[MW:22963] RE: 22958] difference between ER70 S-6 and ER70 S-3

Dear Sir,

You have to use ER70S-6 for better impact properties (-30deg.) in the weld metal and also suggested by your client.

If you select low S & P (<0.012%) consumable in ER70S-6 class (100%CO2 shielding) than you can achieved up to -40deg. Impact too.

 

Rgd

P.Tiwari

QA & QC-Head

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com]
Sent: Monday, March 09, 2015 8:23 PM
To: materials-welding@googlegroups.com
Subject: [MW:22958] difference between ER70 S-6 and ER70 S-3

 

Dear expert ;

 

we have  to weld an ammonia liquid line ( temperature of service -33 °c) with ER 70 S-3 for penetration and E 7018 for filling and cap .

 

Our client ask to weld with ER 70 S - 6 because of better impact test proprities.

 

THis is true ?? please give me more details

 

Regards

 

SALHI Raouf

QA/QC Engineer

 

Tel: Morocco +212628979891

      Tunisia +21621458258

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