| Plate Standards | Astm A240, / Asme Sa240 |
|---|---|
| Material Grades | 405, 409, 409l, 410, 410s, 415, 416, 430, 431, 439, 436, 436l, 441, 446, 430ti, 409m, 410db, 420 |
| Surface | 2b, 2d, Ba, No.1, No.4, No.8, 8k, Mirror, Checkered, Embossed, Hair Line, Sand Blast, Brush, Etching, Etc |
| Finish | Hot Rolled Plate (hr), Cold Rolled Plate (cr), 2b, 2d, Ba No(8), Satin (met With Plastic Coated) |
Alloy 20 Plate Manufacturer in India - High Nickel Alloy with Copper, Corrosion-Resistant Grades for Chemical and Acidic Environments
Neptune Alloys is an Alloy 20 Plate Manufacturer including corrosion-resistant nickel-iron-chromium alloy plates designed to endure sulfuric acid and other aggressive chemicals. Our plates offer resistance to pitting, crevice corrosion, and stress corrosion cracking due to chlorides. These plates are used in chemical processing, pharma production, food processing, and marine engineering. Manufactured to standards of ASTM B463, ASME SB463, and DIN 17744, plates perform best in acidic and high-temperature industries.
Material Specifications Table
| Material | Grade / Specification | Standard | Thickness Range | Size Availability | Surface Finish | Typical Application |
|---|---|---|---|---|---|---|
| Alloy 20 | UNS N08020 / WNR 2.4660 | ASTM B463 / ASTM B464 / ASTM B729 | 2 mm – 100 mm | Cut-to-Size / Sheet / Plate Forms | Hot Rolled / Cold Rolled / Annealed | Sulfuric Acid Processing & Chemical Handling |
| Alloy 20 | UNS N08020 / WNR 2.4660 | ASTM B463 / ASTM B464 / ASTM B729 | 3 mm – 120 mm | Standard Width & Length Plates | Pickled & Passivated | Food Processing & Pharmaceutical Equipment |
| Alloy 20 | UNS N08020 / WNR 2.4660 | ASTM B463 / ASTM B729 | 4 mm – 80 mm | Custom Fabrication Sizes | No.1 / No.2B Surface | Petrochemical & Marine Corrosion Environments |
- Application: Used extensively in tanks, heat exchangers, pickling systems, sulfuric acid handling units, chemical processing, and corrosive environments where resistance to stress cracking, pitting, and crevice corrosion is essential.
- Construction: Produced with exact dimensional tolerance under hot-rolled or cold-rolled circumstances. Without sacrificing corrosion performance, Alloy 20 Plates can be cut, welded, shaped, and machined to meet project specifications.
- Material Properties & Grades: Alloy 20 (UNS N08020) is an austenitic nickel-iron-chromium alloy stabilized with columbium (niobium). It is appropriate for tough industrial applications because of its exceptional resistance to sulfuric acid, chlorides, and acidic conditions.
- Extra Features: It can be polished, pickled, annealed, or passivated. offers superior heat stability, formability, and weldability. When necessary for project compliance, plates can be provided with third-party inspection and mill test certificates.
Supply Capability
| Product Supplied | Quantity | Cities |
|---|---|---|
| Alloy 20 HR Plates for Chemical Processing | 151 Pieces | Mumbai |
| Alloy 20 CR Plates for Pickling Systems | 122 Pieces | Hyderabad |
| Alloy 20 Plates for Pharmaceutical Equipment | 183 Pieces | Vadodara |
| Alloy 20 Plates for Marine & Petrochemical Use | 146 Pieces | Jodhpur |
Type of Sub-products

Polished Alloy 20 Plate Polished Alloy 20 Plate
Polished plates feature enhanced aesthetics and corrosion resistance. Used in industries such as food and beverage, where hygiene and appearance are critical.

Hot Rolled Alloy 20 Plate Hot Rolled Alloy 20 Plate
Hot rolled plates are suitable for structural applications needing strength and thickness. Their toughness and easy machinability make them perfect for pressure vessels and storage tanks.

Hot Rolled Alloy 20 Plate Hot Rolled Alloy 20 Plate
Hot rolled plates are suitable for structural applications needing strength and thickness. Their toughness and easy machinability make them perfect for pressure vessels and storage tanks.

Cold Rolled Alloy 20 Plate Cold Rolled Alloy 20 Plate
These plates offer superior surface finish and tight dimensional control. Commonly used in pharmaceutical and precision fabrication sectors where accuracy and smoothness are required.
