This part of EN 13523 describesThe procedure for determiningThe resistance to cracking of an organic coatingon a metallic substrate when bent through 1350 to 1800.The degree of adhesion may also be evaluated.Both folding and mandrel methods are considered.The folding method is more often used for practical purposesbut where more precise determinations are required,The mandrel method is recommended.The cylindrical bend method can also be used for a pass/fail decision by using an agreed mandrel.The choice of the appropriate test method is limited byThe thickness andlorThe hardness of the substrate. NOTE-_The feasibility of the test depends onThe tune and thickness of the substrate. DuringThe procedurethe mandrel should not deform.
EN 13523-7:2001 history
2021EN 13523-7:2021 Coil coated metals - Test methods - Part 7: Resistance to cracking on bending (T-bend test)
2014EN 13523-7:2014 Coil coated metals - Test methods - Part 7: Resistance to cracking on bending (T-bend test)
2001EN 13523-7:2001 Coil Coated Metals - Test Methods - Part 7: Resistance to Cracking on Bending (T-Bend Test)