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.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kannayeram Gnanapandithan
Sent: Monday, October 06, 2014 3:26 AM
To: materials-welding
Subject: Re: [MW:22045] A-number as per ASME section IX.
ER70S-6 is under A no 1 only. Why confusion ???
THANKS & BEST REGARDS
KG.PANDITHAN, AWS-CWI, CSWIP 3.1
CONSULTANT-WELDING & QUALITY
On Mon, Oct 6, 2014 at 12:57 PM, Rajagopal Kannan <rajagopal.kannan@gmail.com> wrote:
Dear John,
ER70S-6 cannot be classified as A-1.
Thanks and Best Regards,
K.Rajagopal
On Fri, Oct 3, 2014 at 10:30 PM, Manoj John <manojacgnr@gmail.com> wrote:
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.
On Tue, Sep 23, 2014 at 10:56 PM, <george.dilintas@gr.bureauveritas.com> wrote:
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
From: "'Prakash Hegde' via Materials & Welding" <materials-welding@googlegroups.com>
To: materials-welding@googlegroups.com
Date: 23/09/2014 13:57
Subject: Re: [MW:21979] A-number as per ASME section IX.
Sent by: materials-welding@googlegroups.com
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 <manojacgnr@gmail.com> wrote:
Subject: [MW:21978] A-number as per ASME section IX.
To: materials-welding@googlegroups.com
Date: Tuesday, 23 September, 2014, 2:11 PM
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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