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Stainless Steels
Nitronic 50 and Nitronic 60 are both austenitic stainless steels but provide very different levels of mechanical and physical properties. Nitronic is a trademark of AK Steel Corporation and is applied to a range of stainless steel grades that utilised nitrogen as an alloying element. Nitronic 50 (Nit50, UNS S20910, DIN 1.3964, ASTM A182 XM19) […]
Stainless Steels
Nitronic 50 provides both higher strength and improved corrosion resistance when compared with SS316, so would be considered a better product. However, due to its higher alloy content it is more expensive, and availability is lower in product forms other than solid round bar. Nitronic 50 (Nit50, UNS S20910, DIN 1.3964, ASTM A182 XM19) is […]
Super Duplex
1.4460 (DIN 1.4460) is a super duplex stainless steel based upon 25% chromium content, also specified as UNS S32900, AISI 329 and EN X3CrNiMoN27-5-2. ‘Duplex’ stainless steels are a family of stainless steels that contain a mixed microstructure of austenite and ferrite phases. They offer a combination of good corrosion resistance and high strength, making […]
Super Duplex
DIN 1.4462 is a duplex stainless steel based upon a 22% chromium content. It can also be referred to as UNS S31803 (ASTM A182 F51) or UNS S32205 (ASTM A182 F60) when supplied as solid bar. The grade known as DIN 1.4462 was originally developed in the 1930s for application in paper and pulp manufacture. […]
Super Duplex
UNS S31803 is a duplex stainless steel based upon a 22% chromium content, whereas SS316 is an austenitic stainless steel based upon an 18% chromium content. They have significantly different physical and tensile properties due to their different composition and microstructure. S31803 has better corrosion resistance and higher strength, but SS316 may be used for […]
Super Duplex
UNS S31803 is a duplex stainless steel based upon a 22% chromium content. It is also identified at DIN 1.4462 and ASTM A182 F51. Developed in the 1930s for application in paper and pulp manufacture, it provided twice the strength and provide a significant uplift in corrosion resistance compared to the more general 304/316 stainless […]
Super Duplex
S31803 is a duplex stainless steel based on a chromium content of 22% and can also be referenced as DIN 1.4462 and ASTM A182 F51 when supplied as round bar. Developed in the 1930s for application in paper and pulp manufacture, it provided twice the strength and a significant uplift in corrosion resistance compared to […]
Super Duplex
S31803 is almost identical to S32205 in terms of both composition, physical and tensile properties. S32205 is achieved by producing S31803 with certain elements – chromium, nickel and molybdenum, controlled to the upper limit of their range. As these three elements account for the resistance to pitting corrosion S32205 has a slightly improved and more […]
Super Duplex
Duplex stainless steels have many attractive properties, with their high strength and excellent corrosion resistance achieved in a cost-effective way. As such, they have become widely used in a wide variety of applications. However, there are instances where their characteristics are not best suited and other grades may have to be used. ‘Duplex’ stainless steels […]
Super Duplex
A duplex stainless steel is named because it has a ‘duplex’ microstructure, meaning a balance of austenitic and ferritic grains. This means that duplex stainless steels combine physical and mechanical properties of both, making them an attractive and cost-effective proposition. Austenitic stainless steels generally provide excellent corrosion resistance, good mechanical properties over a wide range […]
Super Duplex
Super duplex stainless steels are grades that have a combination of austenitic and ferritic microstructures, based upon a chromium content of 25%. There have been a large number of grades developed over the last 50 years that meet this basic classification. However, the most popular ones are described below. UNS S32550 equates to Ferralium 255, […]
Super Duplex
1.4410 is shorthand for DIN 1.4410, a super duplex stainless steel also identified by the specifications UNS S32750 and ASTM A182 F53. This particular 25% Cr super duplex stainless steel was originally developed by Sandvik (now Alleima) during the 1990’s and marketed as SAF2507. ‘Duplex’ stainless steels are a family of stainless steels that contain […]
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