Electrode for 17-4 PH cast steel

[Maringan Hutagalung]

Dear all,

Our customer as a pulp and paper mill service are repairing
a liner in a rotor housing, the material is a cast steel type 17-4PH.

For repair of some defect caused corrosion and abrasion wear, they
require an electrode AWS E630.

Does anyone can give an advice for other type of electrode to
substitute a E630 since
we don't have stock of it.

Thanks in advance

Maringan

--
Sent from my mobile device

[Muni Andy]

Dear Maringan,
If you have stock of 25/12 electrode you can use of it.
It is a superior electrode but costlier than the E630.
Muniyandi

[suneel gore]

Sir If 17-4PH is it pre trated to any specfic condition as like 950, 1075 or 1100, 1150 ? If pre trated , then it would be best to use 312 type electrode Regards Suneel Gore --- On Tue, 27/10/09, Maringan Hutagalung <maringan....@gmail.com> wrote:

From cricket scores to your friends. Try the Yahoo! India Homepage!

[PREM SHANKARDUTT NAUTIYAL]

Hi

We weld 17-4PH with E308L electrodes for SMAW process.
I will send you the complete welding procedure tomorrow if you require..

Regards

Prem Nautiyal
Cell:9820313278

On Tue, 27 Oct 2009 18:01:48 +0530 wrote

>Sir
If 17-4PH is it pre trated to any specfic condition as like 950, 1075 or 1100, 1150 ?
If pre trated , then it would be best to use 312 type electrode
Regards
Suneel Gore
>

>--- On Tue, 27/10/09, Maringan Hutagalung wrote:

>

>From: Maringan Hutagalung
>Subject: [MW:3549] Electrode for 17-4 PH cast steel
>To: material...@googlegroups.com
>Date: Tuesday, 27 October, 2009, 12:32 PM
>
>

>Dear all,
>
>Our customer as a pulp and paper mill service are repairing
>a liner in a rotor housing, the material is a cast steel type 17-4PH.
>
>For repair of some defect caused corrosion and abrasion wear, they
>require an electrode AWS E630.
>
>Does anyone can give an advice for other type of electrode to
>substitute a E630 since
>we don't have stock of it.
>
>Thanks in advance
>
>
>Maringan
>
>--
>Sent from my mobile device
>

> From cricket scores to your friends. Try the Yahoo! India Homepage!

PREM S NAUTIYAL
CELL : 9820313278

[Maringan Hutagalung]

Dear all,

Thanks for the replies.

I am trying to recommend them to use Avesta 248 SV rutile electrode
www.avestawelding.com/3206.epibrw
Which I have it on our stock.
I see that the chemicals composition and mechanical properties is only
have a little bit different, while this type of electrode not comply
to AWS E630

@ Prem : I interest to your WPS when you apply E308L for your case,
please send me directly a copy of it.

Thanks for cooperation.



Best regards,
Maringan

[pgos...@sympatico.ca]

Dear Folks,
 

Some notes on 17-4 PH steel are as follows:-

 

Under ideal conditions, the alloy can be best welded when fresh from the mill, and supplied in solution annealed condition. After welding with matching SMAW electrode SFA 5.4 Type 630 or matching GTAW filler metal, one would get the best properties but the weld has to be  aged to get the ASTM/ASME code specified meachanical properties.

 

Generally 17-4 PH steel (UNS 17400) is covered in ASME-Sec-II Part-A , under specification, SA564 Type 630  and by ASTM specification A693 Type 630

 

If the alloy is supplied in solution annealed and aged condition, then welding it in situ with matching 630 electrodes would not be ideal, since the alloy already would have very high strength and very low ductility (typicall 8-14% depending on aging temperature).

 

The only and the best option is to weld with Austenitic S.S electrodes, such as E-ER 308/308L or E-ER-309/309L or Nickel based electrodes such Inconel 82. Use of austenitic electrodes would produce welds of under matching strength, such as:-

• 17-4-PH –Base metal UTS  after solution anneal and aging, ³ 140Ksi
• 308/309L electrodes, undiluted all weld  metal UTS  ³75  Ksi
• Inconel 82 (E-NiCrFe3) electrodes, undiluted all weld  metal UTS  ³  80 Ksi

 

 Welding recommendations, e.g. technique, control of heat input etc  are same as  for 300 series of  austenitic stainless steels.
 

 

Thanks

 

Pradip Goswami

 

Welding Engineer/Specialist

Ontario Power Generation Inc.

Ontario.

 

> Date: Tue, 27 Oct 2009 23:17:45 +0700
> Subject: [MW:3554] Re: Electrode for 17-4 PH cast steel
> From: maringan....@gmail.com
> To: material...@googlegroups.com; novat...@yahoo.co.in

[S.Sankalp]

Hi, 

If the weldment is to be subjected to heat treatment condition H1075, can we still use ER308L for welding 17-4 PH to attain required UTS values ?

Or only ER630 consumable will suffice this requirement.

Regards

Sankalp