JIS Test Powder (Class 7,8,11)

Reference standard:JIS Z 8901

Material used：KANTO ( Japanese ) loam 　　*Sintered at 800°C, 2hours.

Particle density：2.9～3.1g/cm3

Chemical composition

Chemical composition	% ( mass )
SiO₂	34～40
Fe₂O₃	17～23
AI₂O₃	26～32
CaO	0～3
MgO	0～7
TiO2	0～4
Ignition Loss	0～4

Particle size distribution

Oversize(mass basis)%

Chemical composition	% ( mass )
SiO₂	34～40
Fe₂O₃	17～23
AI₂O₃	26～32
CaO	0～3
MgO	0～7
TiO2	0～4
Ignition Loss	0～4

Particle size distribution

Oversize(mass basis)%

Particle size µm	Class 7	Class 8	Class 11
1			65±5
2			50±5
4			22±3
5	88±5	61±5
6			8±3
8			3±3
10	76±3	43±3
20	62±3	27±3
30	50±3	15±3
40	39±3	9±3
75	20 max.	3 max.