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The S32760 Hex Nut (also known as Super Duplex F55 Nut, W.Nr 1.4501) is a high-strength, corrosion-resistant fastener designed for critical applications in power generation, water treatment, and chemical processing. Compliant with DIN934, ISO4032, ASME B18.2.2, and JIS B1180 standards, it is crafted from super duplex stainless steel S32760—an alloy combining austenitic and ferritic microstructures for exceptional strength and resistance to pitting/crevice corrosion. With a size range of M5 to M100 (1/4” to 4”) and Grade 80 strength (tensile strength ≥ 820 N/mm²), this nut pairs perfectly with S32760 bolts or studs to form reliable connections. We maintain a large stock (100,000,000 pieces) for quick delivery and have a proven track record: our S32760 fasteners have been used in Oman, India, and Israel power plant cooling towers since 2010.
S32760 composition: 24-26% Cr, 6.0-8.0% Ni, 3.0-4.0% Mo, 0.2-0.3% N, and 0.5-1.0% Cu/W.
Offers 2x the corrosion resistance of standard duplex stainless steel (e.g., 2205) and higher strength than austenitic stainless steel (e.g., SS316).
Grade 80 strength: Tensile strength (Rm) ≥ 820 N/mm², yield strength (RP0.2) ≥ 550 N/mm², and elongation (A5) ≥ 25%.
Withstands high pressure and vibration, making it suitable for power plant cooling towers and water treatment pipelines.
Sizes: M5 to M100 (1/4” to 4”), compatible with most industrial bolts and studs.
Complies with global standards (DIN934, ISO4032, etc.), ensuring seamless integration into international projects.
Track record: Used in Oman (2010, 2016, 2024), India (2017), Israel (2020), and Mexico (2024) power plant cooling towers—validating reliability in humid, chlorinated environments.
Custom marking: “HT&FST+Grade” as default; brand logos or part numbers can be added upon request.
EN10204-3.1B certified, with full traceability of material and production processes.
Power Plant Cooling Towers: Paired with S32760 bolts in cooling systems (e.g., Oman 2010/2016/2024, India 2017, Israel 2020 projects). Resists chlorinated water and high humidity, preventing leaks and equipment downtime—thanks to 24–26% Cr and 3.0–4.0% Mo in S32760 alloy.
Seawater Desalination Plants: Secures desalination pipelines and filter housings. Resists pitting corrosion from saltwater and brine, ensuring long-term performance in coastal water treatment facilities.
Chemical & Petrochemical Equipment: Fastens storage tanks and pipeline flanges in chemical plants and refineries. Withstands acids, alkalis, and hydrocarbons, leveraging Grade 80 strength (550 N/mm² yield) for high-pressure applications.
Mining Industry: Suitable for mineral processing equipment (e.g., ore crushers, slurry pipelines). Resists abrasive media and corrosive mining chemicals, reducing maintenance costs for heavy-duty operations.
Name | S32760 Hex Nut |
Standard | DIN934,ISO4032,,ASME B18.2.2,JIS B1180 |
Size Range | M5-M100 or 1/4-4” |
Finish | Bright&Clean |
Marking | HT&FST+Grade or customization |
Material | Duplex F55 , Super duplex S32760,1.4501 |
Grade | Grade 80 |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
Super Duplex S32760
| UNS | ID | W.Nr |
| S32760 | F55 | 1.4501 |
Chemical composition of duplex stainless steel F55 (S32760/1.4501) nut
| Alloy | % | Ni | Cr | Mo | N | C | Mn | Si | S | P | Cu | W |
| F55 | Min. | 6.0 | 24 | 3.0 | 0.2 | 0.5 | 0.5 | |||||
| Max. | 8.0 | 26 | 4.0 | 0.3 | 0.03 | 1.0 | 1.0 | 0.01 | 0.03 | 1.0 | 1.0 |
Minimum mechanical properties of duplex stainless steel F55 (S32760/1.4501) nut alloy at room temperature
Tensile strength Rm N/mm² | Yield strength RP0.2 N/mm² | Elongation rate A5% |
| 820 | 550 | 25 |
The S32760 Hex Nut (also known as Super Duplex F55 Nut, W.Nr 1.4501) is a high-strength, corrosion-resistant fastener designed for critical applications in power generation, water treatment, and chemical processing. Compliant with DIN934, ISO4032, ASME B18.2.2, and JIS B1180 standards, it is crafted from super duplex stainless steel S32760—an alloy combining austenitic and ferritic microstructures for exceptional strength and resistance to pitting/crevice corrosion. With a size range of M5 to M100 (1/4” to 4”) and Grade 80 strength (tensile strength ≥ 820 N/mm²), this nut pairs perfectly with S32760 bolts or studs to form reliable connections. We maintain a large stock (100,000,000 pieces) for quick delivery and have a proven track record: our S32760 fasteners have been used in Oman, India, and Israel power plant cooling towers since 2010.
