EN 13599-2014 pdf download.Copper and copper alloys – Copper plate , sheet and strip for electrical purposes.
6.8 Surface condition
The products shall be clean and free from Injurious defects which shall be specified by agreement between the purchaser and the supplier at the time of enquiry and order. A superficial film of residual lubricant is normally present on cold rolled products and is permissible unless otherwise specified. Discoloration is permissible as long as it does not impair utilisation.
Special requirements, for the application, e.g. contact area, surface coating. shall be agreed between the purchaser and the supplier [see Clause 5 list entry j)). The dimensions, mechanical and electrical properties of plate, sheet and strip with surface coatings shall be agreed between the purchaser and the supplier.
7 Sampling
7.1 General
When required. (e.g. if necessary in accordance with specified procedures of a suppliers quality management system, or when the purchaser requests inspection documents with test results, or for use in cases of dispute), an inspection lot shall be sampled in accordance with 7.2 and 7.3.
7.2 Analysis
The sampling rate shall be in accordance with ISO 181 1-2. A test sample, depending on the analytical technique to be employed, shall be prepared from each sampling unit and used for the determination of the composition.
When preparing the test sample, care should be taken to avoid contaminating or overheating the test sample. Carbide tipped tools are recommended; steel tools, if used, should be made of magnetic material to assist in the subsequent removal of extraneous iron. If the test samples are in finely divided form (e.g. drillings. millings). they should be treated carefully with a strong magnet to remove any particles of iron introduced during preparation.
In cases of dispute concerning the results of analysis, the full procedure given in ISO 1811-2 should be followed.
Results may be used from analyses carried out at an earlier stage of manufacturing the product. e.g. at the casting or master coil stage. if the material identity is maintained and if the quality management system of the manufacturer is certified e.g. as conforming to EN ISO 9001
7.3 Mechanical and electrical tests
The sampling rate shall be one test sample per master coil. Sampling units shall be selected from the finished products. The test samples shall be Cut from the sampting units. Test samples, and test pieces prepared from them, shall not be subjected to any further treatment, other than any machining operations necessary in the preparation of the test pieces.
8 Test methods
8.1 Analysis
Analysis shall be carried out on the test pieces, or test portions, prepared from the test samples obtained in accordance with 7.2. Except In cases of dispute, the analytical methods used shall be at the discretion of the supplier. In cases of dispute, the methods of analysis to be used shall be in accordance with the appropriate ISO standards agreed between the disputing parties. For expression of results, the rounding rules given in 8,8 shall be used.
8.2 Tensile test
The tensile properties shall be determined in accordance with EN ISO 6892-1 on the test pieces prepared from the test samples obtained in accordance with 7.3, except that the gauge length for determining elongation shall be:
a) for thickness over 2,5 mm. gauge length ‘o = 5,65 J (elongation A);
b) for thickness from 0,10 mm up to and including 2,5 mm, a fixed gauge length of 50 mm (elongation A50 mm).
8.3 Hardness test
The Vickers hardness shall be determined In accordance with EN ISO 6507-1 using a suitable test force selected from those given, on the test pieces prepared from the test samples obtained in accordance with 7.3.
8.4 Bend test
A bend test shall be carried out in accordance with EN ISO 7438 with the bending edge parallel to the direction of rolling, see Figure 2. The test piece shall be at least 10 mm wide and 20 mm long.
For strips with widths 20 mm or wider, the bending edge shall be parallel to the direction of rolling. For strips with widths less than 20 mm, the bending edge shall be transverse to the direction of rolling. The propeily deburred test pieces from strips in the Hi 10 material conditon only shall be bent through 90° using the following bending radii:EN 13599-2014 pdf download.