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Stainless steel 904L pipes have a low carbon content and are acid resistant. These 904L Grade 1.4539 Stainless Steel Pipes contain less carbon and more nickel and molybdenum in their composition. Stainless Steel 904L Pipes feature good activation, passivation, and conversion properties, as well as excellent corrosion resistance. In fact, Stainless Steel 904L Pipes are extremely corrosion resistant in non-oxidizing acids such as acetic acid, sulfuric acid, formic acid, and phosphoric acid at any concentration, normal pressure, and temperature.


The pitting resistance of Stainless Steel Grade 1.4539 Seamless Pipes is outstanding when this alloy is used in neutral chloride containing media. Not only is Grade 904l welded pipe resistant to crevice corrosion and stress-related corrosion cracking, but it's also suitable for use in sulfuric acid solutions at varying concentrations below 70 degrees Celsius. Because the carbon content of ASTM A312 uns n08904 1.4539 pipes is minimal, they are resistant to carbide precipitation, even when subjected to general heat treatments or welding processes.

Intergranular corrosion, which might develop following general heat treatment or welding operations, is therefore eliminated. The specified grade SA 312 uns n08904 Electropolished Pipes can be passivated even in reducing acid containing settings such as sulfuric acid and formic acid because of the increased amounts of all three elements, chromium, nickel, and molybdenum, as well as the addition of copper.


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