Mesh bir ah oo aan lahayn (Waxa kale oo loo yaqaan maro silig ah ama silig) waa raagaya, Walax bir ah oo u adkaysata daxalka oo laga tidcay ama laga soo xardhay fiilooyinka birta aan fiicnayn ee heerka sare ah (darajooyinka caadiga ah: 304/304L, 316/316L, 310S). Waxa ay leedahay daloolo lebis ah, xoog adkaysi sare, iyo iska caabin heer sare ah ee miridhku, acids, alkalis, iyo heerkul aad u daran.