00506181 PDF BRITISH STANDARD BS EN 570 1995 Aluminium and aluminium alloys — Impact extrusion slugs obtained from wrought products — Specifications The European Standard EN 570 1994 has the status of[.]
BRITISH STANDARD Aluminium and aluminium alloys — Impact extrusion slugs obtained from wrought products — Specifications The European Standard EN 570:1994 has the status of a British Standard UDC 669.71-412:669.715.018.26-412:621.777.4:620.1 BS EN 570:1995 BS EN 570:1995 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Engineering Sector Board to Technical Committee NFE/35, Light metals and their alloys, upon which the following bodies were represented: Aluminium Federation Aluminium Stockholders’ Association London Metal Exchange Magnesium Industry Council The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of British Welded Aluminium Tube Makers Association of Light Alloy Refiners Limited Institution of Structural Engineers Metal Packaging Manufacturers’ Association This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 April 1995 Amendments issued since publication © BSI 08-1999 Amd No The following BSI references relate to the work on this standard: Committee reference NFE/35 Draft for comment 91/47490 DC ISBN 580 23697 Date Comments BS EN 570:1995 Contents Committees responsible National foreword Foreword Text of EN 570 List of references © BSI 08-1999 Page Inside front cover ii Inside back cover i BS EN 570:1995 National foreword This British Standard has been prepared by Technical Committee NFM/35 and is the English language version of EN 570:1994 Aluminium and aluminium alloys — Impact extrusion slugs obtained from wrought products — Specifications, published by the European Committee for Standardization (CEN) Publication referred to Corresponding British Standard EN 573-3:1994 BS EN 573 Aluminium and aluminium alloys — Chemical composition and form of wrought products Part 3:1995 Chemical composition BS EN 754 Aluminium and aluminium alloys — Cold drawn rod/bar and tube Part 5:1994 Drawn rectangular bars, tolerances on dimensions and forma BS EN 755 Aluminium and aluminium alloys — Extruded rod/bar, tube and profile Part 5:1994 Extruded rectangular bars, tolerances on dimensions and forma BS EN 10204:1991 Metallic products — Types of inspection documents EN 754-5:1994 EN 755-5:1994 EN 10204:1991 a In preparation A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 8, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 08-1999 EUROPEAN STANDARD EN 570 NORME EUROPÉENNE August 1994 EUROPÄISCHE NORM UDC 669.71-412:669.715.018.26-412:621.777.4:620.1 Descriptors: Wrought product, aluminium, aluminium alloy, slug, designation, dimension, dimensional tolerance, form tolerance, chemical composition, mechanical property, surface condition, quality English version Aluminium and aluminium alloys — Impact extrusion slugs obtained from wrought products — Specifications Aluminium et alliages d’aluminium — Pions de filage par choc obtenusà partir de produits corroyés — Spécifications Aluminium und Aluminiumlegierungen — Butzen zum Fließpressen aus Halbzeug hergestellt — Spezifikationen This European Standard was approved by CEN on 1994-08-18 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1994 Copyright reserved to CEN members Ref No EN 570:1994 E EN 570:1994 Foreword This European Standard has been drawn up by CEN/TC 132, Aluminium and aluminium alloys, whose Secretariat is held by the Association Franỗaise de Normalisation (AFNOR) Within its programme of work, Technical Committee CEN/TC 132 entrusted CEN/TC 132/WG 11, Slugs for impact extrusion, to prepare the following standard: EN 570, Aluminium and aluminium alloys — Impact extrusion slugs obtained from wrought products — Specifications This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 1995, and conflicting national standards shall be withdrawn at the latest by February 1995 According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom Contents Foreword Scope Normative references Definitions 3.1 Slug 3.2 Thickness Orders or tenders 4.1 General 4.2 Designation Requirements 5.1 Tolerances on dimensions and form 5.2 Chemical composition 5.3 Mechanical properties 5.4 Other requirements Testing 6.1 Chemical composition 6.2 Brinell hardness 6.3 Surface quality Sampling rate and test certificates Packaging and marking Arbitration Figure Figure Figure Figure Table — Tolerances on diameter of punched slugs Table — Tolerances on diameter of sawn slugs Table — Tolerances on hole diameter of punched slugs Table — Tolerances on outside or inside diameter and wall thickness for sawn slugs Table — Tolerances on length and width of punched rectangular slugs Table — Tolerances on thickness of punched slugs Table — Tolerances on thickness of sawn slugs Table — Material designation and Brinell hardness Page 3 3 3 3 4 6 8 8 8 4 5 5 6 7 © BSI 08-1999 EN 570:1994 Scope This European Standard specifies the technical conditions for inspection and delivery, tolerances on dimensions and form and other requirements for flat or preformed aluminium and aluminium alloy slugs for impact extrusion It applies to slugs produced either by punching of rolled products or by cutting of extruded products This standard does not apply to slugs produced from unwrought cast ingots Slugs covered in this standard are suitable for the manufacture of impact extruded parts for packaging and industrial applications Normative references This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies EN 573-3, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 3: Chemical composition EN 