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BS EN 1706:2020 pdf free

BS EN 1706:2020 pdf free.Aluminium and aluminium alloys – Castings – Chemical composition and mechanical properties.
This document specifies the chemical composition limits for aluminium casting alloys and mechanical properties of separately cast test pieces for these alloys.
Annex C is included as a guide to the selection of alloys bra specific use or process.
This document is intended to be used in conjunction with EN 576, EN 1559-1, EN 1559-4, EN 1676 and EN ISO 8062-3.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12258-1:2012 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http:/Jwww.electropedia.org/
• ISO Online browsing platform: available at https:J/www.iso.oriJobp/ui
4 Ordering information
The order document shall include a reference to this document. It shall include all the ordering
information as required in EN 1559-1 and EN 1559-4.
5 Designation systems
5.1 Numerical designation system
The numerical designation system shall be in accordance with EN 1780-1.
5.2 Chemical symbol based designation system
The chemical symbol based designation system shall be in accordance with EN 1780-2. For unalloyed grades, the designation shall be in accordance with EN 576.
5.3 Temper designations
The following abbreviations shall be used as temper designations for the conditions of heat treatment, referred in Tables 2, 3 and 4 and Table A.1:
— T1 as cast;
— T2 annealed;
— T3 controlled cooling from casting and naturally aged;
— T4 solution heat treated and naturally aged where applicable;
— T5 controlled cooling from casting and artificially aged or over-aged;
— T6 solution heat treated and fully artificially aged;
— T64 solution heat treated and artificially under-aged;
— T7 solution heat treated and artificially over-aged (stabilized).
NOTE For aluminium alloy castings, solution heat treatment involves quenching from elevated temperatures and distortion can occur.BS EN 1706 pdf download.

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