Re: [MW:16453] Preheating regards Tensile strength

Dear Mr.Naresh

 

330.1.1 Requirements and Recommendations.

Required and recommended minimum preheat temperatures

for materials of various P-Numbers are given in

Table 330.1.1. If the ambient temperature is below 0°C

(32°F), the recommendations in Table 330.1.1 become

requirements.

 

Regards

Muthu

On Sun, Jan 6, 2013 at 12:56 PM, Naresh Kumar <snareshkumar30@yahoo.com> wrote:

 

Dear experts,

Asper ASME31.3 table 330.1.1 preheating should be done for all thickness(79 deg C), if tensile strength of base metal exceeds 490MPA.In my project we have 2"OD  and 5.54 thickness with 510MPA tensile strength(Base metal).

 In this case whether preheating is require or not. Kindly give some suggestions.

Thanks & Regards,

Naresh

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