- BS EN ISO-2062 – Textiles. Yarns from packages. Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester
This standard was last reviewed and confirmed in 2015. Therefore this version remains current.
The grip-to-grip distance is 250 mm or 500 mm. The test speed is determined by grip-to-grip distance. With 250 mm grip-to-grip distance, a test speed of 250 mm/min is used and with 500 mm grip-to-grip distance between the grips, the required test speed is 500 mm/min. The maximum stress(tensile force ) and the maximum strain are measured based on strain-stress garaph.
ISO 2062:2009 specifies methods for the determination of the breaking force and elongation at break of textile yarns taken from packages.
Four methods are given:
- A: manual; specimens are taken directly from conditioned packages;
- B: automatic; specimens are taken directly from conditioned packages;
- C: manual; relaxed test skeins are used after conditioning;
- D: manual; specimens are used after wetting.
Method C is used in cases of dispute regarding elongation at break of the yarn.
ISO 2062:2009 specifies methods using constant rate of specimen extension (CRE) tensile testers. Testing on the now obsolete constant rate of travel (CRT) and constant rate of loading (CRL) instruments is covered, for information, in Annex A, in recognition of the fact that these instruments are still in use and can be used by agreement.
ISO 2062:2009 applies to all types of yarns, except glass, elastomeric, aramid, high molecular polyethylene (HMPE), ultra high molecular polyethylene (UHMPE), ceramic and carbon yarns and polyolefin tape.
ISO 2062:2009 is applicable to yarns from packages but can be applied to yarns extracted from fabrics, subject to agreement between the interested parties.
ISO 2062:2009 is intended for the single-end (single-strand) testing of yarns.
Tensile Tests on Sewing Thread According to EN ISO 2062