BS 541:2006 pdf download – Aluminium and aluminium alloys — Rolled products for cans, closures and lids — Specifications
e) quantity:
mass, area or number of pieces;
f) any requirements for inspection documents;
g) any special requirements for packaging:
mass per coil and per packaging unit;
number of sheets per stack;
position of coil axis (vertical or horizontal);
direction of winding (see Clause 10);
design of pallet;
h) any special requirements agreed between supplier and purchaser:
marking of products;
flagging of joints.
4.2 Requirements
4.2.1 Production and manufacturing processes
Unless otherwise specified in the order, the production and manufacturing processes shall be left to the discretion of the manufacturer. Any changes in the processes for subsequent and similar orders which significantly affect the properties of the product, whether or not specified in this standard, shall be agreed by the purchaser.
4.2.2 Quality control
The supplier shall be responsible for the performance of all inspection and tests required by this European Standard and/or the particular specification prior to the shipment of the product.
4.2.3 Chemical composition
The chemical composition shall comply with the requirements as specified in EN 573-3 and for alloy EN AW-5006 as specified in Annex D and EN 602.
4.2.4 Freedom from defects
The product shall be free from defects prejudicial to its suitable and proper use.
4.3Test procedure4.3.1Sampling Samples for chemical analysis
Sampling shall be carried out at the time of casting according to EN 14361.The average content of eachsample shall be within the specification for the chemical composition.
NOTE EN 14361 includes criteria for how to determine the number, volume and shape of samples, the time and loca-tion of sampling and the design and maintenance of the tools, in order to make sure that the average chemical composi-tion of the sample represents the average chemical composition of the whole melt. for mechanical testing Number of specimens
Unless otherwise specified, at least one specimen shall be taken from each master coil of an inspection lot. and size
Specimens shall be taken from samples in such a way that it is possible to orientate the test pieces parallelwith the rolling direction (longitudinal direction).
The specimens shall be sufficiently large enough to allow the manufacture of the test pieces necessary tocarry out the required tests and shall include sufficient metal to allow the manufacture of test pieces for anyretests required. of specimens
Each specimen shall be marked in such a way that, after removal, it is still possible to identify the product fromwhich it was taken and its location and orientation. Test pieces for tensile testing Number of test pieces
One test piece shall be taken from each specimen for the tensile test. The shapes and dimensions for tensiletest pieces shall comply with EN 10002-1. ldentification of the test pieces
Each test piece shall be marked in such a manner that it is possible to identify the inspection lot from which itwas taken and if required, its location and orientation in the product. Machining
Any machining necessary shall be carried out in such a manner that it does not change the characteristics ofthe metal in the test piece. pieces for other tests
For any other tests (e.g. earing, thickness or weight of coatings, lubricants) the procedures shall be agreed between the supplier and purchaser.
4.3.2 Test methods Chemical composition
The ranges of application and the accuracy of the test procedure used shall be validated and proved by thesupplier.
ln case of a dispute concerning the chemical composition, referee analysis shall be carried out in accordancewith EN 14242.
NOTE For rapid determination of the chemical composition,different spectral analysis methods are used (e.g.s-OES,XRF,GDOES).For S-OES see EN 14726. test
The tensile test shall be carried out in accordance with EN 10002-1 on test pieces with a reduced section12,5 mm wide taken parallel with the rolling direction (longitudinal direction). The elongation shall be meas-ured on an original gauge length of 50 mm.Mechanical properties after simulated lacquer stoving shall be de-termined after heat treating the test pieces at 205 °C for 20 min in a laboratory furnace.
For determination of compliance,yield strength and tensile strength values shall be rounded to the nearest1 MPa and elongation values to the nearest 0,1 % using the rounding rules given in Annex B. of dimensions
The dimensions shall be measured by measuring instruments that are accurate to 1/5 of the relevant toler-ance.
All dimensions shall be checked at the ambient temperature of the workshop or laboratory, and, in case ofdispute, at a temperature of(20±2)c. test (anisotropy)
The earing test shall be carried out either in accordance with the relevant European Standard or as agreedbetween the supplier and purchaser. tests
lf other mechanical or physical tests are required (e.g.thickness of coatings, lubricants), these tests shall becarried out either in accordance with the relevant European Standards or as agreed between supplier andpurchaser.