Home > Duplex Steel > Duplex Steel Fasteners S31803
Standard : DIN, ASTM, BS and all International Standards
Size : 3 mm to 200 mm
Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size : M1 – M64 | #4 to 3″ | Custom Sizes
Length : M02 to M33
Types : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel S31803 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Duplex Steel S31803 | 7.9 g/cm3 | 1402 °C (2555 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
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We offer These Duplex Steel S31803 Fasteners as per DIN, ISO, JIS or ANSI Standard.
Corrosion Resistance: Duplex steel S31803 fasteners exhibit excellent corrosion resistance, especially in aggressive environments such as marine and chemical processes. They resist general wear and tear, including pitting and crack corrosion.
Wide range of applications: Due to their superior mechanical properties and corrosion resistance, S31803 fasteners are suitable for a wide range of applications in oil and gas, chemical processing, marine engineering, pulp and paper, etc. They are used in a variety of structural, mechanical, and important bonding functions.
Cost Effectiveness: Although the initial cost of a pair of steel S31803 fasteners may be high compared to some other materials, their high corrosion resistance, strength, and generally low cost over the life span require no maintenance, replacement, or decommissioning, resulting in overall cost savings.
Duplex microstructure: The duplex microstructure of S31803 steel balances austenitic and ferritic phases. Compared to conventional austenitic or ferritic stainless steels, this structure contributes to strength and flexibility in terms of compression, corrosion and cracking resistance.
Strength: These fasteners are very strong, allowing them to withstand heavy loads and high pressures. The energy they store is also stored at high temperatures, making them suitable for use in a variety of industrial applications.
Duplex steel S31803 fasteners play a vital role across diverse industrial sectors, thanks to their exceptional properties. Widely utilized in industries such as chemical processing, oil and gas, marine, and offshore, these fasteners offer superior corrosion resistance and mechanical strength.
Oil and Gas Applications: Fasteners made of duplex steel S31803 are commonly used on marine platforms, subsea pipelines and equipment due to their high corrosion resistance and strength, even in aggressive environments containing chloride ions.
Marine applications: Duplex steel fasteners find applications in shipbuilding, offshore structures and marine equipment due to their corrosion resistance in the marine environment
Pulp and Paper Industry: Duplex steel S31803 fasteners are used in pulp and paper processing equipment, such as digesters, bleach plants, and paper machines, and they provide excellent corrosion resistance in acidic and alkaline environments.
Desalination equipment: Duplex steel S31803 fasteners are suitable for use in desalination plants where seawater is treated as fresh water. They provide excellent resistance to pitting and crack corrosion in high chloride environments typical of desalination plants.
Chemical Processing: In chemical corrosion control industries, two-dimensional metal fasteners are preferred for their resistance to corrosion, moisture, and stress corrosion cracking. They are Used in pumps, valves, reactors, and other equipment.
Types: Duplex steel S31803 is popular for its excellent corrosion resistance and high strength. Make sure the fasteners you choose are made from this particular duplex steel.
Certifications and Standards: Look for fasteners that conform to relevant industry standards and certifications, such as ASTM, ASME, or ISO standards. These certifications ensure that the binders are high quality and reliable for your application.
Size and Design: Choose a fastener of the right size, length, and thickness to ensure a good fit between the parts of the marriage. Consider yarn type (coarse or fine), thickness and length to ensure consistency.
Strength and mechanical properties: Duplex steel S31803 provides high strength and flexibility. Confirm that fasteners meet the required mechanical properties such as tensile strength, yield strength, and stiffness to ensure that they can withstand desired loads and stresses.
Corrosion Resistance: Determine where the packaging will be used. Duplex steels resist corrosion in various environments, even those containing chloride ions. Make sure fasteners are suitable for the corrosion exposure you intend to use.
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