RE: [MW:17841] Welding and cladding SA-516 Gr. 60 + AISI 410S

My memory is stainless steel grade 410 is martensitic and suffix S is
related to welding issue.
Regards,
C.Nopadon

-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of kannayeram
gnanapandithan
Sent: Wednesday, May 29, 2013 12:29 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:17828] Welding and cladding SA-516 Gr. 60 + AISI 410S

SS 410S is not martensitic

On 5/28/13, Ramin Kondori <raminkondori@gmail.com> wrote:
> *Dear Branko:*
>
> Depositing AISI 410S on A516 will produce a martensitic weld overlay
> which is prone to cracking even during welding. There Are two solutions:
>
> 1. Using a buffer layer (intermediate layer) of E309L or even E310L on
> A516 and then Depositing 410S
> 2. Applying preheat of min 250-300 C which makes it a very hard job
> though it may seem less expensive
>
> In first scenario, you do not need any preheat but I do not recommend
> using SAW for 410S layer since it may melt through the buffer layer
> and reach
> A516 which maybe, maybe causes problems. You can use GMAW with Ar+2%o2
> or
> Ar+3%CO2. Do not forget the Preheat...
>
> This way your weld overlay will be thicker than 3 mm and you should
> weld a PQR coupon to make sure you have 3mm of 410 weld layer "over"
> the buffer layer. Maybe you'll have to deposit one buffer (309L or
> 310L) and 2 layers of 410S. Try using Pulsed GMAW to get the results
> with depositing one layer.
>
> One of our colleagues have successfully deposited one layer of 410
> weld overlay on A516 using Pulsed-MIG (Preheat is essential). It's
> because Pulsed-MIG has less dilution and you may achieve required
> results in one layer.
>
> For PQR, you need 4 side bend tests, chemical analysis on the surface
> of overlay and 3-4mm below the surface, and hardness test (on the
surface).
>
> Discuss these issues with your client before proceeding.
> Good Luck
> *Ramin Kondori*
> *Sr. QA/QC Engineer
> *
> *SINOPEC*
>
> r.kondori@petroyada.com
> +98-2123592322
> +98-9132150320
>
>
> On Mon, May 27, 2013 at 4:37 PM, Branko Ferencak <bran2605@gmail.com>
> wrote:
>
>> I have shell 20mm thick ( SA-516 Gr, 60 ) and there must be cladd
>> AISI 410S 3mm Could anybody tell me which filler i can use, for SAW
>> and GMAW?
>> GMAW i planning use for flanges and tubesheets ( after i overlay
>> tubesheet - what is procedure for welding tube to tubesheet? ) Also
>> PWHT has been asked by customer after overlay.
>> Can anybody tell the effect of PWHT on SS 410S overlay?
>> What will be the the safe range of temperature of PWHT? ( Also
>> recommended temperatures and times, holding cooling...)
>>
>> Best regards,
>> Branko Ferencak
>>
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