HuaNickel 00Cr27Ni7Mo5N is an extra super duplex stainless steel. Super duplex stainless steel was introduced after 2000 to solve the shortcomings of local corrosion performance and strength of heat chloride resistance of super duplex stainless steel. The RE value of HuaNickel 00Cr27Ni7Mo5N can be as high as 49, and the high nitrogen, molybdenum, chromium content and duplex structure make the yield strength and tensile strength of this steel pipe as high as 800MPa and 1000MPa respectively, and the plastic and toughness are also maintained at a high level required for engineering applications.

HuaNickel 00Cr29Ni6Mo2N is a new super duplex stainless steel, which is a further improvement of 00Cr25Ni7Mo4N steel. Compared with HuaNickel 00Cr25Ni7Mo4N, the amount of molybdenum and chromium in this steel is reduced, and its pitting corrosion equivalent value is slightly lower than that of 00Cr25Ni7Mo4N, but the composition is more balanced and the thermal stability is improved. This steel is resistant to alkali medium corrosion, various local corrosion, such as intergranular corrosion, stress corrosion, pitting corrosion, crevice corrosion, etc., and the welding performance is good, and the strength is about 3 times that of ordinary chromium-nickel austenitic stainless steel.

HuaNickel 00Cr32Ni7Mo4N and the aforementioned 00Cr27Ni7Mo5N are super duplex stainless steels. 00Cr32Ni7Mo4N was developed to meet the demanding needs of deep-sea (water depths of nearly 2500m and pressures above 1500psi). Compared with the aforementioned SAF2507, the increase in the amount of chromium and nitrogen in the steel makes HuaNickel 00Cr32Ni7Mo4N steel not only have higher strength to withstand higher applied loads, but also have more excellent corrosion resistance to meet the needs of more demanding corrosive media.