Stainless Steels

In industries where equipment faces aggressive corrosion, high temperatures, and mechanical stress, selecting the right material is crucial. Ferralium 255 and Alloy 625 are two high-performance alloys that excel in such demanding conditions. Stocked by Langley Alloys, these materials are designed to withstand the harshest environments, ensuring longevity and reliability in critical applications. Understanding PREN: […]

Pitting Resistance Equivalent Number (PREN) is a critical metric used in materials science to evaluate the corrosion resistance of stainless steels and nickel-based alloys, particularly in harsh environments like seawater or chemical processing plants. PREN provides a numerical value that helps engineers and metallurgists predict how well an alloy will resist pitting corrosion – a […]

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 Nitronic 50 (Nit50, UNS S20910, DIN 1.3964, ASTM […]

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. How does Nitronic 50 compare to SS316? Nitronic 50 (Nit50, UNS […]

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 […]

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. […]

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]