High hardness, big density, low wear lost, good nomalization, good corrosion-resistance.

The products are featured by high hardness, big density, low wear lost, good nomalization, good corrosion-resistanceetc. 

1. Chemical Composition

	Al2O3	SiO2	Fe2O3	CaO	MgO	T:O2	Na2O
HL-50	≥ 50	≥ 47	≤ 1.0	≤ 0.5	≤ 0.5		≤ 1
HL-70	≥ 70	≥ 23	≤ 0.8	≤ 1	≤ 1		≤ 1.0
HL-80	≥ 80	≥ 16	≤ 0.5	≤ 0.5	≤ 0.5		≤ 1
HL-90	≥ 90	≥ 6	≤ 0.1	≤ 0.5	≤ 0.5		0.5
HL-99	≥ 99.2	≤ 0.2	≤ 0.05	≤ 0.10	≤ 0.10		0.2
HL-99.7	≥ 99.7	≤ 0.15	≤ 0.05	≤ 0.05	≤ 0.05		0.1

2. Physical Properties

	Physical Density	Water Absorption (%)	Bulk Density	Failure Load	Anti Corrosion	Mohs Hardness
HL-50	≥ 2.4	2	1.4T/m3	≥ 1KN	≥ 95%	6
HL-70	≥ 2.8	2	1.7T/m3	≥ 1.5KN	≥ 97%	7
HL-80	≥ 3.0	2	1.8T/m3	≥ 1.8KN	≥ 98%	7.5
HL-90	≥ 3.4	2	2.0T/m3	≥ 5.5KN	≥ 98%	8

Alumina Filling Ball/Ceramic Filling Ball