What is Duplex & Super Duplex Flats?

Flanges made from duplex and super duplex are followed as an important element in various industries due to their unique compositions and topmost grade properties. Metcore Alloys is a well-recognized company for challenging manufacturing, supplying, stocking, and exporting interests of these special steels. Normally, the composition of a Duplex Stainless Steel is 22% chromium and 3% molybdenum. On the other hand, super duplex stainless steel contains 25% chromium, 3.5% molybdenum, and 0.22–0.3% nitrogen.

Their balanced microstructure, comprising of both ferrite and austenite phases, imparts the special characteristics that develop in duplex and super duplex stainless steels. In particular, this dual-phase structure gives to duplex stainless steel remarkable mechanical strength combined with superior resistance to corrosion.

Super duplex stainless steels, however, contain increased levels of chromium, molybdenum, and nitrogen; and, as a result, exhibit superior resistance against pitting and crevice corrosion, making this material suitable for an even more aggressive environment.

Another critical factor is resistance to temperature, which is vital while choosing the right alloy for the task at hand. Operating conditions for Duplex Stainless Steel should, if possible, start from -40°C up to +280°C. Super Duplex Stainless Steel can operate within a wider temperature range, usually from -50°C to 300°, and this was the reason it can stand out well in very extreme conditions. The operating temperature range underlines wide applicability, extending from oil and gas to marine and chemical processing.

Applications involving duplex and super duplex stainless steels abound, showing a wide range of adaptability and reliability. Generally, the use of duplex stainless steel in construction and manufacturing is usually applied in less aggressive situations. Super duplex stainless steel is applied to those areas where applications are demanding, like in the oil and gas industries, since one of the big risks in those industries is corrosive exposure.

Working with super duplex stainless steel might have certain disadvantages. The high amount of alloying elements involved makes the fabrication and welding quite difficult compared to standard stainless steels. Therefore, manufacturing ability, stockists, and exporters need experience and equipment to deal with such materials efficiently and effectively. At Metcore Alloys, we pride ourselves on the capability to handle such issues and assure our clients that they will get nothing but high-quality products based on their needs and requests.

The duplex and super duplex flats represent a quantum leap in the technology of stainless steel. Two different unique composition and property spectrums have distinguished these steel alloys. As a leading manufacturers, suppliers, stockists, and exporters of these valuable materials to industries all over the world, the companies like Metcore Alloys are very important.

Material Specification of Stainless Duplex & Super Duplex Flats

Equivalent Grades Of Duplex & Super Duplex Flats

Chemical Equation of Duplex & Super Duplex Flats

Mechanical Composition of Duplex & Super Duplex Flats

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