Browse Our Collection
Get instant quotes that fit your budget perfectly.
Nial Sheets and Plates is a reputable manufacturer and supplier of top-notch Stainless Steel 321 Sheets and Plates based in Houston, USA. We cater to industries that demand exceptional resistance to intergranular corrosion and stability at high temperatures. Our Stainless Steel 321 Sheets and Plates are meticulously crafted to ensure reliable performance, even in applications that face continuous exposure to temperatures reaching up to 900°C. With our commitment to strict quality control, advanced processing techniques, and prompt delivery, we empower customers in the petrochemical, aerospace, heat treatment, and chemical processing sectors to meet their challenging project requirements with durable Stainless Steel 321 Sheets and Plates.
Stainless Steel 321 Sheets and Plates are a type of stabilized austenitic stainless steel, featuring approximately 17–19% chromium, 9–12% nickel, and titanium added (at least five times the carbon content) to prevent carbide precipitation during welding. They boast impressive mechanical properties, with tensile strength ranging from 515 to 750 MPa and yield strength around 205 MPa. These sheets and plates retain their toughness and strength even at elevated temperatures, providing excellent resistance to oxidation and intergranular corrosion in heat-affected zones.
| Specifications | : | ASTM A240 / ASME SA240 |
| Thickness | : | 4mm-100mm |
| Width | : | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | : | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| 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 sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | : | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| Material | Size | Thickness |
| PLATES & SHEETS | 1000 mm x 2000 mm | 0.1mm To 100 mm Thickness |
| 1220 mm x 2440 mm (4′ x 8′) | ||
| 1250 mm x 2500 mm | ||
| 1500 mm x 3000 mm | ||
| 2000 mm x 4000 mm | ||
| 2000 mm x 2000 mm |
| Surface Finish | Definition | Application |
|---|---|---|
| 2B | Those finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster. | Medical equipment, Food industry, Construction material, Kitchen utensils. |
| BA | Those processed with bright heat treatment after cold rolling. | Kitchen utensils, Electric equipment, Building construction. |
| NO.3 | Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001. | Kitchen utensils, Building construction. |
| NO.4 | Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001. | Kitchen utensils, Building construction, Medical equipment. |
| HL | Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size. | Building Construction. |
| NO.1 | The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling. | Chemical tank, pipe |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless steel 321 sheets and plates have several key advantages, making them ideal for high temperature applications. They exhibit excellent resistance to oxidation, corrosion and carburization, especially at temperatures up to 900°C (1650°F). The titanium content improves the stability of the alloy and prevents carbide precipitation during welding, increasing its durability and strength. Stainless steel 321 is also highly resistant to stress corrosion cracking and provides excellent formability and weldability. These characteristics make it ideal for industries such as aerospace, chemical processing and power generation, where reliability and long-term performance are critical.
You’ll find Stainless Steel 321 Sheets and Plates widely utilized in applications that require both stability and corrosion resistance under continuous high heat. In the aerospace industry, they are commonly used for exhaust manifolds, jet engine components, and thermal shields. Petrochemical and refinery plants depend on them for heat exchangers, furnace parts, and piping systems that are exposed to high temperatures. They are also perfect for expansion joints, chemical processing equipment, and food processing machinery. Their ability to resist scaling and intergranular attack makes them an excellent choice for welded structures and components where high-temperature service and corrosion resistance are essential for long-lasting durability.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
Discover high-quality products tailored to meet your unique needs and preferences.
Get instant quotes that fit your budget perfectly.
Houston, TX 77041
Copyright 2025 Nial Sheet and Plates. All rights reserved
