Stainless steel metallurgy for welded parts: filler selection, sensitization and corrosion resistance.
ER316L adds 2 to 3% molybdenum for chloride resistance; ER308L does not. Compare chemistry, typical strength, and PREN side by side, and learn when the 316L premium is worth paying.
Sensitization strips chromium from grain boundaries and opens the door to intergranular corrosion. Here is how it forms in the HAZ, how to prevent it, and how inspectors test for it.
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