-- Ash:≤4%
-- Volatile:11-14%
-- resistance: ≤70μΩm
-- Bulk density:1,410 G/cm3
-- Specific density:≥1,85 G/cm3
-- Compressed strength:≥21 Mpa
-- C.T.E:85℃(±5℃)
-- Other matters:<1%, if over 1%,will deduct into quantity