Heat Exchanger World magazine April 2024 | Page 27

Customizable to your needs
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Materials
“ From an R & D perspective , this new super duplex reflects a sharper focus on optimizing the material for acid corrosion resistance . Previously , most of our duplexes were developed with chloride resistance as the main focus , with high PRE levels to resist pitting and crevice corrosion . Resistance to acidic conditions was less prioritized . Now , we have finetuned the chemical composition to resist acidic environments better . This involves a high chromium content of 30 % and a molybdenum level of 3.2 % to maintain good structural stability and balancing of the alloying elements ,” says Daniel Gullberg , Manager of Product Development CRA .
SAF™ 3006 Chemical composition ( nominal ), % C Si Mn P S Cr Ni Mo N ≤0.030 0.2 1.0 ≤0.030 ≤0.015 30 7 3.2 0.35
New innovation for aggressive acid environments “ SAF™ 3006 is an upgrade over existing duplex grades facing higher-than-desired corrosion rates and where extended equipment lifetime is wanted . You get all the benefits of traditional duplex steel in terms of strength , lighter weight , and cost-efficiency , but tailored to resist acids . It can be used in acid production plants with or without seawater cooling ,” says Oscar Öhlin , R & D Engineer at Alleima . SAF™ 3006 will be produced in Alleima ’ s fully integrated value chain , from R & D to end product , with tight quality control and a strong focus on sustainable production . The tube is based on more than 80 % recycled steel and melted and produced using a high
SAF 3006 tubes for heat exchanger .
degree of fossil-free energy sources . Seamless tube and pipe in SAF™ 3006 will be supplied in standard heat exchanger dimensions .
Advancing the chemical and petrochemical industry “ The introduction of SAF™ 3006 marks the ongoing evolution of the duplex revolution Alleima started decades ago – now tailored for acidic conditions in heat exchangers . We look forward to collaborating with customers to advance their needs ,” concludes Tom Eriksson , Executive Vice President and Head of R & D at Alleima .

CORROSION RESISTANT

( PLATE HEAT EXCHANGERS )

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30 YEARS

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