Duplex Steel F51 / 31803/ 1.4462 Fasteners are becoming increasingly popular in several industries worldwide, such as the chemical and petrochemical, oil and gas, and marine industries. It is because of its excellent strength, resistance, and durability, making it an ideal material for fasteners. Duplex Steel F51/31803/1.4462 Fasteners have a unique combination of corrosion resistance, strength, and durability, making them ideal for use in demanding environments.
Duplex Steel F51 Fasteners Features
Duplex Steel F51 fasteners, also known as SAF 2205 fasteners, are duplex stainless steel fasteners that are highly resistant to corrosion and have high strength. They are composed of ferritic and austenitic stainless steel with higher chromium, molybdenum, and nickel content than standard stainless steel. Due to its structure, Duplex Steel F51 fasteners resist corrosion, cracking, and pitting from various chemicals, making them ideal for use in a harsh environment. Their features make them popular in the chemical and petrochemical industry, where they are used in pumps, valves, heat exchangers, and other equipment that require extreme resistance to corrosive environments.
Table Content
Duplex Steel 31803 Fasteners Corrosion Resistance
Duplex Steel 31803 Fasteners are duplex stainless steel fasteners that have improved corrosion resistance over standard austenitic stainless steel. The 31803 fasteners have higher molybdenum, nitrogen, and chromium content, which makes them more resistant to various types of corrosion, such as crevice corrosion, stress corrosion cracking, and pitting. The combination of high strength and excellent corrosion resistance makes them preferred in the offshore and marine industries for fastening saltwater pipelines, risers, and offshore platform structures, among other applications.
Duplex Steel 1.4462 Fasteners Chemical Composition
Duplex Steel 1.4462 Fasteners are duplex steel fasteners with a higher nickel and chromium content, providing superior strength and corrosion resistance. Their chemical composition includes 22% chromium, 5-6% nickel, 3% molybdenum, 0.2% nitrogen, and trace amounts of copper, silicon, and sulfur. The 1.4462 fasteners are resistant to various forms of corrosion, stress cracking, and erosion, making them ideal for use in heat exchangers, manifolds, and piping systems across several industries, including petrochemical, pulp and paper, and pharmaceuticals.
Duplex Steel F51 Fasteners Physical & Mechanical Properties
Duplex Steel F51 fasteners have excellent mechanical and physical properties, making them highly sought after in the industrial sector. They have a high yield strength of up to 80kSI and a tensile strength of up to 116kSI, making them ideal for use in environments that require extreme strength and toughness. They also have outstanding workability, weldability, and formability, which enable them to be used in custom applications that demand specific properties. These fasteners have excellent fatigue strength, thermal conductivity, and electrical conductivity, making them an excellent choice for use across several industries.
Forging or Forming & Machining
Hole Drilling & Surface Treatment
Quality Control & Marking, Identification
Final Inspection and Packaging
| Standard | ASTM A182 / ASME SA182 |
| Bolt / Screw Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Nuts Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Washers Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Machine Screws Size | M1.6 – M12 |
| Self Tapping Screw Size | No.2 – No. 14 |
| Length | 3 mm to 200 mm |
| Threads | UNF, BSW, BSF, METRIC, UNC, or as required |
| Fasteners |
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| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Test Certificate | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Additional Certifications | PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Production Process | M24-M100: hot forging , M2-M24: Cold Froging, for custom-made connecting element machining and CNC |
| Types | Bolts, Nuts, Stud Bolts, Washers, Threaded Rod, Anchor Fasteners, Eye Bolt, Stud, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, Hexagon Castle Nuts, Hexagon Domed Cap Bolts, Hexagon Thin Nuts etc. |
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Duplex Steel S31803 Bolts
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S31803 Duplex Steel Nuts
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Duplex S31803 Washers
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Duplex Steel S31803 Screw
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Duplex Stainless Steel S31803 Stud Bolt
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DSS S31803 U Bolts
- Duplex Steel S31803 Industrial Fasteners
- S31803 Duplex Steel Socket Set Screw
- DSS S31803 Washers
- Duplex S31803 Fasteners
- Duplex Stainless Steel S31803 Dome Washer
- Duplex Steel S31803 F51 U Bolts
- UNS S31803 Fasteners
- Duplex Steel S31803 F51 Fasteners
- Duplex S31803 Carriage Bolts
- S31803 Duplex Heavy Hex Bolts
- ASME SA182 Duplex Steel S31803 Fasteners
- Duplex Stainless Steel S31803 Washer
- Duplex Steel S31803 Square Nuts
- DSS S31803 Anchor Fasteners
- Duplex Steel S31803 Nut Bolt
- Duplex S31803 Eye Bolts
- Duplex Steel S31803 Stud Bolts
- DSS S31803 Fasteners
- Duplex Stainless Steel S31803 F51 Fastener
- Duplex Steel S31803 Hex Head Bolt
- Duplex S31803 Fasteners Price List
- DSS S31803 Acorn Nuts
- Duplex Steel S31803 Bolts and Nuts
- Duplex Steel S31803 Wing Nuts
- S31803 Duplex Steel Ogee Washers
- Duplex Steel 1.4462 Fasteners
- Duplex Steel S31803 F51 Threaded Rod
- Duplex S31803 Flat Washers
- UNS S31803 Fasteners
- Duplex Stainless Steel S31803 Structural Bolts
- Duplex Steel S31803 Plain Washer
- Duplex Stainless Steel S31803 F51 Fasteners
- S31803 Duplex Steel Coupling Nuts
- Duplex S31803 Studs
- Duplex Steel 1.4462 Fastener
- S31803 Duplex Steel Heavy Hex Nuts
- DSS S31803 Self Tapping Screw
- Duplex Steel S31803 F51 Allen Cap Screw
- Thick Duplex Steel S31803 Washers
- S31803 Duplex Fasteners
- DSS S31803 Self Locking Nuts
- ASTM A182 Duplex Steel S31803 Spring Washer
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex S31803 | S31803 | 1.4462 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| S31803 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
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