[MW:14391] RE: 14382] Hardfacing overlay on SA 572 GR 50 PLATE by IRON BASE RODS

You will probably find that a hard facing alloy does not fit any of the chemistry range requirements of QW-422.  However, QW-255.1, “Welding Variables Procedure Specifications (WPS) Gas Metal Arc Welding (GMAW and FCAW)” does not require an A number.  The classification or trade name of the filler metal (QW-404.12) is an essential variable.  Thus, for example, if your procedure qualification hardfacing filler metal was ConformaClad 700^® , which is a proprietary alloy without classification, you may only perform the production overlay with Conforma Clad 700^®.  If on the other hand you used Stellite 6^® , classified as SFA/A .21 ERCCoCr-A, you could use any hard facing filler metal classified SFA/A .21 ERCCoCr-A.

 

John A. Henning

Welding & Materials

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of asad azmi
Sent: Monday, May 28, 2012 9:15 AM
To: materials-welding@googlegroups.com
Subject: [MW:14382] Hardfacing overlay on SA 572 GR 50 PLATE by IRON BASE RODS

 

Dear All,

 

Greetings.

 

A hardfacing overlay has to be carried out on  A572 GR 50 Plate by FCAW - Semiautomatic Process as per ASME SEC IX.

 

rod used will be iron based.

 

please inform me what will be the SFA No. how we can decide A No.

 

Please give code reference.

 

Thanks & Regards

 

Asad Azmi

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