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Heavy Metal Index

Accepted checked before and after the corrosion test and pitting corrosion has been found in the 316 base metal only, while the weld

Source

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Page snapshot
Cited by4 pages
Metals measured2
Evidence tierB
Year2023

Overview

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Key numbers

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  • Received acid (1M, 3M, and 5M) was studied beside sodium chloride NaCl (1 wt%, 3.5 wt%, and 5 wt%). The potentiostat test
  • pitting resistance equivalent number higher than (PREN = wt.%Cr+3.3 wt.%Mo+20 wt.%N) than 40. This has been made possible by high
  • levels of chromium (25-27%), molybdenum (3-4.5%), and intermediate nitrogen mass fractions (0.25-0.28%). Super duplex stainless steels
  • temperatures up to 650 C. These types also provide good ductility and toughness in this temperature range. Corrosion and oxidation resistance
  • is provided primarily by a high chromium content, generally higher than 16 wt% (5). It is found that welding parameters (such as heat input)
  • has been verified, and the results are shown in Table 1.
  • Table 1. Shows the chemical composition of the B.M.s and filler metal
  • ▪ The cold pass (Second pass) heat input is less than the first pass by 20%.
  • 2 Cold pass 78 9.2 85 10 5.55 Argon99.999%
  • acceptable, as shown in Fig. 5.
  • Low heat input and the inter-pass temperature has been used, as mentioned in Table 2. As well as a back copper strip with dimensions (40 x 20
  • chemical analysis in Table 3.
  • Table 3. Chemical composition of the weld metal and base metal
  • 316 (B.M.) Weld metal 2507 (B.M.) Elements %
  • concentrations and 5% NaCl, as shown in Fig. 11. And the Table 4. Demonstrate the corrosion rate of each zone in different concentrations.
  • ▪ The filler metal ER316L is suitable for welding dissimilar metals SDSS AISI 2507 And ASS AISI 316.
  • (6) Verma, J., & Taiwade, R. V. Dissimilar welding behavior of 22% Cr series stainless steel with 316L and its corrosion resistance in modified

Methods (brief)

  • suspensions (0.3 and 0.05 μm). Then the samples were cleaned with water and alcohol then dried by dry air. After polishing, the specimen shall

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Verification notes

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Update history

The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.

CommitDateChangeDescription
b01ec52c2026-08-04major2 sections added
d49e450f2026-08-03major5 sections added; narrative text revised