410S itself is not martensite but this is when you have a weld metal
which is only consisted of 410S not mixture of carbon steel and
410S...
Dilution will occur and chemical analysis of the weld will be totally
different than 410S.
When 410S is deposited on carbon steels, depending on the carbon
content of the substrate, the resulted weld metal will be something
new rather than 410S...
Cr wil be around 6-8% and There will be martensite in resulted weld
metal. This martensite, if exceeds certain levels will be problematic
and should be avoided. Some references recommend a maximum of 30%
martensite in the weld metal microstructure and some allow up to 50%
martensite in the microstructure. This is only achievable by
preheat...
One safe method is to use a buffer layer such as 309L or 310 followed
by a low heat input process like Pulsed-MIG for depositing the 410 (or
410S if it is available) layer to avoid a layer which is over-alloyed
by Cr...
Depending on the client, this becomes a difficult task as the client
does not accept variations in Cr levels in top layer of overlay. So
clear every thing with the client or inspector before proceeding.
Regards
Ramin Kondori
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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>>> materials-welding@googlegroups.com
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>>> materials-welding+unsubscribe@googlegroups.com
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>>>
>>> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=1227
>>> 87&trk=anet_ug_hm
>>>
>>> The views expressed/exchnaged in this group are members personel
>>> views and meant for educational purposes only, Users must take their
>>> own decisions w.r.t. applicable code/standard/contract documents.
>>> ---
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>>
>> --
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>> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=12278
>> 7&trk=anet_ug_hm
>>
>> The views expressed/exchnaged in this group are members personel views
>> and meant for educational purposes only, Users must take their own
>> decisions w.r.t. applicable code/standard/contract documents.
>> ---
>> You received this message because you are subscribed to the Google
>> Groups "Materials & Welding" group.
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>>
>>
>>
>
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> anet_ug_hm
>
> The views expressed/exchnaged in this group are members personel views and
> meant for educational purposes only, Users must take their own decisions
> w.r.t. applicable code/standard/contract documents.
> ---
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> The views expressed/exchnaged in this group are members personel views and
> meant for educational purposes only, Users must take their own decisions
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>
--
*Ramin Kondori*
*Sr. QA/QC Engineer
*
*SINOPEC*
r.kondori@petroyada.com
+98-2123592322
+98-9132150320
--
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To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
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http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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which is only consisted of 410S not mixture of carbon steel and
410S...
Dilution will occur and chemical analysis of the weld will be totally
different than 410S.
When 410S is deposited on carbon steels, depending on the carbon
content of the substrate, the resulted weld metal will be something
new rather than 410S...
Cr wil be around 6-8% and There will be martensite in resulted weld
metal. This martensite, if exceeds certain levels will be problematic
and should be avoided. Some references recommend a maximum of 30%
martensite in the weld metal microstructure and some allow up to 50%
martensite in the microstructure. This is only achievable by
preheat...
One safe method is to use a buffer layer such as 309L or 310 followed
by a low heat input process like Pulsed-MIG for depositing the 410 (or
410S if it is available) layer to avoid a layer which is over-alloyed
by Cr...
Depending on the client, this becomes a difficult task as the client
does not accept variations in Cr levels in top layer of overlay. So
clear every thing with the client or inspector before proceeding.
Regards
Ramin Kondori
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
>>>
>>> --
>>> To post to this group, send email to
>>> materials-welding@googlegroups.com
>>> To unsubscribe from this group, send email to
>>> materials-welding+unsubscribe@googlegroups.com
>>> For more options, visit this group's bolg at
>>> http://materials-welding.blogspot.com/
>>>
>>> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=1227
>>> 87&trk=anet_ug_hm
>>>
>>> The views expressed/exchnaged in this group are members personel
>>> views and meant for educational purposes only, Users must take their
>>> own decisions w.r.t. applicable code/standard/contract documents.
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "Materials & Welding" group.
>>> To unsubscribe from this group and stop receiving emails from it,
>>> send an email to materials-welding+unsubscribe@googlegroups.com.
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>>>
>>>
>>>
>>
>> --
>> To post to this group, send email to
>> materials-welding@googlegroups.com
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>> materials-welding+unsubscribe@googlegroups.com
>> For more options, visit this group's bolg at
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>> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=12278
>> 7&trk=anet_ug_hm
>>
>> The views expressed/exchnaged in this group are members personel views
>> and meant for educational purposes only, Users must take their own
>> decisions w.r.t. applicable code/standard/contract documents.
>> ---
>> You received this message because you are subscribed to the Google
>> Groups "Materials & Welding" group.
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>> an email to materials-welding+unsubscribe@googlegroups.com.
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>>
>>
>>
>
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> anet_ug_hm
>
> The views expressed/exchnaged in this group are members personel views and
> meant for educational purposes only, Users must take their own decisions
> w.r.t. applicable code/standard/contract documents.
> ---
> You received this message because you are subscribed to the Google Groups
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>
> The views expressed/exchnaged in this group are members personel views and
> meant for educational purposes only, Users must take their own decisions
> w.r.t. applicable code/standard/contract documents.
> ---
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>
>
--
*Ramin Kondori*
*Sr. QA/QC Engineer
*
*SINOPEC*
r.kondori@petroyada.com
+98-2123592322
+98-9132150320
--
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