White Fused Alumina Powder is a finer grade White Fused Alumina Powder with main content Aluminium Oxide(Al2O3) made sieved by water pressure. It’s a single crystal, self-sharpening, abrasion-resistant abrasives for precision grinding, polishing, cutting, etc. White Fused Alumina finer grades are further graded into China GB, FEPA, JIS, or ANSI standards for precision abrasives, cutting, blasting, or polishing. It’s also used for precision abrasive tools for special equipment.

White Fused Alumina Fine Powder

Using	Specifications		The main chemical components %
			Al2O3	Fe2O3	SiO2	Na2O	CaO
Refractory	Fine powder	180#—0	≥99.0	<0.05	<0.05	≤0.35	－
		240#-0
		320#-0
Foundry	Fine powder	200#-0	≥99.0	≤0.1	≤0.1	≤0.35	－
		270#-0
		320#-0

White Fused Alumina Powder Micro Series Sizes—JIS Standard

Bonded abrasives micro size distribution
	(μm)				（μm）
	Settlement pipe particle size analysis method				Electric-resistivity grain counter method
	ds0	ds3	ds50	ds94	ds0	ds3	ds50	ds94
#240	127	90	60±4.0	48	127	103	57±3.0	40
#280	112	79	52±3.0	41	112	87	48±3.0	33
#320	98	71	46±2.5	35	98	74	40±2.5	27
#360	86	64	40±2.0	30	86	68	35±2.0	23
#400	75	56	34±2.0	25	75	58	30±2.0	20
#500	65	48	28±2.0	20	63	50	25±2	16
#600	57	43	24.0±1.5	17	52	41	20±1.5	13
#700	50	39	21.0±1.3	14	45	37	17±1.3	11
#800	46	35	18.0±1.0	12	38	31	14±1.0	9
#1000	42	32	15.5±1.0	9.5	32	27	11.5±1.0	7
#1200	39	28	13.0±1.0	7.8	27	23	9.5±0.8	5.5
#1500	36	24	10.5±1.0	6	23	20	8.0±0.6	4.5
#2000	33	21	8.5±0.7	4.7	19	17	6.7±0.6	4
#2500	30	18	7.0±0.7	3.6	16	14	5.5±0.5	3
#3000	28	16	5.7±0.5	2.8	13	11	4.0±0.5	2
#4000			4.7±0.4		11	8	3.0±0.4	1.3
#6000					8	5	2.0±0.4	0.8
#8000					6	3.5	1.2±0.3	0.6（ds75）
#10000							0.8±0.2

White Fused Alumina Powder Micro Series Sizes—FEPA Standard

F230-F2000 bonded abrasives micro size distribution
	(μm)			（μm）
	Settlement pipe particle size analysis method			Photoelectricity settlement method
	ds3	ds50	ds94	ds3	ds50	ds94
F230	77	55.7±3.0	38	82	53.0±3.0	34
F240	68	47.5±2.0	32	70	44.5±2.0	28
F280	60	39.9±1.5	25	59	36.5±1.5	22
F320	52	32.8±1.5	19	49	29.2±1.5	16.5
F360	46	26.7±1.5	14	40	22.8±1.5	12
F400	39	21.4±1.0	10	32	17.3±1.0	8
F500	34	17.1±1.0	7	25	12.8±1.0	5
F600	30	13.7±1.0	4.6	19	9.3±1.0	3
F800	26	11.0±1.0	3.5	14	6.5±1.0	2
F1000	23	9.1±0.8	2.4	10	4.5±0.8	1
F1200	20	7.6±0.5	2.4	7	3.0±0.5	80% 1
F1500				5	2.0±0.4	80% 0.8
F2000				3.5	1.2±0.3	80% 0.5
F2500					0.8±0.1
F3000					0.4±0.5

White Fused Alumina Powder Micro Series Sizes—P Standard

	(μm)
	Settlement pipe particle size analysis method
	ds0	ds3	ds50	ds94
P240	110	81.7	58.5±2.0	44.5
P280	101	74	52.2±2.0	39.2
P320	94	66.8	46.2±2.0	34.2
P360	87	60.3	40.5±2.0	29.6
P400	81	58.9	35.5±1.5	25.2
P500	77	48.3	30.2±1.5	21.5
P600	72	43	25.8±1.0	18
P800	67	38.1	21.8±1.0	15.1
P1000	63	33.7	18.3±1.0	12.4
P1200	58	29.7	15.3±1.0	10.2
P1500	58	25.8	12.6±1.0	8.3
P2000	58	22.4	10.3±0.8	6.7
P2500	58	19.3	8.4±0.5	5.4

CHINA GB White Fused Alumina Powder Micro Series Sizes—W Micro National Standard

Size	distribution(μm)
W63	63~50
W50	50~40
W40	40~28
W28	28~20
W20	20~14
W14	14~10
W10	10~7
W7	7~5
W5	5~3.5
W3.5	3.5~2.5
W2.5	2.5~1.5
W1.5	1.5~1
W1	1~0.5
W0.5	0.5~0

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White Fused Alumina Micropowder for Polishing

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