Re: [MW:33863] Stabilizing treatment of SS plate /components

Is Zr is stabilize element, of so, what is classification of ASS. 

On Mon, Dec 26, 2022, 8:40 AM 'Sankaran Sp' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Dear  Mr.Prakash,

stabilized heat treament is required for stablized staniless steel only, not for all SS grades.

stabilizing alloys of Like : Nb/Cb, Ti ,Zr & others are speciafiaclly added in the normal SS aloys to avoid senstitization, after solution heat treatement we don't know about whether these stabilzed alloys are setteld in grain boundry or in the core. hence to ensure the stabilized alloys in grain boundry this stabilized heat treatment is essential, as per ASTM A 182 ot ASTM A 351 this stabilized heat teratment is given as subimentary variable for forging & casting respectively. During stabilized heat treatement soaking hour to given as 4 hour (min).          

 

Regards,

Sankaran.SP

Welding & Metallurgy expert

Coimbatore, India. 

On Thursday, 22 December, 2022 at 08:53:38 am IST, 'Prakash Hegde' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Hi! Friends

Why some of the client spec ask for

Stabilizing treatment (At lower temperature than solution annealing i.e. about 900C) of already solution annealed plate but not Welded SS components

Especially  304H,347,321

Regards

Hegde

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