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Yunus Sheets and Plates, located in Istanbul, Turkey, has earned a solid reputation as a reliable manufacturer and supplier of Duplex Steel S31803 Circles, serving a wide range of industrial needs around the globe. Known for their commitment to high-quality products, the company focuses on precision engineering, durability, and adherence to international standards. Thanks to their state-of-the-art facilities and a skilled team, they produce circles that boast impressive mechanical strength, corrosion resistance, and precise dimensions. With competitive pricing, prompt delivery, and tailored solutions, Yunus Sheets and Plates is dedicated to supporting various industries, from petrochemical to marine, with dependable Duplex Steel S31803 products.
The Duplex Steel S31803 Circle is made up of about 22% chromium, 5–6% nickel, and 3% molybdenum, along with nitrogen to enhance strength and resistance. This unique dual-phase microstructure, which combines austenite and ferrite, results in exceptional toughness and durability. It offers a yield strength that is nearly double that of standard austenitic stainless steels, along with excellent fatigue resistance and high thermal conductivity. Additionally, this material shows remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking, even in harsh environments. These characteristics make Duplex Steel S31803 Circles perfect for demanding structural and corrosive applications.
| 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.
Yunus Sheets and Plates based in Istanbul, Turkey, 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 Yunus 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 Circles find extensive use in industries where strength, durability, and corrosion resistance are essential. In the oil and gas sector, they are crucial for offshore platforms, subsea equipment, and pipelines. The chemical and petrochemical industries rely on them for pressure vessels, heat exchangers, and reactors, thanks to their resilience in corrosive environments. The marine and shipbuilding sectors favor these circles for propeller shafts, hull reinforcements, and desalination equipment. They are also utilized in the paper and pulp industries, construction, and power generation plants, ensuring reliable performance even in aggressive and high-stress conditions.
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