Manyowa a feteleza amapangidwa makamaka ndi feteleza wosakhazikika, feteleza wachilengedwe, mchere ndi zina zotero.Feteleza wa inorganic mu feteleza wapawiri, monga urea amawononga nkhungu ya mphete, bowo la mphete ndi dzenje lamkati la cone zimavekedwa kwambiri ndi mchere, kotero zinthu za nkhungu za mphete ziyenera kusankhidwa zosapanga dzimbiri X46Cr13.Wophatikiza fetereza mphete kabowo zambiri ndi lalikulu, osiyanasiyana pakati 3.0-6.0mm, chifukwa chachikulu mikangano coefficient, dzenje ndi zovuta kutulutsa.