Black Fused Alumina for Nail
Specifications
1.High temperature resistance2.High toughness
3.Hot stable performance
4.Ash black crystal
5.Free sample
Black fused alumina for hardware
INTRODUCTION:
Black 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.
Physical performance index:
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 |

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