Mostly i have seen SS 321 welded with 347.
Can ER 321 give impact properties at minus 196 degree celcius ?
On Thu, 17 Aug 2017 11:42:30 +0530 Pandithan
>For TIG, try with ER321
On 16-Aug-2017 11:54 PM, PREM SHANKARDUTT NAUTIYAL
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Dear friends
>
>A vessel will be fabricated as per EN 13445 - 2014 edition.
>
>As per contract impact test is mandatory at minus 196 degree Celsius with Min. Impact value of 40J.
>
>Base material is SS 321.
>Thickness ranging from 10mm to 20mm.
>
>Two separate PQR are being conducted as per EN ISO 15614-1.
>
>1. Complete TIG with ER 347 with controlled heat input less than 1KJ/mm
>PQR coupon thickness was 14mm.
> = impact values are coming on weld avg 30J - Failed.
>HAZ = @ 55 J and passing.
>
>Now trying PQR with other brand.
>
>2. Complete MMAW = E 347 - Here consumable manufacturer in India have regretted impact properties at minus 196 degree Celsius.
>
>Both TIG and MMAW consumables are having @ 8 FN.
>
>Then why MMAW Consumable manufacturer in India have regretted impact properties at minus 196 degrees Celsius for MMAW process E347 ?
>
>Difficult to understand !
>
>Regards
>
>Prem Nautiyal
>IWE
>
>
>
>PREM S NAUTIYAL
>CELL : 9769316004
>
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PREM S NAUTIYAL
CELL : 9769316004
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