Home > Duplex Steel > Duplex Steel Tubes S31803
Duplex Steel Tubes S31803 represent a pinnacle in corrosion-resistant tubing, custom-built from a duplex stainless steel composition, marrying the robust qualities of both austenitic and ferritic microstructures. Renowned for their formidable strength, unparalleled corrosion resistance, and long-lasting durability, these tubes stand as a cornerstone in various industries. Whether it’s navigating the demanding landscapes of chemical processing, the rigors of oil and gas exploration, the challenges of marine engineering, or the intricacies of construction projects, Duplex Steel Tubes S31803 consistently deliver steadfast performance in the face of harsh environmental conditions, ensuring reliability where it matters most.
Specifications | : | ASTM A789 ASME SA789 |
Dimensions | : | ASTM, ASME and API |
Tube Size | : | 1/2″NB TO 12 “NB IN |
Specialized in | : | Large Diameter Size |
Schedule | : | SCH20, SCH30, SCH40, STD, SCH80 |
Type | : | Seamless / ERW / Welded / Fabricated |
Form | : | Round, Hydraulic Etc |
Length | : | Single Random, Double Random & Cut Length. |
End | : | Plain End, Beveled End, Treaded |
S31803 | C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
1.0 | 0.03 | 0.02 | 2.0 | 3.0 – 3.5 | 22.0 – 23.0 | 0.03 | 4.5 – 6.5 | 0.14 – 0.2 | Bal |
S31803 | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
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We offer These Duplex Steel Tubes S31803 as per DIN, ISO, JIS or ANSI Standard.
Water resistance: Duplex steel wires exhibit excellent corrosion resistance, especially in aggressive environments such as chloride-containing water, acidic solutions, and seawater. This strength is due to the austenite and ferritic microstructures of the duplex stainless steel . . . .
Stress cracking resistance: Duplex stainless steel tubes have better stress corrosion cracking resistance than austenitic stainless steel, especially in chloride-containing environments. This property makes them suitable for offshore and marine applications in the functional area.
High durability: Duplex steel containers also have high durability at low temperatures, making them suitable for use in cryogenic environments or where impact resistance is required
Excellent weldability: Proper welding techniques make Duplex stainless steel tubes easily weldable. This simplifies manufacturing and maintenance, reducing manufacturing and machining time.
High strength: Duplex steel tubes are stronger than conventional austenitic stainless steel. This results in thinner tube walls, reducing weight and cost while maintaining system integrity, which makes it ideal for applications where strength-to-weight ratios are important.
Duplex Steel Tubes S31803 applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Materials: Understand the properties of duplex stainless steel S31803. Duplex stainless steel combines superior corrosion resistance and strength compared to traditional austenitic or ferritic stainless steel.
Size and Design: Determine duplex steel tubes’ required size, thickness, and wall thickness based on application and design specifications. Consider factors such as pressure levels and required flow rates.
Technical Properties: Evaluate the performance of S31803 duplex steel, including its tensile strength, strength, and shock resistance. These properties are important to ensure the tubes can withstand operating conditions.
Corrosion Resistance: S31803 Assess the corrosion resistance of duplex steel tubes under specific conditions of use. Monitor the presence of factors such as temperature, pH, chloride levels, and other corrosive agents.
Function: Specify the preferred use of double-sided steel pipes. Duplex steel S31803 is commonly used in industries such as oil and gas, chemical processing, marine environments and desalination sites due to its corrosion resistance and mechanical properties.
Yes, duplex steel tubes S31803 can be welded using commonly used welding processes such as TIG (GTAW), MIG (GMAW), and SMAW (stick welding). However, special precautions must be taken to control heat input and minimize the risk of precipitation of harmful phases, ensuring proper post-weld heat treatment is performed.
To maintain duplex steel tubes S31803, regularly clean them with mild detergent and water, avoiding harsh chemicals. Inspect for signs of corrosion or damage periodically. Implement cathodic protection in corrosive environments. Ensure proper support to prevent stress corrosion cracking. Follow manufacturer guidelines for maintenance and inspections.
Yes, duplex steel tubes S31803 can be magnetic due to their microstructure containing both austenite and ferrite phases. The ferritic phase contributes to the magnetic properties, allowing them to attract a magnet. However, the degree of magnetism can vary depending on factors such as composition, processing, and heat treatment.
Duplex steel tubes S31803 exhibit excellent resistance to corrosion in various environments, including those containing chloride, sulfide, and acidic solutions. However, they can still corrode under extreme conditions or prolonged exposure to aggressive media. Proper material selection, maintenance, and corrosion prevention measures can mitigate these risks.
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