ASTM D R_信息与通信_工程科技_专业资料。Designation: D – 05 (Reapproved ) Standard Test Method for Film. ASTM A/AM Steel, Sheet and Strip, Heavy-Thickness Coils, Hot- Rolled, Carbon, Commercial, Drawing, Structural, High-Strength Low-Alloy. ASTM: D ECCA: T4. BS EN: ISO: JIS: K Standard supply includes: Pencil Hardness Tester Block. Set of 20 pencils (9B to 9H).
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Work Item s — 0 revisions of this standard. For example, Brinell Hardness HB test is expressed by the pressure loaded on the press mark per unit area. Checks should be made by close visual inspection and by? American Society for Testing and Materials. Set of 20 pencils 9B to 9H.
ASTM D3363 – 05 PDF
Scratch Hardness Aatm terms: Test Specimens and Conditions 6. Pencil scratch testing device.
Historical Version s – view wstm versions of standard. This test method has also been used to determine the cure of these coatings, especially when forced dried using heat.
Current edition approved June 1, This test method has also been used to determine the cure of these coatings, especially when forced dried using heat. Historical Version s — view previous versions of standard.
The holder has to be placed on coated surface and wheels are held between d33663 and the body is rested over the sample. Techstreet standards in subscription. Last previous edition approved in as D — Work Item s – proposed revisions of this standard.
This test method is especially useful in developmental work and in production control testing in a single laboratory. The desired edge may be obtained by cementing the abrasive paper to a? The scratch hardness of such thermosets depends on the overall toughness, whereas gloss is influenced by dimensional stability and smoothness of the surface; generally, they are found to be good.
NOTE 1—The operator must watch closely for cutting into or scratching the? It is the responsibility of the user of this astj to establish appropriate safety and health practices and determine the applicability of astmm limitations prior to use.
This test method is especially useful in developmental work and in axtm control testing in a single laboratory. The exterior durability, weather resistance, drying and mechanical properties of these resins are considerably enhanced.
This test method has also been used to determine the cure of these coatings, especially when forced astm d 05 using heat. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Starting with the hardest lead, hold the pencil or lead holder?
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Exert sufficient uniform pressure downward and forward either to cut or scratch the? ASTM International takes no asym respecting the validity of any patent rights asserted in connection with any item mentioned in this 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.
ASTM D – 05()e2 Standard Test Method for Film Hardness by Pencil Test
It should be recognized that the results obtained may asm between different laboratories when different pencils as well as panels are used. The hardness number is the same as the number of the pencil with one step lower hardness than the pencil that scratches the coating — in other words, the number of the hardest pencil that will not rupture or scratch the coating is the scratch hardness.
This compressive state is much stronger than unstressed glass and can also be induced chemically by ion exchange on the surface.
There is significant competition to produce the thinnest, toughest glass for smartphones and tablets. Originally approved in K Standard supply includes: These results show that the polymers obtained from castor oil exhibited significantly improved modulus, strength and T g over those of soybean oil-based copolymers. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. 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.