... (1000000 times),EN12568,CSA standard .pls find the test report of our safety shoes steel insole as follow:1. penetration resistance for ... 1X106 flexes Requirment:No crack after 1X106 flexes3. corrosion resostance of metal penetration insert (BS EN12568:1998,1%salt solution , ... corrosionRequirment:they shall exhibit no more than five areas of corrosion ,none of which shall exceed 2.5mm2 in area