Home > Sheet and Plates > Stainless Steel 321/321H Sheet and Plates
Weston Stainless, a UK-based company in Midland, is a well-known supplier of top-quality stainless steel products, offering long-lasting and reliable solutions for different industrial uses. Their Stainless Steel 321/321H Sheets and Plates are composed of titanium-stabilized austenitic stainless steel, providing strong resistance to high temperatures and intergranular corrosion. The sheets and plates are offered in various thicknesses, widths, and lengths, making them suitable for use in different industries. SS 321 offers good oxidation resistance, while SS 321H with greater carbon content adds strength and creep resistance, and these materials are best suited for high pressure and temperature conditions.
Stainless Steel 321/321H Plates and Sheets are made of 17-19% chromium, 9-12% nickel, and titanium for increased stability. SS 321H contains greater carbon content (0.04-0.10%) to provide greater strength at higher temperatures. These materials display a tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 40%. They have a hardness level of around 95 HRB. They physically possess a density of 7.9 g/cm³, melting point of 1400°C, and thermal conductivity of 16.3 W/m-K, allowing them to sustain excellent durability even in harsh environments.
Specifications: ASTM A240 / ASME SA240
Dimensions: ASTM, ASME, and API.
Width: 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Thickness:4mm-100mm
Length : 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface Finish: 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, chequered, embossed, hairline, sand blast, Brush, etching, Hot rolled plate (HR), Cold rolled sheet (CR), SATIN (Met with Plastic Coated) etc
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 |
| 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 % |
Contact us to get a quick quote for your requirement.
High corrosion resistance and are available up to 1.2-12mm thickness and width up to 2000mm. They are ideal for high temperature application.
Higher corrosion resistance and are available up to 0.3-6mm in thickness and up to 1500mm in width. They are perfect for applications requiring a smooth finish and high strength.
These plates provide outstanding resistance to corrosion, and come in thickness from 3mm up to 12mm and have sizes of up to 1500mm x 3000mm. Raised pattern surface increases the gripping value, thus commonly used for floor and structural work.
Extremely resistant to corrosion and can be perforated from 0.5mm up to 20mm in diameter. The sheet thickness is also from 0.3mm up to 3mm. It is used in filtration and ventilation systems.
Corrosion with a high accuracy level. Thickness is available between 0.05mm up to 3mm, and cut-to-size service is also possible to get precise dimensions for several alignment and spacing applications.
Excellent resistance to corrosion, and a reflective finish. These plates are manufactured in thickness range from 3mm to 50mm. The size for these plates up to 2000mm x 6000mm is ideal for aesthetic applications as well as a high-quality surface finish.
Stainless Steel 321/321H Sheets and Plates find extensive application in aerospace, petrochemical, power generation, and marine sectors. Their high heat resistance makes them well suited for exhaust manifolds, heat exchangers, furnace parts, and boiler casings. They are also widely used in chemical processing facilities, pressure vessels, and food processing equipment because of their high corrosion resistance. Their strength, durability, and formability make them a first choice for high-temperature applications where mechanical stability and oxidation resistance are important.
Weston Stainless furnishes test certificates such as Mill Test Certificates (MTC) according to EN 10204 3.1 in order to certify the authenticity of materials and quality to industry requirements. The sheets and plates are well-packed wooden crates, plastic wrapped, or carton box-covered to eliminate damage during transport. With proper supply chain distribution, Weston Stainless makes timely deliveries across the world and meets high-pressure industrial requests with precision and respect.
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