It's Michael with Michael Talks Metal back for part 2 of our series' 2nd installment of How to Read a Material Test Report.
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We're back for the one hundred and twenty second time, picking up where we left off last week in the middle of a type 321 stainless steel certification.

If you have not yet seen last week's video, click here.....

Our next section requires a bit of explanation about a corrosion test, so here goes

Type 321 and its higher carbon version..321H, use an addition of Titanium to preferentially form carbides that otherwise would form with Chromium at grain boundaries.  If Chromium carbides were allowed to form, it would have a negative effect on the corrosion performance of this alloy.  In order to confirm that this alloy has the desired corrosion resistance, it is subjected to an intergranular corrosion test.

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