Home > Duplex Steel > Duplex Steel Flanges
Sayam Nickel Alloys is a trusted manufacturer and supplier of Duplex Steel Flanges in Hyderabad, offering high-performance solutions for demanding industrial applications. Manufactured using advanced forging and machining processes, these flanges provide excellent dimensional accuracy, strength, and corrosion resistance. Sayam Nickel Alloys follows strict quality standards and international specifications to ensure consistent quality and reliable performance. Their duplex steel flanges are widely used in industries where durability, pressure handling, and resistance to aggressive environments are essential.
| Specifications | ASTM A182 / ASME SA182 |
| Size | 1/8″ NB TO 48″ NB |
| Standards | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Grade | Duplex Steel Flanges |
|---|---|
| C | 0.030 max |
| Mn | 2.00 max |
| Si | 1.00 max |
| P | 0.030 max |
| S | 0.020 max |
| Cr | 22.0 – 23.0 |
| Mo | 3.0 – 3.5 |
| Ni | 4.50 – 6.50 |
| N | 0.14 – 0.20 |
| Fe | 63.72 min |
| Duplex Steel | Flanges |
|---|---|
| Density (g/cm 3) | 7.805 |
| Density (lb/in 3) | 0.285 |
| Melting Point (°C) | 1420 – 1465 |
| Melting Point (°F) | 2588 – 2669 |
Duplex Steel Flanges are made from alloys featuring a balanced austenitic and ferritic microstructure. The composition typically includes chromium, nickel, molybdenum, and nitrogen, which enhance corrosion resistance and mechanical strength. High chromium and molybdenum content improve resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, duplex steel flanges offer high yield strength, excellent tensile strength, and good toughness. These properties allow them to withstand high pressure and harsh operating conditions.
Contact us to get a quick quote for your requirement.
Duplex Steel Flanges are widely used in piping systems across oil and gas, petrochemical, chemical processing, and power generation industries. Common applications include offshore platforms, marine systems, desalination plants, heat exchangers, and pressure vessels. Due to their excellent resistance to chlorides and corrosive media, they are ideal for seawater and chemical handling systems. Duplex steel flanges are also used in structural and process piping where strength, leak-proof connections, and long service life are critical.
