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Khush Sheets and Plates is a well-known manufacturer and supplier of high-quality Duplex Steel S31803 Circles in Kolkata, India. With years of experience in the industry, we provide products that are of international standards. Our Duplex Steel S31803 Circles are famous for their outstanding strength, corrosion resistance, and durability, making them perfect for various industrial applications. We give priority to customer satisfaction by providing precision-engineered products at reasonable prices. Supported by cutting-edge technology and a talented group of workers, Khush Sheets and Plates is a reliable ally for Duplex Steel solutions across India and the rest of the world.
Duplex Steel S31803 Circles contain about 22% Chromium, 5-6.5% Nickel, 3-3.5% Molybdenum, and a balanced combination of Nitrogen and Manganese. The composition provides superior corrosion resistance and strength. The steel has a tensile strength of approximately 620 MPa, yield strength of approximately 450 MPa, and elongation of 25%. With a hardness value of about 293 HB, the steel provides better toughness and fatigue strength. Its two-phase microstructure—comprised of austenitic and ferritic phases—offers a balanced composition of properties appropriate for extreme environments.
| Standard | ASTM A240, ASME SA240 |
| Dimensions | ASTM, ASME and API |
| Standard | JIS, AISI, ASTM, GB, DIN, EN, etc. |
| Thickness | 1 Mm To 100 mm. |
| Diameter | Upto 2000 Mm. |
| Circle Diameter | 3″ DIA up to 38″ DIA 1500 lbs max. |
| Circles Form | Cold Rolled, Small Flat, Industrial, Proof Machined, Perforated, Forged Steel, Cnc Finish, Polished Unique, Hot Rolled Circle.. |
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex 1803 | 1.4462 | S31803 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Khush Sheets and Plates based in Kolkata, India, is a leading supplier and stockist of high-quality metal products, including Sheets, Plates, Coils, Foils, Angles, Channels, Circles, and Slitting Coils, all offered with exceptional service and tailored to meet our customers specific requirements. With a focus on delivering superior products, we cater to a wide range of industries, providing reliable solutions for diverse applications. Our extensive inventory includes Known for our unique finishing techniques and commitment to quality. We are dedicated to ensuring customer satisfaction through dependable service and top-notch products.
Duplex Steel S31803 Circles offer several advantages, making them ideal for industrial applications. Their dual-phase microstructure provides exceptional strength and toughness, outperforming many conventional stainless steels. These circles have excellent corrosion resistance, especially against pitting, crevice corrosion, and stress corrosion cracking, even in harsh environments. They exhibit superior thermal conductivity and low thermal expansion, ensuring stability under temperature fluctuations. With high weldability and machinability, they are suitable for complex fabrication. Additionally, Duplex S31803 Circles offer a cost-effective solution due to reduced material thickness without compromising durability and performance.
Yes, we offer custom sizes for Duplex Steel S31803 Circle to meet specific project needs. Our team at Khush Sheets and Plates is dedicated to providing tailored solutions for all your requirements. For more details, contact us at sales@aaronsheetsplates.com.
Duplex Steel S31803 Rings are found to be extensively applied in industries because of their high corrosion resistance and mechanical properties. They are typically utilized in chemical processing, marine, and oil & gas applications, where pitting and stress corrosion cracking resistance is critical. They are also used in heat exchangers, pressure vessels, desalination plants, and structural elements subjected to extreme environments. The material’s strength-to-weight ratio is suitable for offshore platforms and architectural uses. Its versatility and toughness provide consistent performance in industrial applications as well as commercial.
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