 |
Common
corundum NK |
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| Electrocorundum,
new product, brown |
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|
For highly demanding applications in
the abrasives and refractory industry and as blasting agent in the
aluminium, optical and high-grade steel industries.
Antiwear agents, hard concrete |
| Chemical
analysis (average) |
|
|
| Al2O3 |
|
min. |
95,2 % |
| TiO2 |
|
|
2,90 % |
| SiO2 |
|
|
1,30 % |
| Fe2O3 |
|
|
less than 0,2 % |
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| Specific weight: |
|
3,94 g/cm³ |
| Hardness: |
|
Knoop 1800/2100, Mohs 9 |
| Melting point: |
|
2090 °C |
| Grain shape: |
|
angular |
| Bulk weight: |
|
1,5 - 1,9 g/cm³,
depending on grain size |
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| Available grain
sizes are based on the FEPA recommendation. |
| Designation |
Range
of grain sizes |
Bulk
weight |
|
Grains
sizes according to DIN |
| FEPA-No. |
in µm |
in g/cm³ |
|
Grain
sizes in mm |
| No.10 |
1680 - 2380 |
1,84 – 1,97 |
|
3,00 - 6,00 |
| No.12 |
1410 - 2000 |
1,83 – 1,96 |
|
1,00 - 3,00 |
| No.14 |
1190 - 1680 |
1,81 – 1,94 |
|
1,00 - 2,00 |
| No.16 |
1000 - 1410 |
1,80 – 1,93 |
|
0,50 - 1,00 |
| No.20 |
840 - 1190 |
1,79 – 1,91 |
|
0,25 - 0,50 |
| No.24 |
600 - 840 |
1,76 – 1,89 |
|
0,12 - 0,25 |
| No.30 |
500 - 710 |
1,74 – 1,87 |
|
0,06 - 0,12 |
| No.36 |
425 - 600 |
1,72 – 1,85 |
|
0,00 - 1,00 |
| No.40 |
355 - 500 |
1,70 – 1,83 |
|
0,00 - 0,50 |
| No.46 |
300 - 425 |
1,68 – 1,81 |
|
0,00 - 0,15 |
| No.54 |
250 - 355 |
1,66 – 1,79 |
|
|
| No.60 |
210 - 300 |
1,64 – 1,77 |
|
Other |
| No.70 |
180 - 250 |
1,62 – 1,75 |
|
grain sizes |
| No.80 |
150 - 210 |
1,60 – 1,73 |
|
available on request. |
| No.90 |
125 - 180 |
1,58 – 1,71 |
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|
| No.100 |
106 - 150 |
1,57 – 1,70 |
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|
| No.120 |
88 - 125 |
1,56 – 1,69 |
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| No.150 |
63 - 106 |
1,55 – 1,68 |
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| No.180 |
53 - 88 |
1,53 – 1,65 |
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|
| No.220 |
44 - 75 |
1,51 – 1,64 |
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Corundum is not dangerous to health.
Its use is not associated with a danger of silicosis. Corundum is
neither carcinogenic nor toxic. |
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25/50
kg paper bags, palletised on 1 t pallets and shrink wrapped.
1 – 1.5 t big bags with discharge chute on pallet. |
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