Monday, September 29, 2014

RE: [MW:22013] Hardness relation with H2S environment

Please refer to the following paper:

 

http://www.documentation.emersonprocess.com/groups/public/documents/reference/d351798x012_09.pdf

 

http://www.twi-global.com/technical-knowledge/job-knowledge/complying-with-nace-hardness-requirements-119/

 

 

Best regards

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PUB:meisam shokri arfaei
Sent: segunda-feira, 29 de setembro de 2014 05:34
To: materials-welding@googlegroups.com
Subject: Re: [MW:22012] Hardness relation with H2S environment

 

I think during hardness you could find exact values related to each area (base metal, weld metal, fusion line and HAZ refer to hardness sketch) but in other tests such as tensile you will find a summary of properties for those areas together (that is not good for root cause analysis or developing design or fit for purpose). 

Also if any doubt remain after hardness, it is practical that you check values again or doing retest. Also check values in relationship with microstructure which are not practical after destructive tests.

 

Regards  

 

On Mon, Sep 29, 2014 at 10:48 AM, Vijay Katkar <katkar.vijay22@gmail.com> wrote:

Hi All,

Why NACE is restricting hardness value? Why Not other properties e.g Yield ... etc.

What is the relations between hardness and cracking behaviour ?

Kindly provide your valuable views on this.

Best regards

Vijay Katkar

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M. Shokri Arfaei

ISA-ISTS - Metallurgy Lab. Manager

ASNT NDT Level III

International Welding Engineer

 

Tel.: +98 21 66282127

Fax: +98 21 66282779

Mob.:+98 912 1394023

 

 

 

 

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