Duplex Steel S31803 Fasteners are crafted from a duplex stainless steel alloy that combines excellent corrosion resistance with high mechanical strength. Caliper Overseas is a trusted Duplex Steel S31803 Fasteners manufacturer and supplier in India, offering high-quality fasteners designed for superior strength and durability. Our fasteners are used across various industries, especially in environments exposed to chloride and marine atmospheres. We manufacture it in compliance with international standards such as DIN, ASTM and BS.
Our fasteners exhibit remarkable properties, including a tensile strength of 650–880 MPa, a yield strength of 448 MPa, and an elongation of 25%.With a hardness level of Rockwell C (HRC), it possesses fine wear resistance as well as toughness. Duplex S31803 fasteners also have resistance against stress corrosion cracking and are of long service. For strong, durable fastening solutions, feel free to call us today for your specific requirements.
Table Of Content
About Duplex Steel S31803 Fasteners
Duplex Steel S31803 Fasteners Specification
Equivalent Grades Of Duplex Steel S31803 Fasteners
Chemical Composition Of Duplex Steel S31803 Fasteners
Duplex Steel S31803 Fasteners Mechanical Properties
Stock Availability of Duplex Steel S31803 Fasteners
Duplex Steel S31803 Fasteners Ready Stock
Duplex Steel S31803 Fasteners Applications and Uses
Supply & Export Destinations of Duplex Steel S31803 Fasteners

| Standard | ASTM A479 / ASME SA479 |
| 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. |
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex S31803 | 1.4462 | S31803 |
| 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 |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
Duplex Steel S31803 Fasteners in Distillery Plants
Duplex Steel S31803 Fasteners in Sugar Industries
Duplex Steel S31803 Fasteners in Process Industries
Duplex Steel S31803 Fasteners in Power Plants
Duplex Steel S31803 Fasteners in Refineries
Duplex Steel S31803 Fasteners in Petrochemical Plants
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Duplex Steel S31803 Fasteners Stock Availability
Duplex Steel S31803 Bolts
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