Re: [MW:17847] Welding and cladding SA-516 Gr. 60 + AISI 410S

S stands for low carbon,,,,,, pl see ASME sec 9 materials Pno for understanding
Pandithan
Welding Consultant

On 5/30/13, c.nopadon@vipco-thai.com <c.nopadon@vipco-thai.com> wrote:
> 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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