Corrosion-Resistant 304 Stainless Steel Sheet Chromium Nickel 2B BA Finish ASTM A240

This corrosion-resistant 304 stainless steel sheet is built around a carefully balanced chromium-nickel alloy matrix that delivers dependable performance in chloride-rich, humid and chemically aggressive environments. With a nominal composition of 18% chromium and 8% nickel, the material forms a stable, self-repairing chromium oxide passive layer on its surface. That passive film is the reason 304 sheet resists rust and pitting far better than ordinary carbon steel, making it a first choice for coastal construction, marine hardware, desalination equipment and chemical processing plants. Every coil is sourced from TISCO and POSCO grade stock and rolled to tight dimensional tolerance.

The sheet is produced on advanced cold rolling mills under strict ASTM A240 process discipline, then annealed and pickled to restore corrosion resistance after forming. Surface finishing options include the smooth 2B mill finish for general fabrication, the brighter BA finish for cleaner aesthetics, and No.4 or hairline textures for decorative panels. Because the chromium-nickel chemistry is controlled within a narrow window, customers receive consistent corrosion behaviour from coil to coil and shipment to shipment. Independent salt spray testing confirms that untreated 304 sheet withstands more than 500 hours of neutral salt fog without visible pitting, giving specifiers confidence in long-term outdoor and marine durability.

• Chromium-Nickel Alloy Matrix: A minimum 18% chromium and 8% nickel content creates a durable passive oxide layer that continually regenerates itself when scratched or abraded.
• Marine-Grade Corrosion Resistance: Resists chloride attack, pitting and crevice corrosion in coastal, offshore and de-icing salt environments where carbon steel would rapidly fail.
• ASTM A240 Compliance: Manufactured, tested and certified to the ASTM A240 standard, with mill test certificates available for every heat number on request.
• 2B and BA Surface Finish: Smooth 2B mill finish suits general fabrication, while the bright annealed BA finish delivers a cleaner, reflective surface for visible applications.
• Precision Thickness Control: Thickness tolerance held to ±0.02mm on standard gauges, ensuring predictable bend radii and consistent weld penetration.
• Custom Cut-to-Length Service: Sheets can be sheared, slit or laser cut to your exact width and length, reducing scrap and downstream processing time.

This corrosion-resistant sheet is specified across a broad range of demanding industries. Coastal architects use it for curtain wall panels, handrails and facade cladding that must survive salt-laden air. Marine engineers select it for deck fittings, brackets and structural components on vessels and offshore platforms. Chemical and petrochemical plants rely on it for storage tanks, piping and reactor internals exposed to mildly acidic or alkaline media. Desalination and water treatment facilities favour the grade for its resistance to chlorides, while food and pharmaceutical processors value its cleanable, non-reactive surface. Wherever moisture, salt or aggressive chemistry threatens structural integrity, 304 chromium-nickel sheet provides a dependable, low-maintenance answer.

Each sheet is protected with an anti-rust VCI film and an optional peel-off PVC coating, then stacked on fumigated wooden pallets and steel-strapped for safe sea and rail transport. Every shipment carries a mill test certificate, dimensional inspection report and composition analysis. We back the material with a performance guarantee and offer technical guidance on welding, forming and passivation. Fast-track export handling and container stuffing are available for urgent projects, and our engineers can advise on the optimum finish and gauge for your specific corrosion exposure.