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Super Duplex Steel S32750 Round Bar is a premium-grade alloy known for its outstanding combination of high strength and superior corrosion resistance. It features a mixed microstructure of austenite and ferrite, offering excellent mechanical properties and resistance to stress corrosion cracking. Super Duplex Steel S32750 Round Bar is designed to perform in harsh environments, including marine and chemical industries. It retains exceptional toughness and durability even under high pressure and temperature. This alloy is ideal for applications demanding both performance and longevity.
The chemical composition of Super Duplex Steel S32750 Round Bar includes significant amounts of chromium, molybdenum, and nitrogen, which enhance its resistance to pitting and crevice corrosion. The high chromium and nitrogen content provides excellent protection in chloride-containing environments. Super Duplex Steel S32750 Round Bar performs efficiently in seawater, acidic, and alkaline conditions. Its strong corrosion resistance makes it a top choice for offshore and subsea applications. This material offers a balance between mechanical strength and corrosion resistance, ensuring long service life.
Super Duplex Steel S32750 Round Bar offers nearly twice the strength of standard austenitic stainless steels, which allows for lighter and more compact component designs. It maintains high ductility and impact resistance even at sub-zero temperatures. Super Duplex Steel S32750 Round Bar is highly resistant to fatigue and erosion, making it suitable for dynamic load-bearing applications. It is frequently used in the production of pumps, shafts, valves, and heat exchangers. Its combination of toughness and corrosion resistance enhances operational reliability and safety.
This alloy demonstrates excellent resistance to corrosion in seawater and aggressive chemical media, which makes Super Duplex Steel S32750 Round Bar ideal for use in marine and chemical processing environments. It resists pitting, crevice corrosion, and chloride stress corrosion cracking, even at elevated temperatures. Super Duplex Steel S32750 Round Bar also offers good weldability and machinability with proper techniques. Its low thermal expansion and high thermal conductivity improve performance under varying thermal conditions. These properties make it a versatile and dependable choice for industrial applications.
Super Duplex Steel S32750 Round Bar is specifically developed to perform under extreme conditions such as those found in oil & gas exploration and desalination plants. It offers excellent resistance to hydrogen sulfide and other harsh chemicals, making it suitable for sour gas environments. The alloy’s high tensile strength allows it to endure heavy mechanical loads without deformation. Super Duplex Steel S32750 Round Bar maintains dimensional accuracy and surface integrity over extended service periods. Its ability to resist wear and corrosion reduces maintenance and replacement costs.
Industries such as petrochemical, power generation, paper & pulp, and marine engineering rely on Super Duplex Steel S32750 Round Bar for its durability and versatility. It is commonly used in structural frameworks, fasteners, flanges, and mechanical components exposed to corrosive atmospheres. The alloy’s combination of superior mechanical strength and corrosion resistance ensures long-term reliability. Super Duplex Steel S32750 Round Bar delivers excellent performance in both fresh and seawater applications. Its balance of performance and economy makes it a practical solution for industrial engineers.
In conclusion, Super Duplex Steel S32750 Round Bar is an advanced material that excels in providing high strength, excellent corrosion resistance, and superior durability. It is an ideal choice for industries requiring reliable performance in aggressive environments. Super Duplex Steel S32750 Round Bar offers a cost-effective alternative to more expensive alloys while maintaining top-tier mechanical properties. Its ability to perform in high-stress, corrosive conditions ensures long-lasting functionality. Overall, it remains one of the most trusted materials for demanding engineering and industrial applications.
Specification Table
| Property | Specification |
|---|---|
| Material Name | Super Duplex Steel S32750 Round Bar |
| Grade | S32750 / UNS S32750 / ASTM A182 |
| Type | Round Bar / Rod |
| Diameter Range | 6 mm – 200 mm (or as per customer requirement) |
| Length | 1 m – 6 m standard, custom lengths available |
| Surface Finish | Hot Rolled (HR), Cold Rolled (CR), Pickled & Passivated |
| Standard | ASTM A182, ASME SA182, UNS S32750 |
| Density | 8.0 g/cm³ approx. |
| Applications | Chemical processing, Oil & Gas, Marine, Pulp & Paper, Offshore platforms |
| Certification | EN10204 3.1 / Mill Test Certificate (MTC) |
Chemical Composition (Typical ranges for SSS32750)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.8 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.01 |
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 6.0 – 8.0 |
| Molybdenum (Mo) | 3.0 – 5.0 |
| Nitrogen (N) | 0.20 – 0.30 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value | Unit |
|---|---|---|
| Yield Strength (0.2% offset) | 520 – 680 | MPa |
| Tensile Strength | 800 – 1000 | MPa |
| Elongation (A5) | 25 – 35 | % |
| Hardness (Brinell) | ≤ 320 | HB |
| Impact Toughness (Charpy V-notch) | > 100 | J at 0°C |
| Modulus of Elasticity | 200 | GPa |
| Density | 8.0 | g/cm³ |
| Maximum Service Temperature | 300 | °C |
Equivalent S32750s
| Standard | Equivalent Grade |
|---|---|
| UNS | S32750 |
| EN / DIN | 1.4410 / X2CrNiMoN25-7-4 |
| ASTM / ASME | A182 F53 |
| JIS | SUS329J4L |
| BS | EN 1.4410 / BS 32750 |
| Other Designations | SDSS 2507 |
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.
| Diameter (mm) | Weight per Meter (kg/m) |
|---|---|
| 6 | 0.226 |
| 8 | 0.401 |
| 10 | 0.617 |
| 12 | 0.888 |
| 16 | 1.578 |
| 20 | 2.467 |
| 25 | 3.854 |
| 32 | 6.313 |
| 40 | 9.869 |
| 50 | 15.42 |
| 60 | 22.21 |
| 80 | 39.48 |
| 100 | 61.65 |
| 120 | 88.13 |
| 150 | 137.4 |
Types Of Super Duplex Steel S32750 Round Bars and Tubes
Stainless Steel Round Bar
Monel 400 K400 Round Bar
Hastelloy Round Bar
Inconel 600 Round Bar
Nickel Alloy Round Bar
Super Duplex Round Bar
Monel K500 Round Bar
Inconel 625 Round Bar
Frequently Asked Questions (FAQ)
What is Super Duplex Steel S32750 Round Bar?
Super Duplex Steel S32750 Round Bar is a high-strength, corrosion-resistant stainless steel alloy used in harsh environments, including chemical processing, oil & gas, and marine applications.
What are the key chemical elements in S32750?
S32750 contains Chromium (24–26%), Nickel (6–8%), Molybdenum (3–5%), Nitrogen (0.2–0.3%), with Iron as the balance. It also has low Carbon, Manganese, Silicon, Phosphorus, and Sulfur levels.
What are the mechanical properties of S32750 Round Bar?
It has a tensile strength of 800–1000 MPa, yield strength of 520–680 MPa, elongation of 25–35%, Brinell hardness up to 320 HB, and excellent impact toughness (>100 J at 0°C).
What are the common applications of S32750?
S32750 Round Bars are used in chemical processing, petrochemical, offshore and marine industries, pulp & paper, and high-pressure equipment due to their high strength and corrosion resistance.
What standards does S32750 Round Bar comply with?
It complies with ASTM A182, ASME SA182, UNS S32750, EN 1.4410, BS 32750, and JIS SUS329J4L standards.
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