BS EN 1676:2020 pdf free download – Aluminium and aluminium alloys一Alloyed ingots for remelting一Specifications.
In recording chemical analysis results, the number representing the result for any value specified in this document shall be expressed to the same number of decimal places as the corresponding number in this document.
The following rounding rules shall be used for determination of compliance with this document:
a) when the figure immediately after the last figure to be retained is less than 5, the last figure to be retained remains unchanged;
b) when the figure immediately after the last figure to be retained is greater than 5, or equal to 5 and followed by at least one figure other than zero, the last figure to be retained is increased by one;
c) when the figure immediately after the last figure to be retained is equal to 5 and followed by zeros only, the last figure to be retained remains unchanged if even, and is increased by one if odd.
See also EN 1780-3.
7 Inspection documents
The producer shall supply the grade of aluminium alloy quoted on the order document. By agreement between the supplier and the purchaser or when specified on the order document, the consignment shall be accompanied by a certificate listing the results of the analysis of the chemical elements noted in Table 1 and any other element which could have been previously requested, as a specific inspection.
8 Marking of products
Unless otherwise indicated on the order document, each unit (i.e. bundle of ingots, T-bar or sow) shall bear one or more marks, which show the following:
— the producer identification;
— the alloy designation;
— the melt number;
— the mass of the unit.
The method of marking is left to the discretion of the supplier, but it shall he sufficiently weather-proof and shall not be a source of contamination.
It is recommended that each unit carries a warning about the risk of explosion when ingots are getting in contact with liquid metal without first being properly dried (see 5.4).
9 Packaging
Small ingots shall be gathered together in bundles, the mass of which should not generally exceed one tonne.
Each bundle shall be made from only one melt.
The packaging shall be sufficiently strong for the bundle to be handled without breakage.
10 Delivery documents
The delivery documents shall accompany the delivery and include:
— the producer identification;
— the order number;
— the alloy designation;
— the melt number(s);
— if required, the results of chemical analysis for all elements for which specific limits are shown in Table 1, in the same sequence as given in Table 1 and for all others additionally required or restricted elements;
— the mass of each unit and the total mass delivered;
— the form of the product.
11 Complaints
Chemical and physical defects can give rise to complaints if they affect the processing or the end use of the relevant finished product.
The purchaser shall enable the supplier to check the grounds of the complaint. He shall provide at least one of the following:
— a piece of relevant ingot, with its complete identification.