Zipangizo zotentha za bimetallic ndizinthu zophatikizika zophatikizidwa bwino ndi zigawo ziwiri kapena zingapo za ma alloys okhala ndi ma coefficients osiyanasiyana okulitsa. Chosanjikiza cha alloy chokhala ndi coefficient yokulirapo yokulirapo imatchedwa wosanjikiza yogwira, ndipo gawo la alloy lomwe lili ndi kagawo kakang'ono kakukulirakulira amatchedwa passive layer. Chigawo chapakati chowongolera kukana chikhoza kuwonjezeredwa pakati pa zigawo zogwira ntchito ndi zopanda pake. Pamene kutentha kwa chilengedwe kumasintha, chifukwa cha ma coefficients osiyanasiyana okulirapo a zigawo zogwira ntchito ndi zopanda pake, kupindana kapena kuzungulira kudzachitika.