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UNS S32760 Super Duplex Steel Round Bars
680.0 INR/Kilograms
Product Details:
- Standard ASTM A276, ASTM A479, ASME SA276, ASME SA479
- Tolerance h9, h10, h11, h12, h13 or custom
- Technique Hot Rolled, Cold Drawn, Forged
- Grade UNS S32760 (F55)
- Material UNS S32760 Super Duplex Steel
- Processing Hot Rolled, Annealed, Pickled, Solution Annealed
- Type Round Bar
- Click to view more
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UNS S32760 Super Duplex Steel Round Bars Price And Quantity
- 680.0 INR/Kilograms
- 1 Kilograms
UNS S32760 Super Duplex Steel Round Bars Product Specifications
- UNS S32760 (F55)
- UNS S32760 Super Duplex Steel
- High strength corrosion resistant applications
- Chemical processing, Marine engineering, Oil & Gas industries, Desalination and Pulp & Paper industries
- Hot Rolled, Cold Drawn, Forged
- Round Bar
- Hot Rolled, Annealed, Pickled, Solution Annealed
- ASTM A276, ASTM A479, ASME SA276, ASME SA479
- Bright, Black, Polished, Peeled, Turned
- 5mm to 500mm
- h9, h10, h11, h12, h13 or custom
- 100mm to 6000mm (custom cut lengths available)
- Smooth, Clean, Free from scale
- 7.8 g/cm3
- Magnetic
- Solution Annealed
- High impact toughness at both room and sub-zero temperatures
- Excellent resistance to pitting, crevice and stress corrosion cracking
- 550 MPa min
- 290 HB max
- 25% min
- 750 MPa min
- Hot Rolled/Cold Worked & Peeled, Turned or Ground
Product Description
UNS S32760 (often referred to as F55 or Zeron 100 type) is an ultra-premium super duplex stainless steel specification. It features a balanced microstructural matrix of roughly 50% austenite and 50% ferrite.
When sourcing UNS S32760 round bars and rods, the alloy relies on engineered additions of tungsten (W) and copper (Cu) alongside a baseline of 25% chromium. This provides superb protection against sour gas, localized crevice pitting, and high-velocity erosion-corrosion.
1. Primary Manufacturing & Material Standards
To verify material integrity for safety-critical systems, ensure your bar stock references these core standards:
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ASTM A276 / ASME SA276: Covers general hot-finished or cold-finished wrought bars, including rounds, squares, and hexagons.
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ASTM A479 / ASME SA479: Controls bars explicitly designated for boilers, pressure vessels, and nuclear applications.
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ASTM A182 Grade F55: Standard for forged or hot-rolled components intended for heavy machinery and high-temperature systems.
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EN 10088-3 / WNr 1.4501: The direct European material standard equivalents.
2. Alloy Chemical Limits & Engineering Impact
The chemical window must be precisely managed during the mill run to prevent the formation of brittle secondary intermetallic elements (like sigma phase) during cooling:
| Element | Wt. % Limits | Engineering Impact |
| Chromium (Cr) | 24.0 26.0% | Essential backbone for passive oxide film development. |
| Molybdenum (Mo) | 3.0 4.0% | Resists localized pitting in high-temperature chloride brines. |
| Nickel (Ni) | 6.0 8.0% | Stabilizes the foundational austenitic matrix. |
| Tungsten (W) | 0.50 1.00% | Co-strengthens the passive layer alongside Molybdenum. |
| Copper (Cu) | 0.50 1.00% | Inhibits uniform corrosion in heavily reducing acids like sulfuric acid ($H_2SO_4$). |
| Nitrogen (N) | 0.20 0.30% | Enhances interstitial yield strength and pitting barriers. |
3. Guaranteed Mechanical Property Minimums
UNS S32760 yields twice the load-bearing capacity of standard 316L austenitic stainless steels, enabling engineers to decrease component thickness and total assembly weight:
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Tensile Strength ($R_m$): $ge 750 text{ MPa}$ ($109 text{ ksi}$)
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0.2% Proof Strength ($R_{p0.2}$): $ge 550 text{ MPa}$ ($80 text{ ksi}$)
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Elongation ($A$): $ge 25%$
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Max Hardness: $le 300 text{ HBW}$ or $28 text{ HRC}$ (The mandatory threshold required to comply with NACE MR0175 / ISO 15156 for oilfield downhole sour service).
