ALWA POR MINERAL
- is made of mineral particles and a resin binder.
- is porous and produced as a block or slab in our factory in Gronau, Germany.
- has a very smooth surface with good porosity.
- is easily machinable.
- is suitable for:
- vacuum clamping technology,
- filter applications,
- air film and sliding technology and many other applications.
| Characteristic | Norm | Unit | Value |
|---|---|---|---|
| Density | g/cm³ | ~ 1,7 | |
| Hardness | DIN 53505 | Shore D | ~ 87 – 90 |
| Flexural strength | ISO 178 | Mpa | ~ 27 – 29 |
| E-Module | ISO 527 | Mpa | ~ 14520 |
| Impact strength | ISO 179 | KJ/m² | ~ 1,7 |
| Thermal conductivity | ISO 8894 | W/m. K | ~ 1,6 |
| Thermal coefficient of linear expansion | ISO11359 | 10-6K-1 | ~ 26 – 30 |
| Heat resistance | ISO 75 A | °C | ~ 130 |
| Delivery forms: Blocks and slabs are available in different wall thickness (steps of 10 mm) |
|---|
| 200 x 300 x 10 – 150 mm |
| 500 x 500 x 10 – 150 mm |
| 700 x 600 x 10 – 120 mm (NOW available) |
| 1000 x 500 x 10 – 150 mm |
| 1200 x 600 x 10 – 130 mm (NOW available) |
| Tolerance values are between -0 / +2.0 mm in length/width and, concerning the thickness of the slabs, between -0 / +0.5 mm. |
Please consider the different thermal coefficients of linear expansion if ALWA POR MINERAL is screwed on a slab or something is screwed on ALWA POR MINERAL (slab, block or mould). Drill larger holes for the screws into the material, so that the different expansion coefficients can level out. Screw connections which are used several times should be equipped with threaded sleeves.
Versions of ALWA POR MINERAL:
| Article | Average pore diameter | Total porosity |
|---|---|---|
| ALWA POR MINERAL 1 | ~ 5 – 7 µ | ~ 16 – 20% |
| ALWA POR MINERAL 2 | ~ 11 – 13 µ | ~ 16 – 20% |
| ALWA POR MINERAL 3 | ~ 18 – 20 µ | ~ 16 – 20% |
| ALWA POR MINERAL 4 | ~ 28 – 31 µ | ~ 16 – 20% |