... to their effect on the corrosion performance. Based on current cases from the industry, products in different material types (including austenitic and duplex stainless steel) are investigated using a range of standardized test methods. This with the goal to gain further understanding of how to conduct quality...

... properties of the material. This grade is based on the UNS S31803/S32205 designations, and obtained by slight changes in the chemical composition and production route compared to the conventional 2205 duplex grade. For confidentiality reasons, the exact chemical composition cannot be given in this paper...

...cost effective material HPHT wells high strength grade supermartensitic S13Cr Duplex Stress Corrosion cracking sulfide stress cracking pitting cyclic polarization INTRODUCTION The combination of targeted performances of the new alloy: - 110 or 125ksi High Yield strengths - higher...

...Abstract Corrosion of stainless steels in water reservoir basin has been caused by condensed moisture and high concentration of chlorine. Conventional steels such as type 304 and 316L grades might not be strong enough in water reservoir. Corrosion-resistant duplex stainless steel was applied...

...INTRODUCTION Absrract This work details the failure analysis of a super duplex valve (UNS J93404) ⁽¹⁾ ASME ⁽²⁾ class 1500, operating in treated sea waters with high chloride content below 80°C. A detailed analysis of the microstructure, fracture surfaces and mechanical...

... Abstract The strong detrimental influence on both toughness and corrosion resistance of intermetallic particles (IMP) in the microstructure of duplex stainless steels is well known. Toughness and corrosion testing along with microstructural examination of samples has been used as a collective to determine...

... tested Family UNS C Cr Ni Mo N Mn PREN Hardness (HV30) Ferritic-martensitic S41003 0.015 12.5 0.5 - - 1 12.5 244 - 321 Lean duplex S32101 <0.030 21.5 1.5 - 0.22 5 25 239 S32202 <0.30 22 2 - 0,20 - 25 244 S32304 <0.030 23 4 - 0,14 - 25...

... temperature); in the same conditions, pitting to a depth of 0.4 mm occurred on type UNS S31603. Alloy A Austenitic Stainless Steel UNS S30403 Alloy B Austenitic Stainless Steel UNS S31603 Alloy C ‘Lean’ Duplex Stainless Steel UNS S32101 Alloy D Duplex Stainless Steel UNS S31803 Alloy E...

...Duplex- or superduplex stainless steels seemed to be candidate materials for the high temperature piping ^{3 , 4} but ISO 15156-3 ⁽¹⁾ limits the partial pressure of H₂S to 0.1 bar for duplex and 0.2 bar for superduplex to avoid environmental cracking (SSC, Cl-SCC...

...Abstract Cost, availability, and performance are all driving factors in material selection. Duplex stainless steels have long been a point of interest to the pulp and paper industry and biomass conversion due to lean alloying elements and good corrosion resistance. The caution with using duplex...

... multipasse de aços inoxidáveis duplex , Tese de doutorado - USP, São Paulo-Brasil , 2001 . 3 Nowacki   J. , Duplex-steel welding problems in the bulding of chemical cargo ships , Welding Int. vol. 18 , no. 7 , p. 509 - 515 , 2004 . 4 Nilsson   J. O , Karlsson   L. , Anderson...

... important roles. For duplex and lean duplex grades it is essential to ensure that an adequate amount of austenite is formed in the weld metal and heat affected zone, in order to fulfil requirements in terms of austenite-ferrite phase balance, but also to avoid the precipitation of detrimental phases...

... corrosion through appropriate control of environmental conditions. The model accounts for the initiation and propagation of localized corrosion (either pitting or crevice corrosion) and stress corrosion cracking (SCC) of austenitic or duplex stainless steel containers as a result of the deliquescence...

... be remembered that the test itself shows fairly large scatter and lower values than 35 °C (95 °F) can also be measured sometimes for the base material. Abstract Process industries, including pulp, paper and biomass conversion are constantly in search of new, cost-efficient materials solutions. Duplex stainless...

.... sulfuric acid duplex austenitic stainless steel INTRODUCTION Sulfuric acid is one of the most widely-used chemicals all over the world, so corrosion issues need to be handled all the way from the manufacturing process, via transportation and storage to the end user. The concentration and temperature...

... such as duplex stainless steel (UNS S32205), super duplex stainless steel (UNS S32507) as well as Alloy 625 (UNS N06625) without any strength reducing heat treatment. The corrosion resistant performance of rolled lined pipes is a result of the excellent mechanical bonding with high gripping force between...

... protected from crevice corrosion using lacquer such that 85% of the specimen area is exposed to the solution. Abstract The pitting corrosion resistance of three types of lean duplex stainless steels (grades UNS S32003, UNS S32101 & UNS S32304) along with duplex stainless steel grades (UNS S31803...

...A detailed failure analysis of the 22% Cr tubes from the overhead heat exchanger and qualification of the hyper duplex UNS S32707 material for the application will be further discussed in this paper. EXPERIMENTAL PROCEDURE Failure Analysis²...

... of duplex, UNS S31803 and UNS S32550, the corrosion rate was not found to be dependent on the fluoride content in the range investigated. Between these two grades, the superduplex grade has the best behavior (0.02mm/y). For the corrosion rates measured on the coupons fitted with the MCA, the same comments...

... of the study reported earlier ^{[ 7 ]}, which included only the austenitics UNS S31603 and UNS S31726, one duplex grade UNS S31803, one 6% Mo superaustenitic and one nickel-base alloy UNS N10276, several superduplex UNS S32520 coupons were sent to CC Technologies Laboratories, Inc. for an identical...