A-number as per ASME section IX.

[Manoj John]

Dear All,

I have one doubt.

In section IX A-number specified for mild steel is 1 and when we see the chemistry of the filler metal in section II part c the range specified is going beyond the specified limit Si - 1% and Mn - 1.6% as per section IX.  if a batch of carbon steel filler metal having Sil 1.03 and Mn. 1.6 % then in which A-number we can consider and shall we qualified a new procedure for this particular batch and which A-number we will assign.

Thanks in advance,

Manoj.

 

[Prakash Hegde]

Hi!
As per ASME sec IX
the A No is expected Weld chemistry range and for filler metal F no is designated
Moreover for CS welding, while selection of Filler ,you have to give importance to Mechanical properties and not exact matching of chemistry
Regards
Hegde prakash
--------------------------------------------
On Tue, 23/9/14, Manoj John <manoj...@gmail.com> wrote:

Subject: [MW:21978] A-number as per ASME section IX.
To: material...@googlegroups.com
Date: Tuesday, 23 September, 2014, 2:11 PM

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[george....@gr.bureauveritas.com]

Do not worry read QW-404.5 carefully
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager

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  From: Manoj John [manoj...@gmail.com]
  Sent: 09/23/2014 12:41 PM ZE4
  To: material...@googlegroups.com
  Subject: [MW:21978] A-number as per ASME section IX.

Dear All,

I have one doubt.

In section IX A-number specified for mild steel is 1 and when we see the chemistry of the filler metal in section II part c the range specified is going beyond the specified limit Si - 1% and Mn - 1.6% as per section IX.  if a batch of carbon steel filler metal having Sil 1.03 and Mn. 1.6 % then in which A-number we can consider and shall we qualified a new procedure for this particular batch and which A-number we will assign.

Thanks in advance,

Manoj.

 

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[george....@gr.bureauveritas.com]

When the chemical composition of a ferrous filler metal is not matching one of the A-Nos given in the table referenced in QW-404.5, then you have to make reference to the classification of that filler metal.
Then your essential variable is not the A-No any more, but this chemical composition.
Then your PQR is covering WPSs when, besides the other essential and supplementary essential  variables, the chemical composition of the filler metal is within the same range

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS

Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)

"'Prakash Hegde' via Materials & Welding" ---23/09/2014 13:57:57---Hi! As per ASME sec IX

[Manoj John]

Dear All,

Thanks for sharing information.

Please see the specified values for A-number and Filler wire chemistry.  My question if we have a filler wire having Manganese 1.8% and Silicon  1.15% which A-number can be assigned. If we qualified a procedure with a filler wire chemistry within the A-number 1 range, can we use that procedure for any carbon steel filler metal.within the range of specified values for ER 70S-2 or ER 70 S-6

A-No.     Weld DepositAnalysis, %   

                                          C               Cr     Mo         Ni               Mn                  Si

 

1          Mild Steel              0.20              -         -             -            1.60                  1.00

ER70S-6 (SFA 5.18)          0.06– 0.15     0.15    0.15      0.15         1.40 – 1.85        0.80 – 1.15

Please give expert opinion.

Thanks in advance.

Manoj.

[george....@gr.bureauveritas.com]

Two times no
Best regards
Dr Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

HBS Regional Technical Manager

---

  From: Manoj John [manoj...@gmail.com]
  Sent: 10/03/2014 10:30 PM ZE4
  To: material...@googlegroups.com

[Kannayeram Gnanapandithan]

yes, also A2

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[Rajagopal Kannan]

Dear John,

ER70S-6 cannot be classified as A-1.

Thanks and Best Regards,

K.Rajagopal

[Kannayeram Gnanapandithan]

ER70S-6 is under A no 1 only. Why confusion ???

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[John Henning]

Incorrect reply – ER70S-6 is NOT A-no.1

 

If you specify or use simply the ER70S-6 classification, the chemistry potentially lies outside the maximum values for both Manganese and Silicon.  Therefore you cannot state that it is A-No. 1.  You have two choices:  (1) specify that the filler metal you order/purchase must have a CMTR and that the chemistry is limited to a maximum of 1.6% Mn and 1.0% Si or (2) in lieu of A-No. you specify chemistry range, product name and type, or AWS/ASME Classification.

 

See the last paragraph of QW-404.5 as copied below.

 

“In lieu of an A-Number designation, the nominal chemical

composition of the weld deposit shall be indicated on

the WPS and on the PQR.  Designation of nominal chemical

composition may also be by reference to the AWS classification

except for the “G” suffix classification, the manufacturer’s

trade designation, or other established

procurement documents.”

 

Enjoy.

[Arunachalam A]

Check manganese content of ER70-S6. It is more than the limit for A No.1.

Hence WPS should specify the A no. as just ER70S6 only.

Regards,

Arunachalam.A,

Abu Dhabi

00-971-50-5257122

[Rajagopal Kannan]

Dear Sirs,

A doubt in this, if we limit the manganese content in the WPS to A1 requirement, procure the consumable < 1.6 %, can we certify this as A1?

In the event, the consumable used in the PQR qualification is also of Mn<1.6%.

Thanks and Best Regards,

K.Rajagopal

[Kannayeram Gnanapandithan]

A is weld metal chemistry. When ER70S6 is being used with CO2 shielding gas , then weld metal chemistry will come down within A no. 1

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[John Henning]

You have to limit manganese < 1.6% AND silicon < 1.00%.  You will need to verify CMTRs but it then can be given A-no. 1 group. 

 

I prefer ER70S-6 any time I have to have impact testing and PWHT.  Unlike ER70S-2, ER70S-6 stands up to PWHT and gives much better impacts.  The down side is that as welded it tends to be harder than ER70S-2.  We apply the above chemistry restrictions and have no problem obtaining filler metal to meet.  

 

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Rajagopal Kannan

Sent: Tuesday, October 07, 2014 1:35 AM
To: material...@googlegroups.com

[John Henning]

Note that I was referring to using ER70S-6 for GTAW filler metal.  GMAW is another matter.  Sorry if I caused confusion.

[Kannayeram Gnanapandithan]

A no for deposited  weld metal chemistry only

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[Manoj John]

Dear All,

Thanks for sharing information.  

I understood that if the chemistry is not matching with the range specified in section IX A-numbers then we have to mention the AWS specification and chemistry of the filler metal in the WPS/PQR so that we can deposit weld metal within the range specified in the WPS/PQR.

I believe my understanding is correct.

Thanks,

Manoj John.