BS EN 1706:2020 pdf free.Aluminium and aluminium alloys-Castings-Chemical composition and mechanical properties.
BS EN 1706 1 Scope 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 for a 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. Forundated references, the latest edition of the referenced document (including any amendments) applies. EN 576, Aluminium and aluminium alloys一- Unalloyed aluminium ingots for remelting一Specifications EN 1559-1, Founding一Technical conditions of delivery一Part 1: General EN 1559-4，Founding 一Technical conditions of delivery 一Part 4: Additional requirements for aluminium alloy castings EN 1780- 1, Aluminium and aluminium alloys 一Designation of alloyed aluminium ingots for remelting, master alloys and castings 一Part 1: Numerical designation system EN 1780-2, Aluminium and aluminium alloys 一Designation of alloyed aluminium ingots for remelting,
master alloys and castings一Part 2: Chemical symbol based designation system.EN 1780-3, Aluminium and aluminium alloys 一Designation of alloyed aluminium ingots for remelting, master alloys and castings 一Part 3: Writing rules for chemical composition
EN ISO 6892-1, Metallic materials一Tensile testing- Part 1: Method of test at room temperature (ISO 6892-1)
EN ISO 6506- 1, Metallic materials一Brinell hardness test – Part 1: Test method (ISO 6506-1)
EN 12258-1:2012, Aluminium and aluminium alloys一Terms and definitions一Part 1: General terms 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:
Chemical composition shall be expressed in accordance with the writing rules given in EN 1780-3. The chemical composition of aluminium castings shall be in conformity with the limits specified in Table 1. NOTE Table 1 also includes the chemical compositions of ingots used to produce castings. These are shown in brackets where they differ from the casting limits and are taken from EN 1676.
The chemical analysis of elements for which specific limits are given in Table 1 shall be carried out. By agreement between supplier and purchaser other elements may be determined. This particularly applies to modifying or refining elements such as sodium, strontium, antimony and phosphorus. Alloying elements and impurities shall be expressed in the following sequence: silicon, iron, copper, manganese, magnesium, chromium, nickel, zinc, lead, tin, titanium, other elements each/total, aluminium. Additional specified elements with specific limits shall be inserted, in alphabetical order with respect to their chemical symbols after titanium, or be specified in footnotes.BS EN 1706 pdf download.