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).
Historical Version s – view previous versions of standard.
The simplest adhesion tests, such as the astm d 05 tape, are purely qualitative and are not designed to quantify adhesion strength except satm assert astm d 05 the adhesion is greater than some arbitrary limiting value. Originally approved in A number in parentheses indicates the year of last reapproval. NOTE 1—The operator must watch closely for cutting into or scratching the?
This is related to the low thickness and the high deposition temperature of these coatings as compared with other TiN layers. It is suggested that the length of the stroke be 6. Webolda PDF this is a blog of hungarian student. If this test method is used as a basis for purchase agreement, maximum precision will be achieved if a given set of referee pencils be agreed upon between the purchaser and the seller.
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. The values given in parentheses are for information ashm. It is the responsibility of the user of this standard astj establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Castor oil is modified chemically by graft copolymerisation with methyl and butyl methacrylates. One of the most ubiquitous and challenging applications for glass today is that of the touch screen on portable devices.
TiN coatings astm d 05 had good adhesion to the substrate. Current specialized glass can be produced with 0 hardness close zstm sapphire, which is 9 on the Mohs scale of hardness compared to 7 for standard glass. The values given in parentheses are for information only. It is the responsibility of the user of this standard to establish appropriate safety and astm d 05 practices and determine the applicability of regulatory limitations astm d 05 to use.
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. Work Item s — proposed revisions of this standard.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. NOTE 2—In conducting the test, if the sharp edge of the lead is slightly chipped or crumbled, the lead must be resharpened. Record each end point if applicable for gouge and scratch hardness see 8.
ASTM D – 05 Standard Test Method for Film Hardness by Pencil Test
Vegetable oil-based polyesters N. For wood pencils, see Fig. D363 effort should be made to standardize the hardness of the lead used and the technique followed. Any defacement of the? ISO D363 of? Summary of Test Method 3.
This test method has also been used to determine the cure of these coatings, especially when forced dried using heat. Significant improvement in the drying time and weather resistance properties of dehydrated castor oil-based polyester resin was obtained by graft copolymerisation with methyl methacrylate and butyl methacrylate.
Test Specimens and Conditions 6. Every effort should be made to standardize the hardness of the lead used and the technique followed. There is significant competition to produce the thinnest, toughest glass for smartphones and tablets.
ASTM D3363 – 05 PDF
Your comments are invited either for revision of this standard or for additional standards and aztm be addressed to ASTM International Headquarters. American Society for Testing and Materials.
Texture is connected with characteristics, processing degrees, construction methods, and the types and elevation styles of buildings. The pencil is held? 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. Exert sufficient uniform pressure downward and forward either to cut or scratch the?
Decorative materials are mainly used as facing for the inside and outside walls of buildings, columns, floors, and ceilings. Work Item s – proposed revisions of this standard. For example, Brinell Hardness HB test is expressed by the pressure loaded astj the press mark per unit area.
Buy x Banner Ads. Currently, front windshields are made of laminated glass with a thin layer of epoxy between two layers of glass that serves to hold the shards together when broken. This compressive state is much stronger than unstressed glass and can also adtm induced chemically by ast, exchange on the surface.
Ceramics are often used where high hardness is required but are usually limited by their lack of toughness. 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.
The modification of polyester resins based on cotton seed oil, linseed oil, soybean oil and sunflower oil with vinyl toluene to improve clarity is also described in the literature. Pencil hardness measurements have been used by the coatings industry for many years to determine the hardness of clear and pigmented organic coating films.