S32760 composition: 24-26% Cr, 6.0-8.0% Ni, 3.0-4.0% Mo, 0.2-0.3% N, and 0.5-1.0% Cu/W.
Offers 2x the corrosion resistance of standard duplex stainless steel (e.g., 2205) and higher strength than austenitic stainless steel (e.g., SS316).
Grade 80 strength: Tensile strength (Rm) ≥ 820 N/mm², yield strength (RP0.2) ≥ 550 N/mm², and elongation (A5) ≥ 25%.
Withstands high pressure and vibration, making it suitable for power plant cooling towers and water treatment pipelines.
Sizes: M5 to M100 (1/4” to 4”), compatible with most industrial bolts and studs.
Complies with global standards (DIN934, ISO4032, etc.), ensuring seamless integration into international projects.
Track record: Used in Oman (2010, 2016, 2024), India (2017), Israel (2020), and Mexico (2024) power plant cooling towers—validating reliability in humid, chlorinated environments.
Custom marking: “HT&FST+Grade” as default; brand logos or part numbers can be added upon request.
EN10204-3.1B certified, with full traceability of material and production processes.
Power Plant Cooling Towers: Paired with S32760 bolts in cooling systems (e.g., Oman 2010/2016/2024, India 2017, Israel 2020 projects). Resists chlorinated water and high humidity, preventing leaks and equipment downtime—thanks to 24–26% Cr and 3.0–4.0% Mo in S32760 alloy.
Seawater Desalination Plants: Secures desalination pipelines and filter housings. Resists pitting corrosion from saltwater and brine, ensuring long-term performance in coastal water treatment facilities.
Chemical & Petrochemical Equipment: Fastens storage tanks and pipeline flanges in chemical plants and refineries. Withstands acids, alkalis, and hydrocarbons, leveraging Grade 80 strength (550 N/mm² yield) for high-pressure applications.
Mining Industry: Suitable for mineral processing equipment (e.g., ore crushers, slurry pipelines). Resists abrasive media and corrosive mining chemicals, reducing maintenance costs for heavy-duty operations.
Name | S32760 Hex Nut |
Standard | DIN934,ISO4032,,ASME B18.2.2,JIS B1180 |
Size Range | M5-M100 or 1/4-4” |
Finish | Bright&Clean |
Marking | HT&FST+Grade or customization |
Material | Duplex F55 , Super duplex S32760,1.4501 |
Grade | Grade 80 |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
Super Duplex S32760
| UNS | ID | W.Nr |
| S32760 | F55 | 1.4501 |
Chemical composition of duplex stainless steel F55 (S32760/1.4501) nut
| Alloy | % | Ni | Cr | Mo | N | C | Mn | Si | S | P | Cu | W |
| F55 | Min. | 6.0 | 24 | 3.0 | 0.2 | 0.5 | 0.5 | |||||
| Max. | 8.0 | 26 | 4.0 | 0.3 | 0.03 | 1.0 | 1.0 | 0.01 | 0.03 | 1.0 | 1.0 |
Minimum mechanical properties of duplex stainless steel F55 (S32760/1.4501) nut alloy at room temperature
Tensile strength Rm N/mm² | Yield strength RP0.2 N/mm² | Elongation rate A5% |
| 820 | 550 | 25 |
