Re: [MW:6444] F91 vs F9 grade flanges

Dear Raghuram & Jignesg Rana

 

• The PMI result is as follows:  Cr-8.66%, Mo-0.96% and V-0.19%
• There is no Cb content
• Intended service of the line is Coke Drum Overhead vapour and Coke drum Blow down vapour line.

 

Regards

Hrishi

 

 

On Wed, Aug 11, 2010 at 4:36 PM, <jignesh.rana@linde-le.com> wrote:

 

Dear Hrishi,

 

Can you share PMI results ?

 

What was the referent standard used  ?

 

Please inform end application of the product also.

 

With Best Regards,

 

Jignesh R Rana

Manager - QA & QC

 

Linde Engineering India Pvt. Ltd.

38, Nutan Bharat Society, Alkapuri, Vadodara 390007, India

Tel.: +91 265 3056789, Fax: +91 265 2335213 , Mobil:  +91 90999 86019

jignesh.rana@linde-le.com, www.linde-india.com

 

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hrishikm07@gmail.com Sent by: materials-welding@googlegroups.com 11-08-10 05:18 Please respond to materials-welding@googlegroups.com

To materials-welding@googlegroups.com cc Subject [MW:6435] F91 vs F9 grade flanges

 

 

 

Hi

 

I have some LA flanges certified as F9 grade as per MTC and TPI certificate. But when I conducted PMI using NITON-XRF machine I have observed presence of Vanadium slightly lower than F91 requirements in some of them.

My query is

 

If it is of F9 why there is Vanadium presence?

 

Can I accept it as F9 grade?

 

Thanks

Hrishi

Sent on my BlackBerry® from Vodafone Essar

 

 

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