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Super Duplex Steel S32750 Pipe & Fittings is a high-performance stainless steel alloy known for its exceptional corrosion resistance and superior mechanical properties. Combining the strength of duplex stainless steel with enhanced resistance to chloride stress corrosion, S32750 pipes and Fittingss are ideal for harsh industrial environments. Sumer Metal Industries manufactures and supplies these premium-quality products to clients across the UAE, Saudi Arabia, Kuwait, Qatar, Bahrain, and Oman.
S32750 Super Duplex Steel Pipes & Fittingss offer a unique combination of high tensile strength, toughness, and resistance to pitting, crevice, and stress corrosion. These properties make them suitable for demanding applications in chemical processing, oil and gas industries, desalination plants, and marine environments. The alloy’s superior durability ensures long-term reliability and reduces maintenance costs for industrial systems.
Super Duplex Steel S32750 pipes and fittings are high-performance stainless steel alloys engineered for extreme corrosion resistance and high mechanical strength. They are widely used in chemical processing, petrochemical, offshore oil and gas, and marine industries. These materials are specifically designed to perform in chloride-rich, high-temperature, and high-pressure environments.
S32750 is a super duplex stainless steel composed of approximately 25–26% chromium, 6–7% nickel, 3–4% molybdenum, and 0.2–0.3% nitrogen. This unique composition enhances pitting, crevice corrosion, and stress corrosion cracking resistance while providing excellent strength and toughness.
Our S32750 pipes and Fittingss are widely used in a variety of industrial sectors, including offshore oil rigs, petrochemical refineries, heat exchangers, and seawater equipment. Their resistance to chloride attack and high strength-to-weight ratio make them perfect for both onshore and offshore projects. Engineers and designers prefer Super Duplex Steel S32750 for pipelines and structures exposed to aggressive chemical and marine conditions.
Sumer Metal Industries ensures that every S32750 Super Duplex Steel Pipe & Fittings meets international standards such as ASTM A790 and EN 10222. Using advanced manufacturing techniques and stringent quality checks, we provide pipes and Fittingss with precise dimensions, superior surface finish, and consistent performance. Our commitment to quality ensures reliability in even the most challenging industrial applications.
Super Duplex S32750 fittings and pipes exhibit high tensile strength of 800–950 MPa and yield strength around 550–750 MPa. Elongation typically ranges from 20–25%, providing both toughness and durability. These mechanical properties make them ideal for high-pressure and high-stress applications in aggressive environments.
S32750 pipes and fittings are supplied in solution-annealed and quenched conditions to achieve optimal corrosion resistance and mechanical strength. The material can be welded using standard stainless steel welding techniques, including GTAW and SMAW. Post-weld heat treatment is recommended in some cases to maintain corrosion resistance.
Specification Table
| Product | Super Duplex Steel S32750 Pipe & Fittings |
|---|---|
| Grade | UNS S32750 / SAF 2507 |
| Standards |
ASTM A790 / A928 – Pipes ASTM A815 – Butt-Weld Fittings ASTM A182 – Forged Fittings & Flanges ASME / DIN / EN / ISO equivalents available |
| Material Type | Super Duplex Stainless Steel (Austenitic-Ferritic) |
| Density | 7.8 g/cm³ |
| Melting Point | 1350 – 1400°C (2460 – 2550°F) |
| Tensile Strength (min) | 795 MPa (115 ksi) |
| Yield Strength (0.2% Proof) | 550 MPa (80 ksi) |
| Elongation (min) | 15% |
| Hardness | ≤ 310 HB |
| Corrosion Resistance | Excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking |
| Temperature Range | -50°C to 300°C (-58°F to 572°F) |
| Available Forms |
Seamless & Welded Pipes Butt-Weld Fittings (Elbow, Tee, Reducer, Cap) Forged Fittings (Socket Weld & Threaded) Flanges & Custom Fabrications |
| Applications | Oil & Gas, Offshore Platforms, Seawater Desalination, Chemical Processing, Pulp & Paper, Marine Engineering, and Heat Exchangers. |
Chemical Composition (Typical ranges for SSS32750)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 6.0 – 8.0 |
| Molybdenum (Mo) | 3.0 – 5.0 |
| Nitrogen (N) | 0.24 – 0.32 |
| Manganese (Mn) | ≤ 1.20 |
| Silicon (Si) | ≤ 0.80 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.020 |
| Carbon (C) | ≤ 0.030 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength (min) | 795 MPa | 115 ksi |
| Yield Strength (0.2% Proof, min) | 550 MPa | 80 ksi |
| Elongation (min) | 15% | 15% |
| Hardness (max) | 310 HB | 310 HB |
| Impact Toughness (Charpy V-Notch) | ≥ 100 J @ -46°C | ≥ 74 ft·lbf @ -51°F |
| Modulus of Elasticity | 200 GPa | 29,000 ksi |
| Density | 7.8 g/cm³ | 0.282 lb/in³ |
| Melting Range | 1350 – 1400°C | 2460 – 2550°F |
Equivalent Grades
| STANDARD | GRADE |
|---|---|
| UNS | S32750 |
| AFNOR | Z3CND25.06Az |
| EN / DIN | 1.4410 |
| BS | 2507 |
| ASTM / ASME | SAF 2507 / A790 / A182 / A815 |
| JIS | SUS 2507 |
| GOST | 08Ch22N6T |
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 Pipe Size (NPS) | Outside Diameter (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 1.27 |
| 3/4" | 26.7 | 2.87 | 1.68 |
| 1" | 33.4 | 3.38 | 2.45 |
| 1 1/2" | 48.3 | 3.68 | 3.63 |
| 2" | 60.3 | 3.91 | 5.44 |
| 3" | 88.9 | 5.49 | 10.25 |
| 4" | 114.3 | 6.02 | 14.90 |
| 6" | 168.3 | 7.11 | 28.26 |
| 8" | 219.1 | 8.18 | 41.64 |
| 10" | 273.1 | 9.27 | 59.11 |
| 12" | 323.9 | 9.53 | 71.86 |
Types Of Super Duplex Steel S32750 Pipe & Fittingss and Fittingss
SS S32750 Seamless Pipe
SS S32750 Welded Pipe
SS S32750 ERW Pipe
SS S32750S EFW Pipe
Super Duplex Steel S32750S Seamless Fittings
S32750H Super Duplex Steel Welded Fittings
S32750 Super Duplex Steel Capillary Fittings
S32750H Super Duplex Steel Heat Exchanger Fittingss
Frequently Asked Questions (FAQ)
Q1. What is Super Duplex Steel S32750?
Super Duplex Steel S32750 (UNS S32750 / SAF 2507) is a high-alloy duplex stainless steel with a mixed austenitic-ferritic microstructure. It provides excellent strength, superior corrosion resistance, and exceptional resistance to pitting, crevice, and chloride stress corrosion cracking.
Q2. What are the key advantages of Super Duplex S32750 pipe and fittings?
The key benefits include high tensile and yield strength, superior resistance to chloride-rich environments, excellent weldability, good fatigue strength, and reduced weight compared to traditional austenitic stainless steels.
Q3. What industries commonly use Super Duplex S32750?
Super Duplex S32750 is widely used in industries such as oil & gas, chemical processing, petrochemical, marine engineering, desalination plants, offshore platforms, and pulp & paper due to its outstanding performance in corrosive and high-pressure environments.
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