Falling Sand Abrasion Tester
Coatings & Industry > Mechanical properties > Abrasion & Washability
Falling Sand Abrasion Tester (ASTM D 968)
The Falling Sand Abrasion Tester is broadly used to measure the abrasion resistance of paint, lacquers and other organic coatings…
Abrasion resistance is expressed in terms of the volume of abrasive required to wear through a unit thickness of the coating.
The volume of sand required to obtain total erosion of the coating on an approximate 4 mm Ø area with respect to the thickness of the coating indicates the abrasion resistance.
Consumables: ASTM Ottawa Sand, DIN Sand, or artificial corumdum.
Based on a design described in ASTM D 968 and other internationally recognized test standards, the Falling Sand Abrasion Tester consists of funnel which holds the abrasive particles an includes a 60° tapered end that connects to the guide tube.
Standardized abrasive particles placed in the reservoir are released to a guide tube by an abrasive flow gate key.
The guide is a 914 mm straight, smooth-bore tube which contains the abrasive particles as they fall.
Specimens are fixed under the guide tube at a 45° angle in a receptacle that includes an opening at the bottom allowing the abrasive particles to be collected in a container.
In this simple and effective standardized method, the abrasive effect is obtained when standardized sand, placed in the reservoiris released and guided by the tube onto the test specimen, positioned at a 45° angle and at a distance of 25 mm from the lower aperture of the tube.
A sturdy base and support system hold the apparatus in a vertical position.