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[MW:10154] RE: 10152] PREN Value For Duplex SS

By Materials & Welding

Dear Mr. Verma,

 

You need to calculate your PREN value in order to prove that the materials chemical composition is balanced in such way that the required resistance against pitting corrosion can be guaranteed. For Duplex Stainless Steel most specification require PREN >33 for Super Duplex PREN >40 but client can ask for other values.

 

Met vriendelijke groeten / Best Regards

 

Herman Pieper

 

Pieper Quality Support & Inspection

Phone: +31 (0)521 380083

Fax:     +31 (0)84 7539225

Cell:     +31 (0)6 51691215

www.pieper-qsi.nl

 

Van: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] Namens Prakash.Verma@akersolutions.com
Verzonden: zaterdag 5 maart 2011 8:11
Aan: materials-welding@googlegroups.com
Onderwerp: [MW:10152] PREN Value For Duplex SS

 

 

Hi Experts,

 

1.Why we needed to calculate PREN value for Duplex stainless steel ?Can any one give brief summary for this requirment ?

(Spec ASTM A 790)

 

Thanks To All

 

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With Warm Regards,
Prakash Verma
METALLURGIST-Drilling Riser Systems
QS ENGG.
Aker Solutions Supply chain hub-India
AkerSolutions
Tel.+91-20-66 28 8538
Email. prakash.verma@akersolutions.com

 

 


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