ALWA POR ALUMINIUM
- is made of aluminium or mineral particles and a resin binder.
- is porous and is produced as a block or slab in our factory in Gronau, Germany
- has a very smooth surface structure and a high porosity
- is easily machinable and can be polished to a shiny surface
- is particularly suitable for thermoforming and other vacuum processing, and is also suitable for:
- hot steam or water steam processing (EPS/EPE/EPP)
- vacuum clamping and gripper technology,
- filter applications,
- air film sliding technology,
 |  | |
 |  |  |
| Characteristic | Norm | Unit | Value |
|---|---|---|---|
| ALWA POR ALUMINIUM 1 very smooth surface
ALWA POR ALUMINIUM 2 smooth surface ALWA POR ALUMINIUM 4 good surface | Average pore diameter | µ
µ µ | ~ 6 – 9
~ 12 – 15 ~ 50 – 53 |
| Total porosity | % | ~ 17 – 20 | |
| Hardness (dot-matrix) | Shore D | ~ 87 | |
| Glass transition temperature (TG) | °C | ~ 300 | |
| Long-term heat resistance (mould temperature) | °C | ~ 190 | |
| Density | g/cm³ | ~ 1,8 | |
| E-Module | ISO 178:2011 | M P a | ~ 35 |
| Flexural strength | M P a | ~ 9600 | |
| Thermal coefficient of linear expansion | ISO 11359-2 | [10-6 x K-1 | ~ 27,2 |
| 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 – 120 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 ALUMINIUM is screwed on a slab or something is screwed on ALWA POR ALUMINIUM (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.