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D Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol This Model fulfills the requirements of ASTM D and B Designation: D – 95 (Reapproved )e1An American National Standard Standard Test Method for Indentation Hardness of Rig. Buy ASTM D TEST METHOD FOR INDENTATION HARDNESS OF RIGID PLASTICS BY MEANS OF A BARCOL IMPRESSOR from.

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ASTM D e1. A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

The values given in parentheses are for information only. It is the responsibility of the user of this astmm to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Within the range of hardness measured by these Impressors the Model No.

Any test specimen preparation, conditioning, dimensions, or testing parameters or combination thereof covered in the materials speci? If there are no material speci? Table 1 of Classi? The higher the reading the atm the material.


Summary of Test Method 4. Current edition approved October 10, Originally published as D — Last previous edition D — Take care to avoid sliding or scraping while the indentor is in contact with the surface being tested. Record the maximum reading. NOTE 2—It is recommended that measurements be made with the Model Impressor when values above 90 are obtained with the Model Asttm and that measurements be made with satm Model Impressor when values less than 20 are obtained with the Model No.


Values below 10 using the Model Impressor are inexact and should not be reported. NOTE 3—Drift in readings from the maximum may occur in some materials and can be nonlinear with time.

Barcol Hardness ASTM D

Nonhomogeneous Material Reinforced Plastics 30 40 50 60 70 The indicator should now read If it does not, loosen the lock-nut and turn the lower plunger guide in or out to obtain a reading. If these readings cannot be obtained, subsequent measurements are not valid.

Impressions should not be made within 3 mm 1? NOTE 4—Curved surfaces may be more difficult to support. When the load is applied, bending and spring action awtm the specimen should be avoided. Preparation and Operation of Apparatus 8. Place the Wstm and the material to be tested or the calibration disk on a solidly supported,?

If softer supporting surfaces are used, a falsely low instrument reading may occur. Set the legs on the same surface or on solid material of the same thickness, so that the indentor is perpendicular to the surface being tested.

Number of Readings This greater variation may be caused mainly by the difference in hardness between resin and? On reinforced plastics, in order to maintain a variance-of-average of 0. Eight plastic materials of different hardness were evaluated with six different Barcol Impressors. Precision and Bias 6 No. For each material, all the samples were prepared at one source.


Each laboratory obtained three test results for each material. For the materials shown, the indicated number of individual determinations were averaged to calculate each test result as follows: The following explanations of Ir and IR The data in Table 2 should not be rigorously applied to acceptance or rejection of material, as those data are speci?

ASTM D2583

Users of this test method should apply the principles outlined in Practice E to generate data speci? The principles of 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.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Your comments are invited either d583 revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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.