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Re: [MW:31960] SS 405 grains

By Materials & Welding
may get :-
 *  grain growth which lead to low toughness 
 *  brittle phases as Sigma or Chi which lead to loos of toughness or even cracking 

Best Regards ,
ENG. Ahmed Osman


On Monday, January 25, 2021, 06:42:57 a.m. GMT+3, EmaD FaRaHanI <emad.farahani@gmail.com> wrote:


Dear all,

what will happen to the grains of a ferritic stainless-steel type AISI 405 used as an attachment of a hanger bar in a boiler, when it is exposed to flame temperatures of the boiler for 4 years of continuous operation? It is understood that the 405 steel will not oxidize in the high-temperature service environment.

Regards,

Emad


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