WG 34 - Casting and recycling

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.

This document defines the requirements for grades of alloyed aluminium ingots intended for remelting.
It specifies the classifications and designations applicable to these grades, the conditions in which they are produced, their properties and the marks by which they are identified.

This part of EN 1559 specifies the additional technical delivery conditions for aluminium alloy castings unless other conditions have been agreed at the time of enquiry and order.
This standard retains the same structure and numbering system as used in EN 1559-1 and repeats the numbering of clauses and sub clauses even if nothing extra or different has been added. It also indicates items specific to aluminium alloy castings under existing or new headings.

This European Standard specifies the general requirements to be met by extrusion ingots of aluminium and aluminium alloys obtained by semi-continuous or continuous casting, from primary or recycled metal, for general engineering applications.

This European Standard specifies the general requirements to be met by rolling ingots of aluminium or aluminium alloys obtained by semi-continuous vertical casting.

This EN specifies the requirements for grades of refined aluminium and other unalloyed aluminium in the form of ingots for remelting. It specifies the designations for these grades, the conditions in which they are produced, their properties and the marks by which they are identified.

This European Standard specifies a five-figure numerical designation system for aluminium alloys and master alloys as specified in the relevant European Standards. It applies to ingots for remelting and to castings for all applications including aerospace.
A designation system for unalloyed aluminium is specified in prEN 576. An alternative numerical designation system is specified in prEN 1780-1. Writing rules for chemical composition are specified in prEN 1780-3.
An alternative chemical symbol based designation system is specified in prEN 1780-2. The writing rules for chemical composition are specified in prEN 1780-3.

This European Standard specifies a chemical symbol based designation system for aluminium alloys and master alloys as specified in the relevant European Standards. It applies to ingots for remelting and to castings.
A designation system for unalloyed aluminium is specified in EN 576. An alternative numerical designation system is specified in prEN 1780-1. Writing rules for chemical composition are specified in prEN 1780-3.

This part of prEN 1780 specifies the writing rules for chemical composition of unalloyed aluminium, aluminium alloys and master alloys. Writing rules for unalloyed aluminium are specified in prEN 576. It applies to lingots for remelting and to castings. The five-figure numerical and the chemical symbol based designation systems of materials are specified in prEN 1780-1 and prEN 1780-2, respectively.

This part of this European Standard specifies, characteristics, chemical composition and metal yield of new aluminium scrap consisting of a mix of pieces obtained from two or more wrought aluminium alloys of the same series.

This part of this European Standard specifies characteristics, chemical composition and metal yield of aluminium scrap in the form of turnings consisting of two or more alloys. EXAMPLE Scalpings, millings, borings from plates, extruded profiles, castings etc..

This part of this European Standard specifies characteristics and chemical composition of scrap from aluminium/copper radiators with a copper content sufficiently high to allow its use as alloying material in the production of aluminium alloys. EXAMPLE Prepared radiators from vehicles, refrigerators or from industrial equipment.

This European Standard specifies characteristics, chemical composition and metal yield of decoated aluminium scrap obtained by decoating mixed used aluminium packagings through various processes, e.g. pyrolysis, mechanical delamination, chemical delamination or a combination of these. It also applies to aluminium scrap separated from the bottom ashes of incinerators.
EXAMPLE   A mix of used aluminium packaging scrap of different alloys which were decoated to be used for melting or other forms of metal recycling.

This part of this European Standard specifies requirements for aluminium-containing shredded material mixed with other metals and non-metallic components (rubber, plastic, glass etc) produced by shredding end-of-life vehicles, household appliances etc. It is applicable to material intended for further preparation/selection processes by the user to get the aluminium scrap separated from other foreign materials.

This part of this European Standard specifies characteristics, chemical composition and metal yield of scrap which consists of aluminium turnings of one single wrought or cast specified alloy (e.g. EN 573-3 or EN 1706). EXAMPLE Scalpings, millings, borings from plates, extruded profiles, castings, etc..

This part of this European Standard specifies characteristics, form, chemical composition and metal yield of scrap consisting of used aluminium beverage cans. NOTE 1 This scrap is commercially known as UBC (Used Beverage Cans) NOTE 2 Complete cans, after removal of the liquid content, even if not obtained from post-consumer collection schemes, are within the scope of this standard and are also regarded as UBC.

This part of this European Standard specifies, characteristics, chemical composition and metal yield of scrap consisting of one single wrought aluminium alloy. It does not apply to turnings which are covered by part 12 of this Standard. EXAMPLE Production scraps of sheet, strip, tubes, extruded or drawn profiles, ends of extrusion ingots etc..

This part of this European Standard specifies characteristics, chemical composition and metal yield of aluminium scrap consisting of aluminium castings in entire or fragmented pieces. EXAMPLES - Production scrap from foundries, e. g. rejected pieces and risings ;
- collected castings of various alloys e.g. from maintenance or dismantling of vehicles, household appliances, industrial machinery etc. ;
- selected whole castings, e. g. pistons, wheels.

This part of this European Standard specifies characteristics, chemical composition and metal yield of aluminium scrap (predominantly old scrap) consisting of two or more wrought aluminium alloys. EXAMPLES - Mix of used pots and pans, TV antennas, road signals, car-plates, window frames and other end-of-life aluminium objects ; - scrap from demolition of buildings.

This part of this European Standard specifies characteristics, form, chemical composition and metal yield of scrap consisting of a mixture of used aluminium packagings. This mixture includes aluminium foil laminated with paper or plastics having a metal yield less than 28%.

This European Standard specifies characteristics, chemical composition and metal yield of new and old scrap recovered from wire or cable of unalloyed aluminium with a chemical composition not less than 99,5 % aluminium, or of defined aluminium alloys.
Example
New scrap from manufacturing of cables and wires.
Old scrap from used aluminium cables obtained from dismantling of electrical lines.

This European Standard specifies characteristics, chemical composition and metal yield of unalloyed aluminium scrap with a chemical composition of not less than 99,5 % aluminium.
Example
Production scrap from sheet, strip, tube etc. where unalloyed aluminium is used.
New and old scrap from lithographic sheet.
Old scrap from various products selected to meet the specifications of this standard.

This European Standard specifies general requirements and guidelines for the delivery and classification of the different categories of aluminium scrap, including quality requirements, sampling and tests.
NOTE   Special requirements and guidelines for each of the scrap categories are specified in prEN 13920 2 to prEN 13920 16.

This part of this European Standard specifies the characteristics, chemical composition and metal yield of the aluminium scrap fraction obtained by flotation or other separation processes of non ferrous shredded materials. It applies to scrap consisting mainly of aluminium castings, but also containing aluminium scrap from wrought products. EXAMPLE The aluminium fraction as obtained by flotation of the material described in prEN 132/200-8.

This part of this European Standard specifies characteristics, chemical composition and metal yield of aluminium scrap consisting of skimmings, drosses and spills. It also applies to the metallic obtained by dry processing of drosses and skimmings. Full lots of dross fines with particle size smaller than 0,8 mm, or loft of drosses with a metal yield less than 30% are not within the scope of this Standard.

This European Standard specifies the requirements for the delivery in liquid metal of unalloyed aluminium or aluminium alloys.

This European Standard specifies the requirements for grades of master alloys produced by melting and intended for addition to a melt to adjust composition and/or to control impurities and/or to control the as-cast structure. It specifies the classification and designation applicable to these grades, the conditions in which they are produced, their properties and the marks by which they are identified.