BS EN 12020-1 pdf free download

BS EN 12020-1 pdf free download.Aluminium and aluminium alloys — Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 — Part 1: Technical conditions for inspection and delivery.
5.2 Quality control The supplier shall be responsible for the performance of all inspection and tests required by the relevant European Standard and/or the particular specification prior to shipment of the product. If the purchaser wishes to inspect the product at the manufacturer’s works, he shall notify the supplier at the time of placing the order. 5.3 Chemical composition limit The chemical composition limit shall be in conformity with the requirements specified in EN 573-3. If the purchaser requires closer limits for elements than those specified in the above standard, these limits shall be according to an agreement between supplier and purchaser and stated in the order document. 5.4 Mechanical properties The mechanical properties shall comply with the requirements of EN 755-2 or those agreed between supplier and purchaser and stated in the order document. Hardness testing may be used for release purposes subject to agreement between supplier and purchaser. 5.5 Freedom from surface defects The extruded visible surface shall be free from defects prejudicial to its suitable and proper use. Slight scoring and other minor defects are permissible providing that values of Rz of 9 µm or Ra of 2 µm a re not exceeded when determined according to EN ISO 4287 and EN ISO 4288. Any discoloration or minor blemishes that are likely to be eliminated by the intended pretreatment for anodizing according to EN 12373-1 or by painting according to EN 12206-1 shall be permitted. Requirements on streaks and surface texture appearance on visible surfaces in mill finish, anodized and painted conditions shall be agreed between supplier and purchaser. 5.6 Tolerances on dimensions and form Tolerances on dimensions and form shall be as specified in EN 12020–2. 5.7 Section mass Specific mass per metre may vary within the minimum and maximum allowances of section dimensions as given in EN 12020–2, if not otherwise agreed between supplier and purchaser. 6 Test procedures 6.1 Sampling 6.1.1 Samples for chemical analysis Sampling shall be carried out at the time of casting according to EN 14361. The average content of each sample shall be within the specification for the chemical composition limits. NOTE EN 14361 includes criteria on how to determine number, volume and shape of samples, about time and location of sampling and about the design and maintenance of the tools, in order to make sure that the average chemical composition of the sample is representative of the average chemical composition of the whole melt. 6.1.2 Mechanical properties Specimens shall be taken from each sample according to EN 755-1. If required, test pieces for tensile testing shall be prepared according to EN 755-1. 6.2 Test methods 6.2.1 Chemical composition limit The ranges of application and the accuracy of the test procedure used shall be validated and proved by the supplier. In case of dispute concerning the chemical composition limits, referee analysis shall be carried out in accordance with EN 14242. NOTE For the rapid determination of the chemical composition limit different spectral analysis methods are used (e.g. S-OES, XRF, GDOES). For S-OES see EN 14726.BS EN 12020-1  pdf download.