Mechanical ASTM A789 Duplex 2507 Capillary Coiled Tubing

Super Duplex 2507 Stainless Steel Coiled Tubing

Super Duplex 2507, is very similar to UNS S31803 2205® Duplex. The contents of chromium and nitrogen are higher in the 2507 which in turn creates higher corrosion resistance as well as a longer lifespan. 2507 is composed of between 24% to 26% chromium, 6% to 8% nickel, 3% molybdenum, and 1.2% manganese, with the balance being iron. Trace amounts of carbon, phosphorus, sulfur, silicon, nitrogen, and copper are also found.

Benefits include good weldability and workability, a high level of thermal conductivity and low coefficient of thermal expansion, resistance to corrosion, fatigue, pitting and crevice corrosion, high resistance to stress corrosion cracking especially in chloride atmospheres, high energy absorption. Essentially, the Duplex alloys are a compromise; possessing some of the ferritic stress corrosion cracking resistance and much of the superior formability of the common austenitic stainless steel alloys yet more cost effective than the high nickel alloys.

Duplex 2507 Stainless Steel Coiled Control Line Tubing Features

• Close dimensional tolerances
• Enhanced mechanical properties
• Superior surface finish
• High cleanness of inside surface
• Controlled ovality, eccentricity

Applications

Oil and gas industry equipment

Offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection and ballast water systems

Chemical process industries, heat exchangers, vessels, and piping

Desalination plants, high pressure RO-plant and seawater piping

Mechanical and structural components, high strength, corrosion-resistant parts

Power industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping