Home > Duplex Steel > Duplex Steel S31803 Flanges
Barsham Nickel Alloys, which is a Doha, Qatar-based manufacturer and distributor, has expertise in delivering high-quality Duplex Steel S31803 Flanges. Characterized by excellent corrosion resistance, strength, and durability, the flanges find applications in various challenging industrial conditions, such as chemical processing, oil and gas, and sea environments. With a guarantee of quality and customer satisfaction, Barsham Nickel Alloys ensures all products conform to international standards, offering consistent solutions for customers across the region. Trust Barsham Nickel Alloys for high-quality Duplex Steel S31803 Flanges that exceed performance and longevity.
Duplex Steel S31803 Flanges have better resistance to corrosion, especially to stress corrosion cracking in chloride environments, making them most suitable for unfriendly environments. They have the ability to mix high strength and high toughness properties, leading to low weight with improved durability. They also demonstrate good weldability and pitting as well as crevice corrosion resistance. The dual-phase structure of these flanges balances austenitic as well as ferritic steel strengths to deliver very high performance under chemical processing, oil and gas, and in marine environments.
| 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 | 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 |
Barsham Nickel Alloys is the biggest manufacturer and supplier of Duplex Steel S31803 Flanges in Doha, Qatar. With high-quality, long-lasting, and corrosion-resistant products. Precision and reliability are ensured through our advanced manufacturing technology. We maintain industry standards and supply products on time with excellent customer service. Focused on quality and innovation, we supply reliable solutions to address the changing requirements of our customers.
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Duplex Steel S31803 Flanges are used extensively in high-strength and corrosion-resistant industries. They find application in the petrochemical and chemical processing industries for dealing with corrosive and acidic fluids. They are also applied in the oil and gas industry for offshore platforms and pipelines, where resistance to chloride stress corrosion is important. They also have uses in marine environments, desalination plants, and power generation, where their toughness and durability are essential for long-term performance.