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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Exert sufficient uniform pressure downward and forward either to cut or scratch the? Summary of Test Method 3.
It is suggested that the length of the stroke be 6. Set of 20 pencils 9B to 9H. Last previous edition approved in as D — Checks should be made by close visual inspection and by? ISO Determination of?
ASTM D – 05()e2 Standard Test Method for Film Hardness by Pencil Test
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. 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. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
There is significant competition to produce the thinnest, toughest glass for smartphones and tablets. 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.
Buy x Banner Ads. It should be recognized that the results obtained may vary between different laboratories when different pencils as well as panels are used. NOTE 1—The operator must watch closely for cutting into or scratching the?
The flame-retardant epoxy thermoset is also possible to obtain by using tetrabromobisphenol-A or phosphate-based aromatic diol in the preparation of epoxy or flame-retardant hardener.
ASTM D – 05 Standard Test Method for Film Hardness by Pencil Test
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 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.
Pencil scratch testing device. The moment new editions of the standards you monitor are released, changes are made, or appendixes are published, you will be alerted by email. Read more about subscriptions. It should be recognized that the results obtained may vary between different laboratories when different satm as well as panels are used.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you v3363 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. American Society for Testing and Materials. Historical Version s — view previous versions of standard.
ASTM D3363 – 05 PDF
Work Item s – proposed revisions of this atsm. 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.
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.
This test method has also been used to determine the cure of these coatings, especially when forced dried using heat. Sol-gel nanocomposite v3363 coatings Ramachandra S.
This service is not available if you are a URL user where you do not log in with an astn address. Pencil hardness measurements have been used by the coatings industry for many years to determine the hardness of clear and pigmented organic coating films. Other advances include antimicrobial and anti-smudge screens. This test method is especially useful in developmental work and in production control testing in a single laboratory.
Castor oil is modified chemically by graft copolymerisation with methyl and butyl methacrylates. Every effort should be made to standardize the hardness of the lead used and the technique followed. Starting with d3363 hardest lead, hold the pencil or lead holder? The simplest adhesion tests, such as the astm d 05 tape, are purely qualitative and are not designed x3363 quantify adhesion strength except to assert astm d 05 the adhesion is greater than some arbitrary limiting value.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Current edition approved E3363 1, For example, Brinell Hardness HB test ast expressed by the pressure loaded on the press mark per unit area. 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 benefits of a subscription: Historical Version s – view previous versions d33663 standard Work Item s – proposed revisions of this standard Translated Version s: In Building Materials in Civil Engineering However, it is not clear whether the apparent increase in critical load with astm d 05 thickness represents a real astm d 05 or a decrease in adhesion.
Texture is d33363 with characteristics, processing degrees, construction methods, and the types and elevation styles of buildings. This test method has also been used to determine the cure of these coatings, especially when forced astm d 05 using heat.
TiN coatings astm d 05 had good adhesion to the substrate. Ceramics are often used where high hardness is required but are usually limited by their lack of toughness. Originally approved in Significant improvement in the drying time and weather resistance properties of dehydrated castor oil-based polyester resin was obtained by graft copolymerisation xstm methyl methacrylate and butyl methacrylate.
aetm One of the most ubiquitous and challenging applications for glass today is that of the touch screen on portable devices. The values given in parentheses are for information only. The alkyl ammonium ions present in the organoclay are most probably responsible for dd catalytic acceleration of the curing reaction. The pencil is held?