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Al Shakru Sheets and Plates distinguishes itself as a first-rate manufacturer and supplier of Duplex Steel S31803 Circles straight from Dubai, UAE . We take pride in delivering high-quality duplex stainless steel products that are renowned for their outstanding corrosion resistance, strength, and durability. Our Duplex Steel S31803 Circles are made with precision, using state-of-the-art production methods and stringent quality control to ensure uniform dimensions, a smooth surface finish, and reliable performance. These circles are ideal for numerous applications across the chemical, marine, and industrial sectors, featuring superb resistance to pitting, crevice corrosion, and stress corrosion cracking. Al Shakru Sheets and Plates serves a broad spectrum of industries, including oil and gas, chemical processing, marine engineering, and heavy manufacturing, supplying premium duplex steel solutions.
Duplex Steel S31803 Circles feature a well-proportioned austenitic (≈50%) and ferritic (≈50%) stainless steel microstructure , fortified with chromium (≈22%), nickel (≈5–6%), molybdenum (≈3%), nitrogen, and trace elements . They provide notable tensile strength (≈650–800 MPa) and yield strength (≈450–550 MPa) , together with superb ductility and outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking . This makes them an excellent option for demanding industrial and marine settings.
| 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 supply products accompanied by both mill test certificates and third-party test certificates, guaranteeing the highest standards of quality and compliance.
Al Shakru Sheets and Plates, located in Dubai, UAE, is a top supplier and stockist of premium metal products, such as Sheets, Plates, Coils, Foils, Angles, Channels, Circles, and Slitting Coils, all provided with outstanding service and customized to fulfill our customers specific needs. With an emphasis on supplying superior products, we serve a broad array of industries, offering dependable solutions for varied applications. Our large inventory features Recognized for our distinctive finishing methods and dedication to quality. We are committed to guaranteeing customer satisfaction through reliable service and first-rate products.
Duplex Steel S31803 CirclesDuplex S31803 Circles provide numerous benefits, making them ideal for industrial applications. Their dual-phase microstructure delivers outstanding strength and toughness, surpassing many standard stainless steels. These circles offer excellent corrosion resistance, particularly against pitting, crevice corrosion, and stress corrosion cracking, even in demanding environments. They demonstrate superior thermal conductivity and low thermal expansion, guaranteeing stability during temperature variations. Thanks to their high weldability and machinability, they are well-suited for intricate fabrication. Furthermore, Duplex S31803 Circles deliver a cost-efficient option through reduced material thickness without sacrificing durability and performance.
Yes,we offer custom sizes for Duplex Steel S31803 Circle to fit particular project needs. Our team at Al Shakru Sheets and Plates is committed to delivering customized solutions for all your requirements. For further information, reach out to us at sales@alshakruplates.ae.
Duplex Steel S31803 Circles are widely applied in flanges, rings, gaskets, and structural components owing to their superior strength, resistance to corrosion, and dimensional stability. Within industrial and fabrication settings , they serve in pressure vessels, chemical processing equipment, marine assemblies, and precision-engineered machinery parts , where toughness, dependability, and enduring performance matter greatly. Additionally, these circles play a key role in offshore, oil and gas, and renewable energy projects , guaranteeing operational efficiency, minimal maintenance, and an extended service life. Their distinctive combination of mechanical strength, corrosion resistance, and versatility establishes Duplex Steel S31803 Circles as an outstanding option for a wide range of applications.
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