white corundum 80# for PU scratch resistant coating sponge

white corundum 80# for PU scratch resistant coating sponge 

White corundum a very high purity oxide, and thus recommended when contamination is an issue to be considered.  It is obtained from the fusion of high purity calcined alumina in electric arc furnaces.  The result is a product with high hardness, high friability, high purity, high melting point, and large crystal size.

White corundum Specs:

• Obtained from a reduction fusion of high quality bauxites in electric arc furnaces
• Electroplating Grade
• Very Tough: Hardness Rating of 9 on the Mohs scale
• Can be recycled multiple times
• High Friability – this means it will shatter on impact and break down quickly, see below.
• White in Color
• Perfect for non slip, anti-skid coatings such as epoxy resin systems
• Melting Temperature (C) is 2050
• Alpha macro crystal from trigonal class, hexagonal system.
• 99.4%+ Aluminum Oxide
• All our blasting medias are new, not reclaimed.
• Recommended by OSHA as alternative to silica sand

White corundum (White Fused Aluminium Oxide,/white fused alumina/White Corundum/white aluminum oxide) for abrasives,refractories,sandblasting etc. White Fused Alumina is made from fusion of aluminum oxide, it is white color grits or powder with main content Aluminium Oxide(Al2O3). It has no harm to human body, suitable for normal handling and transportation.

PRODUCE PROCESSING

1,electric melting

2,Cooling

3,Broken

4,Screening

Hardness: 9 Mohs

Specific gravity: 3.95 g / cm³

Bulk density:1.75-1.95g/cm3

Storage conditions: dry and covered

Packing: 25 kg bags, 1 ton per pallet

Chemical composition:

Al₂O₃:  99.5%min

Na₂O:  0.26%max

Fe₂O₃: 0.04 %max

SiO₂: 0.02 %max

Packing

25kgs pvc bag

25kgs pvc bag+1ton big bag

25kgs pvc bag+pallet