SS-EN-ISO-20753 Plastics - Test specimens (ISO 20753:2018)

SS-EN-ISO-20753 - 2018 EDITION - CURRENT
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This document specifies dimensional requirements relating to test specimens prepared from plastics materials intended for processing by moulding, as well as to test specimens prepared by machining from sheets or shaped articles. It compiles the designations and dimensions of test specimens used for the acquisition of comparable data and also of other frequently used specimens. The following types of test specimen are specified: a) Type A1 and type A2 specimens (1 = injection moulded, 2 = machined from a sheet or shaped article) These are tensile test specimens from which, with simple machining, specimens for a variety of other tests can be taken (see Annex A). The type A1 specimen is a multipurpose test specimen. The principal advantage of a multipurpose test specimen is that it allows all the test methods mentioned in Annex A to be carried out by all test laboratories on the basis of comparable mouldings. Consequently, the properties measured are coherent as all are measured using similar specimens prepared in the same way. In other words, it can be expected that test results for a given set of specimens will not vary appreciably due to unintentionally different moulding conditions. On the other hand, if desired, the influence of moulding conditions and/or different states of the specimens can be assessed without difficulty for all of the properties measured. Also described are reduced-scale test specimens designated type Axy, where x is the number indicating the method of specimen preparation (1 = injection moulded, 2 = machined from a sheet or shaped article) and y is a number indicating the scale factor (1:y). These can be used e.g. when full-sized test specimens are not convenient or when sample material exists in small quantities only. b) Type B specimens These are bar specimens which can be directly moulded or can be machined from the central section of type A1 specimens or from sheets or shaped articles. c) Type C specimens These are small tensil...

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83.080.01 (Plastics in general)

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Designation Name

SS-EN ISO 20753:2018

Revision Level

2018 EDITION

Status

Current

Publication Date

Dec. 4, 2018

Language(s)

English

Page Count

28

International Equivalent

EN ISO 20753:2018(IDT); ISO 20753:2018(IDT)