No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources. The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed & online) and manufacturers’ data. Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon. All information is based on our present knowledge and is given in good faith. In particular, mechanical property requirements vary widely with temper, product and product dimensions. This Data is indicative only and as such is not to be relied upon in place of the full specification. Note that for the purposes of tolerances the alloys are split into two groups: Please refer to the datasheet entitled Aluminium Specifications. Soft (O) temper is now classified H111 and an intermediate temper H112 is introduced.įor alloy 5251 tempers are now shown as H32/H34/H36/H38 (equivalent to H22/H24, etc). €¢ Temper Designations for Non Heat Treatable Alloys – No change to existing tempers but a more comprehensive definition of how tempers are achieved. €¢ Temper Designations for Heat Treatable Alloys – A new wider range of special tempers having up to four digits after the T have been introduced for non-standard applications (e.g. €¢ Alloy Numbering System – No Change. The old BS1474 - 1987 standard has been replaced by a number of EN standards of which the most important are:ĮN12020 - Extruded precision profiles in alloys 6060 & 6063ĮN573-1: Numerical alloy designation systemĮN573-2: Chemical symbol designation systemĮN573-4: Product forms in different alloysįor those familiar with the old BS1474 it is useful to highlight where the new EN standards differ:
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