It is a test method to determine the resistance of a security screen infill material to a specified level of attack by a heavy duty knife. The knife is set to strike the infill panel a number of times under a constant force: vertical force of 150 N; horizontal force of 350 N; speed of 6 mm per second. MAJESTEC™ high-tensile mesh infill passes all relevant Knife Shear Test (AS 5041-2003), ensuring that MAJESTEC™™ Doors and Windows definitely meet and exceed the “Security” level.