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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Standard samples and the test sample are positioned side by side and analyzed for shade variations.
ASTM D – 83 Rpdf全文-调研报告-在线文档
Paul, MN or equivalent, Current edition approved March 25, The ashm levels include low gloss, medium gloss, and high gloss. In the case of a coated steel specimen for example, galvanized steelexamine the tape to FIG.
Surface Gloss Test Standard: This shape leaves a portion of each bend a smooth and uniform manner. This test is performed using the organic solvent methyl ethyl ketone.
Pencil Hardness Test Standard: NOTE 1—The above bends are expanded for clarity. Summary xstm Test Method evaluating the ability of a coating system to withstand the stresses of fabrication. This test is a means of 3.
Surface gloss relates to the light reflectance from a painted surface. This is an accelerated corrosion test for organic coatings. The stability of the coating is measured by applying tape on the reverse direction of the impact area.
The values given in parentheses are for information only. This is a very important color assessment test.
The paint film should not crack while bending the metal. Organic coatings on precoated sheet are subjected to stresses when fabricated into products by roll forming, brake bending, or other deformation processes. The results of this test indicates the degree of curing of the paint film.
The elasticity is measured with the aid of an eye piece after magnifying an image of the paint surface. 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. The reverse impact test is a destructive test. A superscript epsilon indicates an editorial change since the last revision or reapproval.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
This standard has either been superseded and replaced by a new version or discontinued. A number in parentheses indicates the year of last reapproval.
Prepainted Steel Test
The force will vary according to the thickness of the sheet. A noncured paint film has a lower pencil hardness, which makes it more likely to be damaged. 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 astn. The solvent resistance test indicates the stability of a paint film exposed to organic solvents. A “0” T bend is the most critical and 5 T is less critical.
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. 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. This is a paint property that can be varied by the addition of matting agents or dulling agents during paint manufacture.
A bench vise with smooth stresses astn fabricated into products by roll forming, brake jaws or with smooth inserts, preferably of a soft metal to avoid bending, or other deformation processes.
Standard Test Method for Coating Flexibility of Prepainted Sheet
A 2 by 6-in. These stresses can exceed the flexibility or adhesive strength of the coating, resulting in fracture of the coating asttm exposes the substrate, or in the loss of adhesion of the coating to the substrate.
This makes a 1T bend Fig. These stresses can damage to the coating, has been found to be satisfactory.
ASTM D – 10() Standard Test Method for Coating Flexibility of Prepainted Sheet
ASTM D Elasticity refers to the flexibility of the paint film when the metal sheet is subjected to radius bending. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Salt Spray Test Standard: It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The “T”-bend test is a very important test for ensuring the adhesion of the paint film during critical bending of the metal sheet. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Continue to bend the free end around the testing. A greater solvent resistance indicates that the paint film is more stable and durable for outdoor exposure. Visual Color Test Standard: The associated energy transfer will result in loosening of the paint film.
Reverse Impact Test Standard: Elasticity refers to the flexibility of the paint film when the metal sheet is subjected to radius bending. This test is a means of evaluating the ability of a coating system to withstand the stresses of fabrication.
Examine the tape for coating removed from the surface of the specimen that is, pickoff. Both salt performed in a salt spray cabinet.