WA SANKEI White Fused Alumina ｜ Manufacture and sale of abrasive micro grits Heisei Sankei Co., Ltd.

WA
SANKEI White Fused Alumina

Fused Alumina
Grit Size Particle Size #240〜#8000

SANKEI White Fused Alumina (WA) is a finest micro grit particle that is ground and granulated by our advanced micro grit technology using white fused alumina abrasives as a raw material. Its stable particle shape enables a sharp grit size distribution.

DATA

– Specifications for Particle Size (Electrical Sensing Zone Methods) –

Grit Size	Grit Size Distribution（μm）
Grit Size	maximum particle size in μm	particle size at 3% cumulative height	particle size at 50% cumulative height	particle size at 94% cumulative height
# 240	127 or less	103 or less	57.0±3.0	40 or more
# 280	112 or less	87 or less	48.0±3.0	33 or more
# 320	98 or less	74 or less	40.0±2.5	27 or more
# 360	86 or less	66 or less	35.0±2.0	23or more
# 400	75 or less	58 or less	30.0±2.0	20 or more
# 500	63 or less	50 or less	25.0±2.0	16 or more
# 600	53 or less	43 or less	20.0±1.5	13 or more
# 700	45 or less	37 or less	17.0±1.3	11 or more
# 800	38 or less	31 or less	14.0±1.0	9 or more
# 1000	32 or less	27 or less	11.5±1.0	7 or more
# 1200	27 or less	23 or less	9.5±0.8	5.5 or more
# 1500	23 or less	20 or less	8.0±0.6	4.5 or more
# 2000	19 or less	17 or less	6.7±0.6	4 or more
# 2500	16 or less	14 or less	5.5±0.5	3 or more
# 3000	13 or less	11 or less	4.0±0.5	2 or more
# 4000	11 or less	8 or less	3.0±0.4	1.3 or more
# 6000	8 or less	5 or less	2.0±0.4	0.8 or more
# 8000	6 or less	3.5 or less	1.2±0.3	*(1)0.6 or more

(Note) * (1) Particle size at 75% cumulative height
* The specifications of this product are subject to change without notice. Please check with our sales department.

– Property & Chemical Composition –

Raw Materials	High-purity alumina fused in an electric furnace
Chemical Name	α-Alumina (fused alumina)
Shape	White Corundum Crystals
Fusion Point	2050℃
Hardness	Mohs12

– Quality Standards –

Grit Size	specific gravity	chemical composition　（%）
Grit Size	specific gravity	AI203	Si02	Fe203	Na20
#240～#3000	3.90 or more	99.0 or more	0.3 or less	0.1 or less	0.5 or less
#4000	3.85 or more	98.0 or more	0.5 or less	0.2 or less	0.7 or less
#6000	3.85 or more	97.0 or more	1.0 or less	0.2 or less	0.7 or less
#8000	3.85 or more	96.0 or more	1.5 or less	0.3 or less	0.7 or less

Use- Use -

Materials for precision finishing grindstones (bearing steel, etc.) and polishing grindstones
Coated abrasives
Material for polishing tape
Paint
Resin
Material for fillers for plywood, etc.
Metal