[MW:2118] Re: preheat SA- 516 gr 70

Hi Saul,

If you like, I can do some calculations (on the basis of the actual
base-material analysis) to find out:
1. The critical hardness, above which cracks can be expected.
2. The peak hardness which occurs in your HAZs
3. If crackrisc is present: how to influence the cooling rate between
800 and 500 degrees

Best regards,

Hugo

On May 7, 2:50 am, "SAUL VASQUEZ T." <svasq...@ingetanques.com> wrote:
> Dear   all
>
> We are   API 650 steel tanks with  steel ASTM  516 gr70 and our client
> requests that preheat to 70°C - 100°C is this correct? The API 650   code
> section 7-1 that says that  preheat at 10°C
>
> thanks all
>
> Cordial saludo
>
> Kind regards
>
> Saul Vasquez T.
>
> --------------------------------
>
> INGETANQUES LTDA
>
> Cra 8B Nº 190-81  
>
> Tel. 57 (1) 6794382  Fax 57 (1) 6723793
>
> CEL. 320-3469363  y  316-5388051
>
> Bogota D.C.    Colombia.  http://www.ingetanques.com/
>
> P Antes de imprimir este mensaje, asegúrese que es necesario. El medio
> ambiente está en nuestras manos. No malgastes los recursos. Ten en cuenta
> que son limitados.

--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
-~----------~----~----~----~------~----~------~--~---