Suitability of PWHT on ER309L Buttering over CS

[kunalen...@gmail.com]

Dear Experts

Need your expert advice that we have a joint of CS to SS, PWHT is applicable for CS. So planned to go for the buttering with ER309L & then PWHT prior welding with SS. Please advise does ER309L has any adverse effect on it if comes under the PWHT cycle applicable for P1 material.

[Kannayeram Gnanapandithan]

309 weld metal may not be suitable for temperature above 370°C. Due to sigmaphase formation

On Wed, 22 Jul 2020 5:34 pm , <kunalen...@gmail.com> wrote:

Dear Experts

Need your expert advice that we have a joint of CS to SS, PWHT is applicable for CS. So planned to go for the buttering with ER309L & then PWHT prior welding with SS. Please advise does ER309L has any adverse effect on it if comes under the PWHT cycle applicable for P1 material.

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[TDK YOKESH]

You can use Inconel filler for buttering to avoid intermetallic phase formation during pwht. 

On Wed, Jul 22, 2020, 4:04 PM <kunalen...@gmail.com> wrote:

Dear Experts

Need your expert advice that we have a joint of CS to SS, PWHT is applicable for CS. So planned to go for the buttering with ER309L & then PWHT prior welding with SS. Please advise does ER309L has any adverse effect on it if comes under the PWHT cycle applicable for P1 material.

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[pgos...@rogers.com]

Hi Kunalenfield,

 

You may use 309L for buttering on carbon steel and subsequent PWHT, provided the design conditions do not exceed the recommendations of API RP-582 as below. A buttering PQR should be established according to ASME Sec-IX , QW -283 . Typical buttering thickness to lesson the effects of welding on the buttered surface should be 3/16”. Read the details of QW-283 to establish a buttering followed by welding on the same test coupon.

 

Thanks.

 

 

P.Goswami.P.Eng, IWE.

Independent  & Consulting Welding & Metallurgical Specialist

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgos...@rogers.com,pradip....@gmail.com

Cell/Whasapp:1-905-9793232

 

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[erojas]

 The nickel-base alloy filler metals