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ASTM D2794-93 PDF

Designation: D – 93 (Reapproved ) Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation. Buy ASTM D() Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact) from SAI Global. Purchase your copy of ASTM D – 93() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.

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Injection Molding Testing Equipments. Films generally fail by cracking, which is made more visible by the use of a magni? Thickness Measurement Testing Instruments. Plastic Rope Testing Equipments.

ASTM D2794 – 93(2010)

Density and Specific Gravity Testing Instruments. Interlaboratory agreement is improved when ranking is used in place of numerical values. Electronics and Electrical Testing Equipments. Other gage steel panels may be used if agreed upon between the producer and the user. It aatm the responsibility of the user asfm this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Our Story Why Presto? The value where the results change from mainly passing to mainly failing is the impact failure end point.

Components Material Testing Equipments. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

ASTM_D(Impact)_百度文库

Ink and printability Testing Instruments. Flexible Packaging Testing Equipments.

The head rests on the test panel and the punch is held vertically asgm a guide ring. Impact Strength Testing Instruments. In its use over many years, this test method for impact resistance has been found to be useful in predicting the performance of organic coatings for their ability to resist cracking caused by impacts. Users of this standard zstm expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own ast.

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As coatings such as paint, varnish, conversion coatings, and related coating products are subjected to impact damage during their manufacturing and useful life, this test method for impact asstm has been found to be useful in predicting coating resistance to impact. Select from list below: For tests on coatings for crack formation; breaking off; adhesion and elasticity. By gradually increasing the distance the weight drops, the point at which failure usually occurs can be determined.

Release the weight so that it drops on the indenter. Composites Material Testing Equipments. The indentation can be either an intrusion or an extrusion.

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. Ceramics and Glass Testing Equipments. The indentation can be either an intrusion or an extrusion.

Interlaboratory agreement is improved when ranking is used in place of numerical values.

ASTM D() Standard Testing Instruments

Be sure the panel is? In its use over many years, this test method for impact resistance has been d2794-9 to be useful in predicting the performance of organic coatings for their ability to resist cracking caused by impacts. The organic coatings under test are applied to four or more suitable thin metal panels. A number in parentheses indicates the year of last reapproval. Air Permeability Testing Instruments.

After the coatings have cured, a standard weight is dropped a distance to strike an indenter that deforms the coating and the substrate. Summary of Test Method 4. The presence of cracks will be indicated by an audible alarm. For interlaboratory comparisons, rankings of coatings for impact resistance should be reported. Pulp and Sheet Making Testing Instruments.

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Coatings attached to substrates are subjected to damaging impacts during the manufacture of articles and their use in service. Footwear Industry Testing Equipments. Link to Active This link will always route to the current Active version of the standard.

Once visible cracks have been identified, the test is repeated five times at that level, as well as five times above and below that level. Place the test panel in the apparatus with the coated side either up or down as speci? Non-metal Materials Testing Instruments. Of course, these confirmation tests are conducted in a random order so successive tests are not conducted at the same height or on the same panel.

Blow Molding Testing Equipments.

ASTM D provides a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such a deformation. NOTE 1—The coatings should be applied in accordance with Practices Dor as agreed upon between the producer asrm the user. Universal Impact Testing — ASTM D Touchstone offers various kinds of impact testing including Charpy and Izod impact testing and micro-scale impact tests performed inside a scanning electron microscope.

Films generally fail by cracking see bottom photowhich is made more visible by the use of a magnifier, by the application of a copper sulfate CuSO4 solution on steel, d2794-993 the use of a pin hole detector, or by a ast, test to determine the amount of coating removed.