If the knife gets dull during the coup test, see point B, this test shall be performed instead. The result is given by a letter, A to F, where F indicates the highest level of protection. If any of these letters is given, this method determines the protection level instead of the coup test.
Determination of resistance to cutting by sharp objects
An alternative cut test is recommended for cut protection gloves. Shall be used in EN388:2016 for cut protection gloves where the cut material dulls the cutting knife during testing. A knife cuts with constant speed but increasing force until the breakthrough of the cut protection material. Level of protection is given in Newton, the force needed for cut through at 20mm cut length.
A - F
Cut Resistance, TDM Test ISO 13997
TDM Cut Test
According to ISO 13997:1999 plain blade with different cutting loads
Method if the blade was dulled during the blade cut test