickness, Width, and Length (or Coil specifications)
Quantity (in Metric Tons or total square meters)
Surface Protection Requirement (e.g., Laser PVC film, paper interleave)
Destination Port / Delivery Location
[ Request a Quote / Submit RFQ ] (Link to Inquiry Form)