[MW:900] Re: pre heat for dissimilar metals

Dear Ibrahim,

 

Standard also ask to follow ASME SEC IX for Welding process & qualification. Finally pupose of all std soundness of welding joint.

 

Regarding your query abour the preheat . There is not mandotory requirments of preheat temaprature for CS to SS weld for thicknes up to 2 1/2'' but you can preheat up to 60'c good practioce for welding what we are using.

 

Thanks,

 

Vikas Rana

 

On 7/3/08, Muhammed Ibrahim <ibratech@gmail.com> wrote:

Any body can help me to decide the pre heat temperature for welding of carbonsteel with stainless steel?  If thickness is greater than 32mm,  preheat is mandatory in SEC VIII. But in this case what I can follow. Carbon steel preheat temperature or stainless steel preheat temperature?.

If it damage the property of stainless steel is it mandatory?

Thanks & Regards
Muhammed Ibrahim PK

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