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Serat Polikristalin / Serat Alumina Massal / Selimut
Serat polycrystalline akeh Kapadhetan kurang, konduktivitas termal kurang, resistance kejut termal apik, suhu kerja dhuwur, stabilitas kimia apik, apik anti-karat etc fitur, kang digunakake digunakake ing metalurgi, construction, keramik, aerospace, militèr etc industri.