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,
  • aeration of aquaria, fish ponds and sewage treatment plants,

  • air film and sliding technology and many other applications.

Product video ALWA POR

Technical data:

Characteristic Norm Unit Value
Density g/cm³ ~ 1.7
Hardness (dot-matrix) DIN 53505 Shore D ~ 87 – 90
Flexural strength DIN 53452 M P A ~ 27 – 29
E-Module DIN 53457-B3 M P A ~ 14520
Impact strength DIN 53453 kJ/m² ~ 1
Thermal coefficient of linear expansion DIN 53752 °C-1 x 10-6 ~ 26 – 30
Thermal conductivity DIN 52612 Wm-1 °C-1 ~ 1.6
Long-term temperature resistance (mould temperature) DIN 53462 °C ~ 130

Delivery forms: Blocks and slabs are available in different wall thicknesses (steps of 10 mm)

  200 x 300 x 20 – 150 mm
  500 x 500 x 20 – 150 mm
  700 x 600 x 20 – 130 mm (NOW available)
1000 x 500 x 20 – 130 mm
1200 x 600 x 20 – 130 mm (NOW available)
The slab tolerance values are between 0 – 0.6 mm in length, width and thickness.

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.

On demand ALWA POR MINERAL can be produced with a smaller average por diameter (~ between 5 – 20 µ).

Versions of ALWA POR MINERAL:

Article Average pore diameter Total porosity
ALWA POR MINERAL ~ 28 – 31 µ ~ 16 – 20 %

Downloads

Product brochure: POROUS SLABS AND BLOCKS ALWA POR