304 BA Stainless Steel Sheet , Bright Annealed  BA With Flim Stainless  304 Sheet with Smooth Mirror Surface

304 BA Stainless Steel Sheet English Introduction

1. Product Overview

304 BA stainless steel sheet is a kind of bright annealed austenitic stainless steel plate (UNS S30400). BA stands for Bright Annealed, which is produced by cold rolling followed by bright heat treatment in protective atmosphere. The surface is smooth, silver-bright, with good flatness, less oxide scale compared with 2B finish. It can be easily further polished to mirror finish. This grade is the classic 18-8 stainless steel, compliant with ASTM A240, EN 10088, GB/T 3280 standards. Available in sheet, coil, cut plate form. We can provide MTR 3.1 test certificate for all batches.

2. Chemical Composition (wt%, ASTM A240)

• Carbon (C): ≤0.08
• Silicon (Si): ≤1.00
• Manganese (Mn): ≤2.00
• Phosphorus (P): ≤0.045
• Sulfur (S): ≤0.030
• Chromium (Cr): 18.00 ~ 20.00
• Nickel (Ni): 8.00 ~ 10.50
• Iron (Fe): Balance

3. Mechanical Properties (Annealed State, Room Temperature)

• Ultimate Tensile Strength: ≥515 MPa
• 0.2% Yield Strength: ≥205 MPa
• Elongation: ≥40%
• Hardness: ≤201 HB / ≤92 HRB
• Density: 7.93 g/cm³

Note: Good ductility, suitable for deep drawing, bending, stamping and other forming processes.

4. Core Advantages

1. BA Bright Surface: Clean, bright and uniform surface, minimal defects, ready for secondary polishing.
2. Excellent Corrosion Resistance: Resists atmospheric corrosion, fresh water, weak acid & alkali.
3. Great Formability: Outstanding deep drawing & bending performance for stamped parts.
4. Good Weldability: Can be welded by common welding methods without post-weld heat treatment.
5. Sanitary & Clean Surface: Low contamination, easy to clean, suitable for food and sanitary equipment.

5. Applications

• Food & Beverage Industry: Food machinery, kitchen equipment, water tank, sanitary vessel
• Architectural Decoration: Elevator panels, interior decoration, door panels, decorative frames
• Chemical & Environmental: Light chemical tanks, waste water treatment equipment
• Household Appliances: Refrigerator, washing machine inner parts, kitchen utensils
• General Machinery: Stamped parts, instrument shells, heat exchanger components

6. Specifications & Service

• Thickness: 0.3mm ~ 3.0mm (BA finish mainly for thin gauge)
• Size: Standard sheet 10002000mm, 12192438mm, customized cutting available
• Surface: BA (Bright Annealed)
• Service: Slitting, cutting to size, sample support, material test certificate, third-party inspection acceptable