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Super Duplex Steel S32750 Flanges are engineered for superior performance in highly corrosive environments. Designed to offer excellent resistance against pitting, crevice corrosion, and stress corrosion cracking, these flanges are ideal for critical industrial applications.
Manufactured according to international standards such as ASTM A182 F55, S32750 flanges provide a perfect combination of high strength and exceptional durability. They are widely used in chemical, petrochemical, and offshore industries where reliability is crucial.
The chemical composition of Super Duplex Steel S32750 ensures superior corrosion resistance. With high chromium, molybdenum, and nitrogen content, these flanges maintain stability and resist localized corrosion in harsh environments, including seawater and acidic conditions.
Super Duplex Steel S32750 Flanges come in various types, including weld neck, slip-on, blind, socket weld, and threaded flanges, catering to diverse piping system requirements. Each type is precision-engineered to ensure proper alignment and leak-proof connections.
Mechanical properties of S32750 flanges include high tensile strength, yield strength, and hardness. These properties make them suitable for high-pressure and high-temperature applications, ensuring safety and long-term service life.
The versatility of S32750 flanges allows them to be used in oil and gas exploration, desalination plants, chemical processing units, and marine engineering. Their durability and corrosion resistance reduce maintenance costs and enhance operational efficiency.
These flanges are compatible with a range of pipe materials and are designed to meet stringent dimensional and weight standards. They are easy to install and provide a reliable sealing solution in challenging operational conditions.
Super Duplex Steel S32750 Flanges undergo rigorous quality control processes, including dimensional inspection, chemical analysis, and mechanical testing. This ensures compliance with global standards and guarantees performance under extreme conditions.
Customization options are available for S32750 flanges, including different sizes, pressure ratings, and finishes. This flexibility allows engineers to select the most suitable flanges for their specific industrial applications.
Specification Table
| Standard | Grade | Type | Size Range | Pressure Rating | End Connection |
|---|---|---|---|---|---|
| ASTM / ASME | S32750 / UNS S32750 | Weld Neck, Slip-On, Blind, Socket Weld, Threaded | 1/2" to 48" | 150# to 2500# | RF (Raised Face), RTJ (Ring Type Joint), FF (Flat Face) |
Chemical Composition (Typical ranges for SSS32750)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 24 – 26 |
| Nickel (Ni) | 6 – 8 |
| Molybdenum (Mo) | 3 – 5 |
| Manganese (Mn) | ≤ 2 |
| Silicon (Si) | ≤ 1 |
| Nitrogen (N) | 0.24 – 0.32 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength (UTS) | 750 – 900 | MPa |
| Yield Strength (0.2% offset) | 550 – 700 | MPa |
| Elongation (in 50mm) | 25 – 35 | % |
| Hardness (Brinell) | ≤ 300 | HB |
| Impact Toughness (Charpy V-Notch) | ≥ 100 | J @ -46°C |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| UNS | S32750 |
| EN / DIN | 1.4410 / F55 |
| ASTM / ASME | A182 F55 |
| JIS | –– (No direct equivalent) |
| BS | EN 10222-5 F55 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Size (NPS) | Outside Diameter (OD) mm | Bolt Circle Diameter (BCD) mm | No. of Bolts | Bolt Size | Thickness / Height (mm) | Weight (kg) |
|---|---|---|---|---|---|---|
| 1/2" | 60.3 | 95 | 4 | M16 | 16 | 1.2 |
| 1" | 88.9 | 125 | 4 | M16 | 18 | 2.5 |
| 2" | 114.3 | 165 | 4 | M16 | 20 | 4.5 |
| 4" | 219.1 | 280 | 8 | M20 | 23 | 12.0 |
| 6" | 323.9 | 405 | 8 | M22 | 25 | 22.5 |
| 8" | 406.4 | 480 | 8 | M24 | 27 | 35.0 |
| 10" | 508.0 | 585 | 12 | M24 | 30 | 55.0 |
| 12" | 609.6 | 705 | 12 | M27 | 32 | 80.0 |
Common Types Of Flangess
Ring Flanges
Type of Flanges
General Flanges
Stainless Steel Pipe Flanges
ASME B16.5 Flanges
Stainless Steel Flanges
Frequently Asked Questions (FAQ)
What is Super Duplex Steel S32750 Flange?
Super Duplex Steel S32750 Flanges are high-performance stainless steel flanges known for their superior corrosion resistance, high strength, and durability in harsh industrial environments. They are widely used in oil & gas, chemical, and marine industries.
What are the standards for S32750 Flanges?
S32750 Flanges are manufactured according to ASTM A182 F55 standards and are also equivalent to UNS S32750, EN 1.4410, and DIN F55. They are available in various types including weld neck, slip-on, blind, socket weld, and threaded.
What is the chemical composition of S32750 Flanges?
The chemical composition typically includes: Carbon ≤ 0.03%, Chromium 24–26%, Nickel 6–8%, Molybdenum 3–5%, Manganese ≤ 2%, Silicon ≤ 1%, Nitrogen 0.24–0.32%, and balance Iron.
What are the mechanical properties of S32750 Flanges?
S32750 Flanges have high tensile strength (750–900 MPa), yield strength (550–700 MPa), elongation of 25–35%, hardness up to 300 HB, and impact toughness ≥ 100 J @ -46°C.
What industries use Super Duplex S32750 Flanges?
They are commonly used in oil & gas, chemical processing, desalination plants, marine engineering, and offshore applications due to their resistance to corrosion and high pressure.
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