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08192 Super-Ferritic Stainless Steels - The Cost Savings Alternative for Heat Exchanger Tubing

Picture for 08192 Super-Ferritic Stainless Steels - The Cost Savings Alternative for Heat Exchanger Tubing
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Product Number: 51300-08192-SG
ISBN: 08192 2008 CP
Author: Dan Janikowski and Edward Blessman
Publication Date: 2008
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Originally developed back in the late 1970's, the current generation of super-ferritic stainless steels have become a cost-effective choice for heat exchanger tubing. When they were first developed, the goal was to have an alternative to titanium grade 2 in applications such as seawater and other high chloride applications. At that time, titanium was in was high priced and had a long lead time, not unlike today. over the last 10 years, the majority of the seawater capable high- performance stainless steel literature and usage has been focused on super-austenitic (6% and 7% Mo alloys) and super-duplex alloys. While the performance of these alloys is very good, today’s nickel and molybdenum material prices have driven the price of these alloys skyward. The power industry has recognized the effectiveness super-ferritics and over 78,000,000 feet are in usage since beginning in early 1980. The low nickel and moderate molybdenum content for excellent chloride resistance, has driven a substantially increased use of the super-ferritic alloys. This paper traces usage in power plant heat exchanger applications and compares properties such as corrosion resistance, mechanical and physical properties and compares them to the other seawater and MIC resistant grades.
Originally developed back in the late 1970's, the current generation of super-ferritic stainless steels have become a cost-effective choice for heat exchanger tubing. When they were first developed, the goal was to have an alternative to titanium grade 2 in applications such as seawater and other high chloride applications. At that time, titanium was in was high priced and had a long lead time, not unlike today. over the last 10 years, the majority of the seawater capable high- performance stainless steel literature and usage has been focused on super-austenitic (6% and 7% Mo alloys) and super-duplex alloys. While the performance of these alloys is very good, today’s nickel and molybdenum material prices have driven the price of these alloys skyward. The power industry has recognized the effectiveness super-ferritics and over 78,000,000 feet are in usage since beginning in early 1980. The low nickel and moderate molybdenum content for excellent chloride resistance, has driven a substantially increased use of the super-ferritic alloys. This paper traces usage in power plant heat exchanger applications and compares properties such as corrosion resistance, mechanical and physical properties and compares them to the other seawater and MIC resistant grades.
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