Pyrolytic graphite ndi mtundu watsopano wa mpweya. Ndi mtundu wa mpweya wa pyrolytic wokhala ndi kristalo wamkulu, womwe umayikidwa ndi mpweya wabwino wa hydrocarbon wapansi pa graphite gawo la 1800 ℃ ~ 2000 ℃ pansi pamavuto ena amoto. Ili ndi kachulukidwe kakang'ono (2.20g / cm), chiyero chambiri (zosakwanira (0.0002%) ndi magwiridwe antchito amagetsi, magetsi, maginito ndi makina.