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Smith Fittings, located in Dubai, UAE, stands out as a top manufacturer and supplier of **Stainless Steel 321H Sheets and Plates**. These products are celebrated for their remarkable high-temperature strength, impressive corrosion resistance, and long-lasting durability. Crafted from titanium-stabilized austenitic stainless steel with a higher carbon content, they offer exceptional creep strength and effectively prevent intergranular corrosion, even in extreme heat conditions. At Smith Fittings, precision manufacturing meets rigorous quality control, ensuring that their 321H sheets and plates comply with international standards. Perfect for chemical, industrial, and power generation applications, these products guarantee reliable performance, long-term structural integrity, and resistance to scaling and oxidation in tough operating environments.
**Stainless Steel 321H Sheets and Plates** are composed of chromium (17–19%), nickel (9–13%), and titanium, with an increased carbon content that boosts high-temperature strength and helps avoid carbide precipitation. They boast a tensile strength of around 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. With a density of 8.0 g/cm³ and a melting range of 1390–1425°C, these sheets and plates deliver excellent toughness, weldability, and formability, ensuring dependable performance in both elevated temperatures and corrosive settings.
| 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 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(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 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
| 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 321H sheets and plates provide excellent corrosion resistance, especially in high-temperature environments. They are extremely durable, resistant to oxidation, and are curing up to 870°C (1600°F). The intergranular corrosion resistance makes them ideal for welding-related applications. The stability of the composite is enhanced by the addition of titanium, which helps prevent carbide precipitation. Stainless steel 321 is also known for its durability, durability and ability to maintain structural integrity under extreme conditions. These properties make it suitable for industries such as aerospace, chemical and power generation.
**Stainless Steel 321H Sheets and Plates** find their place in various applications that demand high-temperature durability and corrosion resistance. They are particularly well-suited for furnace components, heat exchangers, boilers, chimneys, and chemical processing equipment. Moreover, they play a vital role in power generation, petrochemical, and industrial frameworks where structural integrity, thermal stability, and oxidation resistance are essential. Their outstanding performance in extreme heat and corrosive environments makes them ideal for industrial, structural, and high-performance engineering applications.
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