white alundum-欧洲杯投注官网

product description：it use the high-quality aluminum oxide powder as material through smelting in electrical furnace, it has the property of white color, high hardness, little bit lower toughness, high purity, excellent self-sharpening, strong grinding, small thermal creating, high efficiency, high anti-acid alkali corrosion , anti-high temperature, good thermal stability. 

physical and chemical indicators:implementation of standards（gb/t2479-1996)

no	item	unit		guarantee value	typical value
1	apparent density	g/cm3		1.56(min)	1.56 to 1.60
2	electrical resistivity	microohm-mu		56(max)	52.0-56.0
3	real density	g/cm3		2.06(min)	2.06-2.10
4	compress strength	mpa		38(min)	38-45
5	co2 reactivity	residue	%	91(min)	91-95
		ash	%	2.5（max）	1.0-2.5
6	air reactivity	residue	%	92(min)	93-97.5
		ash	%	2)	0.1-2.0
7	thermal conductivity	w/mk		3.0(min)	3.0-4.5
8	flexural strength	mpa		9.0(min)	9.0-13.0
9	permeability	npm		2.3(max)	0.5-2.3
10	thermal exposure	k-1		4.0*10-6（max）	3.0-4.0
11	ash	%		0.3(max)	0.5-2.3
12	fe	ppm		374(max)	580-374
13	si	ppm		275(max)	540-275
14	s	%		1.2(max)	1.0-1.2
15	ni	ppm		250(max)	250-182
16	v	ppm		150(max)	69-150
17	na	ppm		100(max)	42-100