Ali,
Yes you are correct, you should require Bi be reported in the material test certificate. I would reject the use of the rod if Bi is above 20ppm for use in high temperature application, 900F-1000F per ASME II-C A8.1.4/API 582 6.4.2.4. I have seen a high temperature stainless weld on an FCC expander fail ~75% of the circumference and it was found to have high Bi in the weld metal.
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Frank Sapienza
Refining Corrosion and Metallurgy Specialist and CCD Project Manager
Becht
New Orleans LA
3522263331
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Original Message:
Sent: 05-12-2020 05:59 PM
From: Ali AlShawaf
Subject: Bismuth In Stainless Steel Welding Consumables
Greetings!
i would like to know if Bismuth is required to be reported in the material testing certificate as per ASME II-C SFA 5.4 Table 1.
Bismuth was mentioned in the notes of the table1 ( note e). so is it an essential element to be reported since we know the effect of Bi in the weld metal? and if Bi content is way above the limit (20PPM), do we reject the use of this welding consumable which will be used in high temperature application?
appreciate it.
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Ali AlShawaf
Lead Engineer
SABIC
AlJubail industerial
966 (13) 359 9136
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