white alundum

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