Gilashin zafin jiki shine nau'in gilashi tare da damuwa na inji na yau da kullun har ma da haɓaka lokuta ta hanyar sanyayawar gaggawa akan gilashin iyo bayan dumama.Danniya na saman ya fi 90mpa, kuma damuwa na gilashin gilashin da ke tsakanin 24mpa zuwa 69mpa.

Tsaro: Ƙananan alveolate ne kawai kamar granules obtuse angle ya faru da zarar gilashin mai zafi ya karye, wanda ke hana cutarwa ga jikin mutum.

Ƙarfin ƙarfi: Ƙarfin gilashin zafin jiki shine sau 4 zuwa 5 na gilashin iyo.

Kwanciyar hankali na thermal: Kyakkyawan kwanciyar hankali na thermal sau 3 fiye da gilashin iyo yana sanya gilashin zafin jiki 300°c girgizar zafi ta tsaya.