Dear Arun kumar,
ER 347 can be used to weld SS321H and re qualification is not required if already qualified for P8.
Chemical Composition
Represented by ASTM A240 and ASME SA-240 specifications.
Represented by ASTM A240 and ASME SA-240 specifications.
| Element | Weight Percentage Maximum Unless Range is Specified | |
| 321 | 347 | |
| Carbon* | 0.08 | 0.08 |
| Manganese | 2.00 | 2.00 |
| Phosphorus | 0.045 | 0.045 |
| Sulfur | 0.030 | 0.03 |
| Silicon | 0.75 | 0.75 |
| Chromium | 17.00-19.00 | 17.00-19.00 |
| Nickel | 9.00-12.00 | 9.00-13.00 |
| Columbium + Tantalum** | -- | 10xC min to 1.00 max |
| Tantalum | -- | -- |
| Titanium** | 5x(C+N) min to 0.70 max | -- |
| Cobalt | -- | -- |
| Nitrogen | 0.10 | -- |
| Iron | Balance | Balance |
| *Also H grade with Carbon 0.04 – 0.10%. **H grade minimum stabilizer is different formula. | ||
On Sun, Oct 17, 2010 at 4:34 PM, Vanchinath S.A. <vanchinaths@gmail.com> wrote:
no need to requalifyvanchiOn Sun, Oct 17, 2010 at 12:43 PM, ARUN KUMAR <arunku72@hotmail.com> wrote:
Dear All,--
I need your valuable advice on following.
I need to carry out the welding of A312 Gr. TP321 H ( GTAW process) with a WPS qualified for P8- P8 material. In the WPS it is mentioned that to use ER 347 H for welding A312 Gr.TP321 H.
In ASME, section II, there is no F no classification for ER 347 H ( other filler ER308 H & ER316 H are classified in 5.9)
The filler wire is supplied by ESAB and theire Material cert is showing only ER 347 ( SFA 5.9) with carbon % .04 ( As per section II ,Carbon % for ER 347 is max .08%)
Since there is difference in C %, do I need to requalify the WPS using the above filler ( ER 347 with C % .04)?
Thanks and regards,
Arun
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