UNS S32550 (W.Nr. 1.4507, F61) is a highly alloyed, super duplex stainless steel known for its exceptional strength, wear resistance, and superior corrosion resistance compared to 316 stainless steel. It also exhibits good ductility and high fatigue strength, surpassing alloy 20 and duplex 2205 in terms of yield strength. However, it is important to note that when exposed to temperatures between 1000°F and 1800°F, carbides, nitrides, and sigma phase can form in UNS S32550 stainless steel if soaked within that temperature range.

Super duplex 2507 (UNS S32750, W.Nr. 1.4410) offers a unique combination of high strength and outstanding corrosion resistance. It demonstrates remarkable resistance to general corrosion and localized corrosion, including pitting and crevice corrosion, particularly in demanding environments with high chloride levels and elevated temperatures. Additionally, its duplex structure provides excellent protection against stress corrosion cracking. However, it is important to note that, like other duplex (ferritic/austenitic) grades, Super duplex 2507 is not suitable for extreme temperature conditions. It is not recommended for use below -50°C or above +300°C due to concerns about potential loss of toughness.

Duplex 2205 (UNS S32250, UNS S31803, W.Nr. 1.4462) is a highly popular grade of stainless steel known for its duplex (ferritic/austenitic) structure. It offers excellent resistance to corrosion and erosion fatigue, along with lower thermal expansion and higher thermal conductivity compared to austenitic steels. The yield strength of Duplex 2205 is approximately twice that of austenitic stainless steels.This stainless steel grade is widely utilized in various applications within a temperature range of -50ºF to +3000ºF. However, it is not recommended for use at temperatures exceeding 300°C, as it may experience the precipitation of brittle micro-constituents. Likewise, it should be avoided below -50°C due to potential ductile-to-brittle transition.

904L (UNS N08904, W.Nr. 1.4539) is an austenitic stainless steel with a high alloy composition and low carbon content. It is specifically designed to offer moderate to high corrosion resistance in various process environments. The inclusion of copper in this grade significantly enhances its ability to withstand strong reducing acids, especially sulfuric acid. The high levels of nickel and molybdenum in the alloy provide excellent resistance to chloride-induced stress corrosion cracking, including issues like pitting, crevice corrosion, and stress corrosion cracking. Moreover, the austenitic structure of 904L stainless steel ensures exceptional toughness even at cryogenic temperatures. It can be easily welded and processed using standard fabrication techniques.

310MoLN (UNS S31050, W.Nr. 1.4466) is a nitrogen-containing high-alloy austenitic stainless steel renowned for its ability to stabilize and enhance the austenitic phase, without the presence of intermetallic phases like intergranular carbide precipitations. This material exhibits outstanding resistance to various forms of corrosion, including intergranular corrosion, pitting, and crevice corrosion, in environments such as ammonium carbamate and nitric acid. Moreover, 310MoLN demonstrates favorable weldability, albeit with a relatively high energy requirement and moderate ductility. It finds extensive usage in applications demanding exceptional strength, resistance to oxidation, and protection against chloride-induced stress corrosion cracking.

254SMO (UNS S31254, W.Nr. 1.4547) is a super austenitic stainless steel known for its exceptional corrosion resistance. It combines chromium, nickel, molybdenum, and nitrogen to provide excellent resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. With twice the strength of stainless steel 300 series, 254SMO is often referred to as "6% Moly" due to its molybdenum content. It can withstand high temperatures and volatile conditions while offering cost-effective advantages over high nickel and titanium alloys.

253MA (UNS S30815, W.Nr.1.4835) is a type of steel that offers a combination of favorable properties for high-temperature applications while being easy to work with. It maintains its resistance to oxidation at temperatures as high as 1150°C and demonstrates better performance in carbon, nitrogen, and sulphur-rich environments compared to grade 310. One of its advantages over high nickel alloys and grade 310 is its relatively low nickel content, making it more effective in reducing sulphide atmospheres. Additionally, the inclusion of high silicon, nitrogen, and cerium levels enhances the steel's ability to withstand oxide formation, maintain strength at elevated temperatures, and resist the formation of sigma phase precipitates. The austenitic structure of this grade also provides excellent toughness, even at extremely low temperatures such as cryogenic conditions.

17-7PH (UNS S17700, W.Nr. 1.4568) is a type of stainless steel known for its precipitation-hardening characteristics. It exhibits a semi-austenitic structure when in its annealed state and transforms into a martensitic structure when hardened. This steel offers notable advantages such as high strength, hardness, fatigue resistance, corrosion resistance, formability, and minimal distortion during heat treatment. It finds wide applications where a combination of excellent corrosion resistance and high strength is required. In its annealed state, 17-7PH stainless steel can be easily formed and subsequently hardened through uncomplicated heat treatments to achieve high levels of strength. Furthermore, this material demonstrates exceptional mechanical properties even at elevated temperatures of up to 900ºF (482ºC) when in the heat-treated condition. ​

17-4PH stainless steel (UNS S17400, W.Nr. 1.4542) is a type of martensitic stainless steel that contains chromium, nickel, copper, and niobium. It is known for its exceptional combination of strength, hardness, and corrosion resistance. This material is magnetic and exhibits excellent mechanical properties. It can be readily welded and processed using standard fabrication techniques. Additionally, 17-4PH stainless steel offers high resistance to crack propagation, favorable transverse properties, and proven durability against stress corrosion cracking in marine settings.

15-5PH stainless steel (also known as 15-5PH, UNS S51500, W.Nr. 1.4545) is a type of martensitic precipitation-hardening stainless steel. It possesses excellent strength, corrosion resistance, and mechanical properties at temperatures of up to 600°F (316°C). Furthermore, it exhibits remarkable toughness in both the longitudinal and transverse directions, making it suitable for various applications, including base metal and welds.