Gardner Impact ASTM D, D Falling Dart Impact (Gardner Impact) ASTM D, ASTM D Scope: Falling dart impact, also known as Gardner. This standard is issued under the fixed designation D ; the number 1 This test method is under the jurisdiction of ASTM Committee D20 on Plastics. ASTM D Standard Test Method for Impact Resistance of Flat, Rigid Plastic Specimen by Means of a Striker Impacted by a Falling Weight (Gardner Impact).

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Gardner Impact ASTM D4226, D5420

Formally confirming that your products and services meet all trusted external and internal standards. The test sample rests on a base plate over an opening of specified diameter. PVC 57 lb Base lb Base lb Base Floor This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Use one symbol, such as X, to indicate a failure and a different symbol, such as O, to indicate a nonfailure at each height level. Refer to the appropriate material speci? NOTE 4—As few as ten specimens often yield sufficiently reliable estimates of the mean-failure height. For each material, all samples were prepared at one source, but the individual specimens were prepared at the laboratories that tested them. Different materials respond differently to changes in the velocity of impact.

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. However, the apparatus can be modi?


NOTE 2—Material processing can have a signi? Consider the end use environment and requirements when choosing from the available striker geometries. D — 98a: Machining specimens to reduce thickness variation is not permissible.

Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Last previous edition approved in as D – Certification Formally confirming that your products and services meet all trusted external and internal standards.

Current edition approved February 1, Precision and Bias 4 Validating the specifications, value and safety of your raw atsm, products and assets. A weight is raised inside a guide tube to a predetermined height, then released to drop onto the top of the impactor, forcing the nose through the test sample. A superscript epsilon e indicates an editorial change since the last revision or reapproval.


Raise the weight in the tube to the desired impact value, as shown on the appropriate scale, and release it so that the weight drops on the striker. Auditing Consulting Sourcing Training. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Assurance Enabling you to identify and mitigate the intrinsic risk in atm operations, supply chains and business processes.

In such cases, it is permissible to expose the stressed surface to a penetrating dye, such as gentian violet, to help determine the onset of cracking.

For optimum results using the staircase method, a minimum of 30 test samples are necessary. NOTE 1—Depth of penetration when fully seated shall be D54200 apparatus shall consist of the following: Inspection Validating the specifications, value and safety of your raw materials, products and assets.


Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Historical Version s – view previous versions of standard.

Gardner Impact ASTM D, D

A change of a factor of two in the drop height will cause a change of only 1. Round the top edge of the opening in each specimen-support plate to a 1. Production parts shall be tested in the as-received condition to determine conformance to speci? 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.

Link to Active This link will always route to the current Active version of the standard.

This test astmm be carried out at any reasonable temperature and humidity, thus representing actualuse environments. Send us a request Wilton UK: For some polymers, for example, glassreinforced polyester, it is difficult to assess incipient cracking with the naked eye. Data from only three laboratories were used in calculating the values in these tables.

ASTM D5420

Each wstm result was the mean of multiple individual determinations Bruceton Staircase Procedure 1. Data in these tables are speci? See Test Methods D for descriptions of suitable micrometers.