1.4948 – 304H – S30409
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Stainless steel grade with wet corrosion resistance and improved high-temperature strength (creep resisting steel).
Good formability and weldability. Commonly used for tubes and pressure vessels.
Designed primarily for use at temperatures exceeding ~550 °C, i.e. in the temperature range where creep strength as a rule is the dimensioning factor and where HT corrosion occurs.
|> EURONORM :||EN 1.4948|
|> ASTM :||A 240 - UNS S30409|
Since most high-temperature materials are optimised with regard to strength and corrosion resistance at elevated temperatures, their resistance to electrochemical low-temperature corrosion may be less satisfactory.
Components made of high-temperature material should therefore be designed and operated so that acid condensates are not formed, or at least so that any such condensates are drained away.
• Pressure vessels
• Iron, steel, and non-ferrous industries
• Engineering industry
• Energy conversion plants
• Cement industry