Product Data Sheet Version 02 / 2011 SikaBlock® M650 Areas of Application Product Benefits Data control models and cubings Master models in tool and mould construction Manufacture of moulds for low pressure reaction injection moulding Vacuum forming moulds for lower number of pieces Very high dimensional stability Good compressive strength and edge stability Good solvent resistance High heat distortion temperature Easy machinability Low dust formation when milled Dense fine surface and good to varnish Basis Adhesive Filler Polyurethane, reddish brown Biresin ® Kleber braun, two-component-PUR-system, brown Biresin ® Spachtel braun, two-component-polyester-system, brown Physical Data (approx. values) SikaBlock® M650 Density Shore hardness Flexural strength Compressive strength Impact resistance Heat distortion temperature Linear thermal expansion coefficient αT Processing Data Biresin ® Kleber braun Adhesive / Filler Mixing ratio Biresin ® Spachtel braun Setting time Packaging Board materials Biresin® Kleber braun, resin Biresin® G53, hardener Biresin® Spachtel braun, resin BPO-Paste, hardener 1500 mm x 500 mm x 30 mm, 30 pieces / pallet 1500 mm x 500 mm x 50 mm, 25 pieces / pallet 1500 mm x 500 mm x 75 mm, 16 pieces / pallet 1500 mm x 500 mm x 100 mm, 12 pieces / pallet 1500 mm x 500 mm x 150 mm, 8 pieces / pallet 1.5 kg net 4 kg; 0.975 kg net 2 x 8.74 kg net cartridges 6 x 1.76 kg net resin tins in a box 2 x 0.16 kg net sticks (for cartridges) 6 x 0.04 kg net tubes in a box (for tins) SikaBlock® M650 1 7 2 Tooling & Composites Model board

The material must be acclimatised to 18 - 25°C prior to machining. Machining of the block is easily accomplished by sawing, milling and so on with high performance tools or by hand. Bonding areas must be clean, dry and free of dust and grease or oil. For bondings use e. g. Biresin® Kleber braun (for more information see Product Data Sheet). For more information about milling please seek advice from cutting tool manufacturer or our separate leaflet. For correction or finishing of surface use Biresin ® Spachtel braun (for more information see Product Data Sheet). Product has un-limited shelf life...