MASTER AbstractA series of austenitic Fe-Cr-Mn steels was exposed to circulating lithium at temperatures up to 500°C. Two groups of the alloys, which contained 12 to 30 wt % Mn and 2 to 20 wt % Cr, were sequentially exposed for periods greater than 3000 h in a type 316 stainless steel thermal convection loop. Mass transfer of manganese caused very large weight losses from the steels containing 30 wt % Mn. However, the actual magnitude of corrosion losses for alloys containing 12 to 20 wt % Mn was difficult to establish due to competing surface reactions involving chromium. DISCLAIMERThic report wat prepared at aa aoooaat of work sponsored by aa agency of the United Statas Government. Neither tlie Uafted States. Government aor aay agency thereof, acr any of their emploveei, maket any warranty, express or implied, or anaaiet any legal liabMHy or loaaoaaibility for the aocaracy, completeness, or isefaiatai of aay iaformatioa, apaaraftw, prodact, «r prooeif disclosed, or represoats that its me would aot iafnafe privately owaed lajjhtt. Rafcr* eoce herein to any specific commercial prodact, procon, or twvioe by trade aaaw, ttataMik, maaufactarer, or otherwise doe* not aeooMarily ooaatitaUi or iaeply Hs i meadatioa, or favoriac by the United States Gowmeat or aay agaacy theraoT. He viewt and opiaioas of authors expressed herein do aot aecisssarily Mate or nflect that* of the United States Oownuneat or any anacy thereof.