Standard Test Method for Coating Flexibility of Prepainted Sheet

Importancia y uso:

4.1 Organic coatings on precoated sheet are subjected to stresses when fabricated into products by roll forming, brake bending, or other deformation processes. These stresses can exceed the flexibility or adhesive strength of the coating, resulting in fracture of the coating which exposes the substrate, or in the loss of adhesion of the coating to the substrate. This test is a means of evaluating the ability of a coating system to withstand the stresses of fabrication.

4.2 The bend direction, whether the axis of bend is transverse to or along the rolling direction of the metal, and the temperature of the specimen when it is bent can affect the results of this test and should be agreed upon between the supplier and the user.

Subcomité:

D01.53

Referida por:

D3451-24, A0755_A0755M-18R24, D3794-22, D6491-09R23, D2454-23, D6665-24, A1122_A1122M-22, A0755_A0755M-18R24, A1003_A1003M-23E01

Volúmen:

06.02

Número ICS:

87.040 (Paints and varnishes)

Palabras clave:

coating flexibility; prepainted sheet; T-bend flexibility;