It should be recognized that the results obtained may vary between different laboratories when different pencils as well as panels are used. Current edition approved June 1, Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. This test method is especially useful in developmental work and in production control testing in a single laboratory. Originally approved in The process is started with the hardest pencil and continued down the scale of hardness to either of two end points: 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.
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Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk astm d3363 infringement of such rights, are entirely their own responsibility.
For wood pencils, see Fig. Historical Version s – view previous versions of standard. Starting with the hardest lead, hold the pencil or lead holder? A number in parentheses indicates the year of last reapproval. Precision and Bias 9.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If this test method is used adtm a basis for purchase agreement, maximum precision will be astm d3363 if a given set of referee pencils be agreed upon between the purchaser and the seller.
For mechanical pencil holders with drawing leads, see Fig. Last previous edition approved in as D — This test method atsm especially useful in developmental work and in production control testing in a single astm d3363.
astm d3363 pencil hardness scale
Originally approved in Every effort should be made to standardize the hardness of the lead used and the technique followed. 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 astm d3363 the? Historical Version s – view previous versions of astm d3363 Work Item s – proposed revisions of this standard Translated Version s: The values given in parentheses are for information only.
ASTM D – 05 Standard Test Method for Film Hardness by Pencil Test
Exert sufficient uniform pressure downward and forward either to cut or scratch the? 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.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as astm d3363 of the standard.
Checks should be made by close visual inspection and by? Pencil hardness measurements have been used by the coatings industry for many years to determine the hardness of clear and pigmented organic coating films.
ISO Determination of? Link to Active This link will always route to the current Active version of the standard. Record d363 end point if applicable for gouge and scratch hardness see 8.
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. NOTE 2—In conducting the test, if the sharp edge of the lead is slightly chipped astm d3363 crumbled, the lead must be resharpened.
Test Specimens and Conditions qstm. This standard has been approved for use by agencies of the Department of Defense. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. The desired edge may be obtained by cementing the abrasive paper to a? Permission rights to photocopy the standard may also be secured from the ASTM website www. It astm d3363 be recognized that the results obtained may vary between different laboratories when d363 pencils as well as panels are used.
Your comments are invited either for revision of this standard or astm d3363 additional standards and should be addressed to ASTM International Headquarters. 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.
The panels used, the curing conditions, and the age of the coating prior to the test shall be within the limits agreed upon between the purchaser and the seller.