Nemicals, zvinhu zvakaita saSilicon, Sulfu, Copper, Carmin, Titanium, Simbi, Boron. Sekureva kweASTM B670 Spection, inconel Spection, inconel 718 din 2.4668 mahwendefa anofanirwawo kufunga nezve kusimba kwesimba, goho righiyo uye yekuwedzera zvinodiwa. Pamusoro pezvo, Alloy 718 Nickel Gasket Stock inodiwa kuti uve kushushikana-kuputika kwakaedzwa maererano neiyo ASTM Gwaro rakanyorwa pano.