4. Commercial Bar Stock & Sourcing Variants
Depending on your downstream CNC machining or cold-forming requirements, supply lines carry distinct dimensional and finish variations:
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Super Duplex S32760 Round Bar - Tradeindia: Engineered for reliable performance under high stress, offering a minimum yield strength of 550 MPa. It undergoes precise solution annealing and is ideal for marine engineering and desalination plants.
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Super Duplex F55 Stainless Steel Round Bar: Features a silver-toned finish with a high melting range of 15001550C for thermal applications. It maintains high mechanical robustness across challenging industrial settings.
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6mm To 600mm UNS S32760 Super Duplex Round Bars: Best suited for operations requiring severe sizing flexibility. Spans a vast spectrum from 6mm precision indicator rods up to 600mm heavy industrial machine billets.
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Exceptional Corrosion Resistance
UNS S32760 round bars are renowned for their excellent resistance against pitting, crevice, and stress corrosion cracking. This property makes them ideal for use in challenging environments, such as marine and chemical plants, where conventional stainless steels may fail. The high chromium, molybdenum, and tungsten content contributes significantly to their corrosion-resistant capabilities, extending equipment life and reducing maintenance costs.
Versatility in Industries and Applications
These super duplex steel round bars are engineered for versatility, catering to a wide array of industries. Their impressive combination of strength, impact toughness, and resistance to harsh chemicals renders them suitable for oil & gas platforms, desalination systems, and marine equipment. Customized dimensions and finishes allow for seamless integration into diverse fabrication projects, promoting reliability and adaptability.
Precision Manufacturing and Superior Finishes
Manufactured using advanced techniques like hot rolling, cold drawing, and forging, UNS S32760 round bars are available in polished, bright, black, peeled, turned, and ground finishes. Close tolerance standards (h9 to h13 or custom) ensure precise fit for critical applications. The solution annealing process and stringent quality checks ensure uniformity, clean surfaces, and freedom from scale for enhanced performance.
FAQ's of UNS S32760 Super Duplex Steel Round Bars:
Q: How does UNS S32760 Super Duplex Steel round bar benefit industries with corrosive environments?
A: UNS S32760 Super Duplex Steel round bars offer excellent resistance to pitting, crevice, and stress corrosion cracking, making them highly beneficial in industries like chemical processing, marine engineering, and desalination. Their superior corrosion resistance ensures extended service life and reduced maintenance even in the most aggressive settings.Q: What are the primary processes involved in manufacturing UNS S32760 round bars?
A: These round bars are manufactured using hot rolling, cold drawing, or forging techniques. After forming, they undergo solution annealing to enhance structural stability and corrosion resistance, followed by precision processing such as peeling, turning, or grinding to achieve clean, smooth surfaces.Q: When are UNS S32760 round bars recommended over traditional stainless steel bars?
A: UNS S32760 round bars are preferred over conventional stainless steel when exceptional strength, high impact toughness at low temperatures, and outstanding corrosion resistance are required. Applications include oil & gas components, marine hardware, or chemical processing equipment exposed to harsh environments.Q: Where can I find suppliers and manufacturers of UNS S32760 Super Duplex Steel round bars in India?
A: Numerous dealers, exporters, fabricators, manufacturers, producers, retailers, suppliers, and traders across India provide UNS S32760 round bars. These sources can offer customized lengths, diameters, and finishes as per project requirements.Q: What is the typical usage for UNS S32760 round bars in high-strength applications?
A: These round bars are commonly used in structural components, pump shafts, valves, and fasteners where both high mechanical strength and corrosion resistance are necessary. Industries such as oil & gas, pulp & paper, and desalination benefit the most from their robust properties.Q: How does the solution annealing process improve the performance of UNS S32760 round bars?
A: Solution annealing relieves internal stresses, improves ductility, and enhances corrosion resistance. This process ensures the bars maintain high impact toughness and structural integrity, even when exposed to fluctuating or sub-zero temperatures.Tell us about your requirement
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