RE: [MW:4119] Low hydrogen electrodes for station piping

 

 

I disagree. Low hydrogen is not stronger weld metal than cellulosic – check the AWS strength classes. Do however agree that low hydrogen weld metal is less susceptable to hydrogen induced cracking

 

John du Plessis

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of michael lawrence
Sent: 21 January 2010 12:51 AM
To: materials-welding@googlegroups.com
Cc: michael lawrence
Subject: Re: [MW:4114] Low hydrogen electrodes for station piping

 

because low hydrogen is a stronger weld material and less hydrogen content so less cracking in the weld and heat afected zone area.

 

 

regards

mike.

----- Original Message -----

From: Gulam kader

To: materials-welding@googlegroups.com

Sent: Wednesday, January 20, 2010 9:54 AM

Subject: [MW:4104] Low hydrogen electrodes for station piping

 

Dear all,

 

why we are always using low hydrogen electrodes for station piping instead of cellulose electrode. somebody can explain please?

 

Regards,

 

Gulam Kader

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