BS ISO 20805:2017 pdf download – Hot-rolled steel sheet in coils of higher yield strength with improved formability and heavy thickness for cold forming 8 Mechanical property tests 8.1 Tensile test The tensile test shall be carried out in accordance with ISO 6892-1. Transverse test pieces shall be taken mid-way between the centre and edge of the sheet as-rolled. 8.2 Impact test While not usually specified, if so agreed at the time of ordering, impact tests may be specified for material ordered according to this document. The test piece shall be taken in the longitudinal direction and the test shall be carried out in accordance with ISO 148-1. Material less than 11 mm in thickness will result in sub-size impact tests. 9 Retests 9.1If any test piece shows defective machining or develops flaws, it shall be discarded and another piece substituted. 9.2 Elongation If the percentage of elongation of any test piece is less than that specified in Table 4 and if any part of the fracture is outside the middle half of the gauge length as scribed before the test, the test shall be discarded and a retest shall be carried out. 9.3 Additional tests If a test does not give the specified results, two more tests shall be carried out at random on the same lot. Both retests shall conform to the requirements of this document; otherwise, the lot shall be rejected. 10 Resubmission 10.1 The manufacturer may resubmit for acceptance the products that have been rejected during earlier inspection because of unsatisfactory properties, after the rejected products have been subjected to a suitable treatment (e.g. selection, heat treatment), which, on request, will be indicated to the purchaser. In this case, the tests shall be carried out as if they applied to a new batch. 10.2 The manufacturer has the right to present the rejected products to a new examination for compliance with the requirements for another grade. 11 Workmanship 11.1 The surface condition shall be that normally obtained in a hot-rolled or hot-rolled descaled product. 11.2 The steel sheet in cut lengths shall be free from laminations, surface flaws and other imperfections that are detrimental to subsequent appropriate processing. 11.3 Processing for shipment in coils does not afford the manufacturer the opportunity to observe readily or to remove imperfect portions, as can be carried out on the cut-length product. However, this does not relieve the manufacturer of...
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