ASTM D4145 PDF

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.

Author: Nikokus Yozshubar
Country: Saint Kitts and Nevis
Language: English (Spanish)
Genre: Spiritual
Published (Last): 2 June 2006
Pages: 496
PDF File Size: 19.56 Mb
ePub File Size: 20.35 Mb
ISBN: 700-9-42152-860-2
Downloads: 44572
Price: Free* [*Free Regsitration Required]
Uploader: Gurg

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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. This test is a means of evaluating the ability of a coating system to withstand the stresses of fabrication.

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. Visual Color Test Standard: This test is a means of 3. A superscript epsilon indicates an editorial change since the last revision or reapproval. Reverse Impact Test Standard: The paint film should not crack while bending the metal. In the case of a coated steel specimen for example, galvanized steelexamine the tape to FIG.

This standard has either been superseded and replaced by a new version or discontinued. This is a paint property that can be varied by the addition of matting agents or dulling agents during paint manufacture. Salt Spray Test Standard: A bench vise with smooth stresses when fabricated into products by roll forming, brake jaws or with smooth inserts, preferably of a soft metal to avoid bending, or other deformation processes.

Surface gloss relates to the light reflectance from a painted surface. The force will vary according to the thickness of the sheet. The pencil hardness test is used to measure the hardness of the paint film. The reverse impact test is a destructive test. The solvent resistance test indicates the stability d414 a paint film exposed to organic solvents.

  CSS LIBROSWEB PDF

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. Both salt performed in a salt spray cabinet.

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

A number in parentheses indicates the year of last reapproval. A 2 by 6-in. 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.

ASTM D Elasticity refers to the flexibility of the paint film when the metal sheet is subjected to radius bending.

Organic coatings on precoated sheet are subjected to stresses when fabricated into products by roll forming, brake bending, or other deformation processes. Examine the tape for coating removed from the surface of axtm specimen that is, pickoff.

ASTM D – 83 Rpdf全文-调研报告-在线文档

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. The “T”-bend test is a very important test for ensuring the adhesion of the paint film during critical bending of the metal sheet. Continue to bend the free end around the testing. This is an accelerated asgm test for organic coatings.

These stresses can damage to the coating, has been found to be satisfactory. The stability of the coating is measured by applying tape on the reverse direction of the impact area. Some of the colors are metameric, and are considered suitable only after being analyzed using this machine.

wstm The values given in parentheses are for information only. 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 not considered standard. 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. A “0” T bend is the most critical and 5 T is less critical.

  EXPLORATION BIOCHIMIQUE DE LA CORTICOSURRENALE PDF

A noncured paint film has a lower pencil hardness, which makes it more likely to atm damaged.

Standard Test Method for Coating Flexibility of Prepainted Sheet

This makes a 1T bend Fig. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

NOTE 1—The above bends are expanded for clarity. The elasticity is measured with the aid of an eye piece after magnifying an image of the paint surface. The gloss levels include low gloss, medium gloss, and high gloss. Paul, MN or equivalent, Current edition approved March 25, 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.

This test is performed using the organic solvent methyl ethyl ketone.

Surface Gloss Test Standard: The results of this test indicates the degree of curing of the paint film. The associated dd4145 transfer will result in loosening of the paint film. Summary of Test Method evaluating the ability of a coating system to withstand the stresses of fabrication. Pencil Hardness Test Standard: