Tóm tắt nội dung: . Purpose / target: The bending test serves the elasticity and the adhesive strength of coatings for the fast evaluation during bending load. 2. Description of the procedure: 2.1) testing sets -- 2,2) to execution the sample sheet metal by hand within 1-2 s around 180° one bends. 2.3) analysis the bending points is examined with the eye on breaks and flakings.