Heat Exchanger World magazine April 2024 | Page 26

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super-duplex tube tailored for acids
SAF™ 3006 is a high-alloy duplex stainless steel tailored to enhance corrosion resistance in acidic and caustic environments . The new alloy , an upgrade to traditional super-duplex stainless steels , adds to Alleima ’ s growing duplex portfolio . The main application is heat exchangers in the chemical and petrochemicals industries .
Text & images by Alleima
Alleima has solidified its position as a global manufacturer of high value-added products in advanced stainless steels and special alloys . Since the 1960s , the company has been at the forefront of developing modern duplex grades and now offers a broad portfolio . “ We ’ re thrilled to welcome this new super duplex to our expanding duplex family . It provides that ‘ missing duplex tool ’ for customers battling acids in heat exchangers , giving them that extra edge . With the addition of SAF™ 3006 ( UNS S83071 ), we strengthen our presence in duplex materials tailored for acidic corrosion , where we see strong growth potential . Applications may include caustic evaporators , acid coolers and evaporators ,” says Eduardo Perea , Market & Product Manager EMEA at Alleima Tube Division .
Pioneering the duplex revolution Alleima was at the forefront of the ‘ duplex revolution ’ of the 1960s and 1970s , introducing a cost-efficient stainlesssteel alternative to more expensive nickel alloy grades . The company continues to innovate in this area . Duplex grades , with a 50-50 austenitic-ferritic structure , offer more than twice the strength of standard stainless steels and superior corrosion resistance .
Tailored for acids “ SAF™ 3006 will complement SAF™ 2507 in dealing with corrosive conditions in heat exchanger tubing exposed to hydrochloric , sulphuric , formic , or other acids . This is our super duplex tailored to resist acids ,” says Eduardo Perea .
SAF 3006 super-duplex stainless steel tube .
26 Heat Exchanger World April 2024 www . heat-exchanger-world . com