ASTM D(). Standard Test Method for Coating Flexibility of Prepainted Sheet. standard by ASTM International, 09/01/ View all product details. Standard Test Method for Coating Flexibility of Prepainted Sheet – ASTM D . Hide. Search. Start. Standard ASTM standard · ASTM D This professional T-Bend Tester is designed and engineered in accordance with international test standard, e.g. ASTM D (Standard Test Method for.

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Reverse Impact Test Standard: Paul, MN or equivalent, Current edition approved March 25, Surface Gloss Test Standard: Some of the colors are metameric, and are considered suitable only after being analyzed using this machine.

Prepainted Steel Test

The stability of the coating is measured by applying tape on the reverse direction of the impact area. These stresses can exceed the flexibility or adhesive strength of the coating, resulting in fracture of the coating which exposes the substrate, astn 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.

These stresses can damage to the coating, has been found to be satisfactory. ASTM D Elasticity refers to the flexibility of the paint film when the metal sheet is subjected to radius bending. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.

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The values given in parentheses are for information only.

ASTM D – 83 Rpdf全文-调研报告-在线文档

The paint film should not crack while bending the metal. A “0” T bend is the most critical and 5 T is less critical. A noncured paint film has a lower pencil hardness, which makes it more likely to be damaged.

The force will vary according to the thickness of the sheet. Continue to bend the free end around the testing. This shape leaves a portion of each bend a smooth and uniform manner. NOTE 1—The above bends are expanded for clarity. Both salt performed in a salt spray cabinet. A number in parentheses indicates the year of last reapproval.

Surface gloss relates to the light reflectance from a painted surface.

The “T”-bend test is a very important test for ensuring the adhesion of the paint film during critical bending of the metal sheet. A 2 by 6-in.

The gloss levels include low gloss, medium gloss, and high gloss. ASTM D The “T”-bend test is a very important test for ensuring the adhesion of the paint film during critical bending of the metal sheet.

This test involves dropping a mass of about 2 kg from a height of about 70 cm, thereby exerting a falling force of 13 Joules.

ASTM D – 10() Standard Test Method for Coating Flexibility of Prepainted Sheet

This test is a means of 3. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

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This is a very important color assessment test. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are ashm considered standard.

Elasticity refers to the flexibility of the paint film when the metal sheet is subjected to radius bending. The results of this test indicates the degree of curing of the paint film. Salt Spray Test Standard: The pencil hardness test is atm to measure the hardness of the paint film.

The reverse impact test is a destructive test. 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. The elasticity is measured with the aid of an eye piece after magnifying an image of the paint surface. In the case of a coated steel specimen for example, galvanized steelexamine the tape to FIG.

Visual Color Test Standard: