Specifications

black fused alumina
1.Al2O3: 85%
2.for sandblasting
3.good hardnss and toughness
4.factory price,free sample

36 mesh black fused alumina grit for sandblasting

 

Introduction

 

Black aluminum oxide fused corundum is also known as low aluminum corundum. It is also a new

type product of polishing material, and it is a dark gray crystal body made α-Al2O3 and ferropicotite

as main ore in the electric arc furnace by smelting the bauxite. It has characteristics of moderate

hardness, high toughness, high temperature resistance, and stable thermal stability. It is mainly

suitable for free grinding, such as coarse grinding before electroplating products, mainly for polishing

and sandblasting of stainless steel, fabricated metal products.

 

 

Application
1.free grinding ,such as glass industry
2.friction products and abrasion resistance ground 
3.refractory material and fire-proof products
4.grinding stone , grinding block ,sand paper ,sand cloth ,sand belt
5.sandpaper and sandblasting ,wet and dry blasting
ducing mold of precision casting and polishing media

Commonly used size : 0-1mm 1-3mm 3-5mm 5-8mm 200# 320# or as your required

 

Chemcal Analysis:

Specifications	Main Chemical Composition %
	Al2O3	Fe2O3	SiO2
BA—1	81—85	9—11	≤8
BA—2	75—80	10—12	≤10

 

Physical properties:

Item	Indicators
Color	Black
Crystal	Trigonal system
Hardness (Mohs)	≥ 9.0
Melting point (°C)	2050
The maximum temperature (°C)	1850
True Density (g/cm3)	≥ 3. 50
Linear expansion coefficient (0-1600 °C)	7-9