ASTM A789 UNS S32205 Seamless Duplex Stainless Steel Tubes For Seawater

Product Specification

ASTM A789 UNS S32205 Seamless Duplex Stainless Steel Tubes For Seawater Desalination

ASTM A789 UNS S32205 Seamless Duplex Stainless Steel Tubes are high-quality tubes made from a duplex stainless steel grade that offers excellent corrosion resistance and high strength. These tubes are seamless, meaning they are manufactured without any welding or joining processes, resulting in a strong and leak-proof construction. These tubes are commonly used in various industries such as oil and gas, chemical processing, marine applications, and more. They are suitable for high-pressure and high-temperature applications, making them a versatile and reliable choice for demanding environments. The ASTM A789 specification ensures that these tubes meet the required mechanical properties, chemical composition, and dimensional tolerances for seamless duplex stainless steel tubes. They are available in various sizes and wall thicknesses to suit different applications and requirements. ASTM A789 UNS S32205 Seamless Duplex Stainless Steel Tubes are a durable and long-lasting solution for a wide range of industrial applications, offering superior performance and reliability in challenging environments.

Features:

1. High corrosion resistance: ASTM A789 UNS S32205 seamless duplex stainless steel tubes offer excellent resistance to corrosion, including stress corrosion cracking, pitting, and crevice corrosion.

2. High strength: These tubes have a high strength-to-weight ratio, making them ideal for use in demanding applications where strength is critical.

3. Good weldability: ASTM A789 UNS S32205 seamless duplex stainless steel tubes can be easily welded using common welding techniques, allowing for easy fabrication and installation.

4. Good mechanical properties: These tubes exhibit good mechanical properties, including high tensile strength, yield strength, and elongation, making them suitable for use in a wide range of applications.

5. High temperature resistance: ASTM A789 UNS S32205 seamless duplex stainless steel tubes can withstand high temperatures, making them suitable for use in high-temperature applications such as heat exchangers and boilers.

6. Versatile applications: These tubes are used in a variety of industries, including oil and gas, chemical processing, marine, and pulp and paper, due to their excellent properties and durability.

7. Seamless construction: The seamless construction of ASTM A789 UNS S32205 duplex stainless steel tubes ensures a smooth interior surface, reducing the risk of corrosion and improving flow characteristics.

8. Cost-effective: These tubes offer a cost-effective solution for applications requiring high corrosion resistance and strength, as they require less maintenance and have a longer service life compared to other materials.

General Duplex stainless steel information

2205 is the most widely used duplex (ferritic/austenitic) stainless steel grade. It finds applications due to both excellent corrosion resistance and high strength. The standard duplex S31803 composition has over the years been refined by many steel suppliers, and the resulting restricted composition range was endorsed as UNS S32205 in 1996. Duplex S32205 gives better guaranteed corrosion resistance, but for much of the Duplex S31803 currently produced also complies with Duplex S32205. 2205 is not generally suitable for use at temperatures above 300ºC as it suffers from precipitation of brittle micro-constituents, nor below -50ºC because of its ductile-to-brittle-transition.

Duplex Corrosion Resistance

Excellent general corrosion resistance; superior to Grade 316 in most environments. Excellent resistance to localized corrosion including intergranular, pitting and crevice corrosion; the CPT of 2205 is generally at least 35ºC. The grade is also resistant to chloride stress corrosion cracking (SCC) at temperatures of up to about 150ºC. Grade 2205 will often perform well in environments which cause premature failure of austenitic grades. It has better resistance to sea water then Grade 316.

Duplex Heat Resistance

Although 2205 has good high temperature oxidation resistance, this grade - like other duplex stainless steels - suffers from embrittlement if held for even short times at temperatures above 300ºC. If embrittled, this can only be rectified by a full solution annealing treatment. Duplex stainless steels are almost never used above 300ºC.

Duplex Heat Treatment

Classification Society Criterion:CSS,DNV,GL,LR,NK,KR,ABS,BV

Solution treatment (annealing) - heat to 1020ºC-1100ºC and cool rapidly. This grade cannot be hardened by thermal treatment, but does work harden.

Applications:

1. Oil and Gas Industry: ASTM A789 UNS S32205 seamless duplex stainless steel tubes are commonly used in the oil and gas industry for various applications such as offshore drilling platforms, subsea pipelines, and refineries. The high corrosion resistance and strength of duplex stainless steel make it ideal for these harsh environments.

2. Chemical Processing: These seamless tubes are also used in chemical processing plants for handling corrosive chemicals and materials. The superior resistance to corrosion and high temperature of duplex stainless steel tubes make them an excellent choice for such applications.

3.Power Generation: Duplex stainless steel tubes are used in power generation plants for heat exchangers, boilers, and condensers. The high strength and resistance to corrosion of these tubes make them suitable for high-pressure and high-temperature applications in power plants.

4.Water Treatment: ASTM A789 UNS S32205 seamless duplex stainless steel tubes are often used in water treatment plants for desalination, wastewater treatment, and other water purification processes. The excellent corrosion resistance and durability of duplex stainless steel make it a reliable choice for these applications.

5. Food and Beverage Industry: Duplex stainless steel tubes are used in the food and beverage industry for processing and handling food products. The hygienic properties and corrosion resistance of duplex stainless steel make it suitable for applications such as food processing equipment, storage tanks, and piping