754-5, Aluminium and aluminium alloys — Cold drawn rod/bar and tube — Part 5: Rectangular bars, tolerances on dimensions and form1) EN 755-5, Aluminium and aluminium alloys — Extruded rod/bar, tube and profile — Part 5: Rectangular bars, tolerances on dimensions and form1) EN 10204, Metallic products — Types of inspection documents ISO 6506, Metallic materials — Hardness test — Brinell test Definitions 3.2 thickness in slugs punched from rolled products, the thickness is measured perpendicular to the rolling plane, whilst in slugs cut from extruded products thickness is measured in the extrusion direction Orders or tenders 4.1 General The selection of material and of the condition of supply is at the customer’s discretion It is recommended that, when ordering, the intended use and any further processing envisaged be stated If preformed slugs are required, the type of preforming shall be given when ordering, together with a drawing specifying the details In addition, details on shape and size shall be given in the designation (see 4.2) 4.2 Designation 4.2.1 Standard designation The standard designation shall be given in the following order: — the description of product (slug); — the number of this European Standard; — the slug shape, e.g flat, round with or without hole, rectangular, preformed; — dimensions in millimetres; — the designation of the aluminium or aluminium alloy, see 5.2; — the surface finish, see 5.4.1 4.2.2 Examples of standard designation 4.2.2.1 Round slug without a centre hole (see Figure 1) Description of product, EN number, slug shape: round (rd), diameter × thickness, material designation, e.g Slug EN 570 – rd 24,8 × 4,2 – EN AW-1050A or Slug EN 570 – rd 24,8 × 4,2 – EN AW-A1 99,5 For the purposes of this standard the following definitions apply: 3.1 slug a piece of metal of uniform thickness of regular or irregular shape taken from a wrought product, usually for impact extrusion Slugs are supplied with or without a centre hole 1) Under preparation © BSI 08-1999 EN 570:1994 4.2.3 Designation in order Figure 4.2.2.2 Round slug with a centre hole (see Figure 2) Description of product, EN number, slug shape: round (rd), diameter × thickness × hole diameter (ch), material designation, e.g Slug EN 570 – rd 24,8 × 4,2 × 8ch – EN AW-1050A or Slug EN 570 – rd 24,8 × 4,2 × 8ch – EN AW-A1 99,5 Figure 4.2.2.3 Rectangular slug (see Figure 3) Description of product, EN number, slug shape: rectangular (rect), length × width × thickness, corner radius (R), e.g R1 if mm, material designation, e.g Slug EN 570 – rect 51 × 26,5 × 6,1 × R1 – EN AW – 1050A or Slug EN 570 – rect 51 × 26,5 × 6,1 × R1 – EN AW-A1 99,5 When ordering, the standard designation shall be supplemented by stating as applicable, the mass (preceding the standard designation), the slug shape (flat or preformed), and the surface finish (as specified in 5.4.1), e.g Example: t of round flat slugs without a centre hole with bright surface finish: t Slug EN 570 – flat, bright, rd 29,8 × – EN AW – 1050A or t Slug EN 570 – flat, bright, rd 29,8 × – EN AW-A1 99,5 Requirements 5.1 Tolerances on dimensions and form 5.1.1 General The requirements for tolerances on dimensions and form for slugs manufactured in a flat or preformed shape are specified in 5.1.2 to 5.1.6 The tolerances specified in Table to Table shall apply for slugs after punching or cutting in the bright condition Slugs with a roughened surface shall be assumed to have an average increase in dimensions of 0,05 mm The increase in dimensions depends on the material used and the mass of the slug Particular tolerances for slugs with a roughened surface shall be agreed between supplier and customer The limits of size in the manufacture of punched slugs shall be as follows a) In the case of round slugs, the thickness shall not exceed the diameter b) In the case of rectangular slugs, the thickness shall not exceed the width c) In the case of slugs with a centre hole, the slug thickness shall not exceed the hole diameter If these limits are exceeded, slugs shall be manufactured by cutting 5.1.2 Slug diameter The tolerances specified in Table for punched round slugs and Table for sawn slugs shall apply Figure © BSI 08-1999 EN 570:1994 Table — Tolerances on diameter of punched slugs Table — Tolerances on hole diameter of punched slugs Dimensions in millimetres Slug diameter over — Dimensions in millimetres Tolerancesa Hole diameter up to over Tolerances up to 10 ± 0,02 — 10 ± 0,05 10 40 ± 0,03 10 20 ± 0,07 40 60 ± 0,04 20 — ± 0,1 60 80 ± 0,05 80 120 ± 0,06 120 150 ± 0,08 150 200 ± 0,10 a The The hole eccentricity e shall be determined according to Figure and shall not exceed 0,15 mm tolerances include the circularity tolerance Table — Tolerances on diameter of sawn slugs Dimensions in millimetres Slug diameter over up to U3 6 10 10 18 18 30 30 50 50 65 65 80 80 130 a Tolerancesa – 0,07 – 0,09 – 0,11 – 0,13 The tolerances for the hole diameter include the circularity tolerance – 0,16 5.1.4 Diameters and wall thickness of sawn slugs with a hole – 0,5 The tolerances specified in Table shall apply to sawn slugs with a hole, produced from round tubes with or without extrusion seams – 0,6 – 0,9 The tolerances include the circularity tolerance 5.1.3 Hole diameter of punched slugs The tolerances specified in Table shall apply only for flat slugs with a hole, with the hole diameter not exceeding 40 % of the slug diameter and the slug thickness not exceeding two thirds of the hole diameter In all other cases, the tolerances of the hole diameter shall be agreed between supplier and customer © BSI 08-1999 Figure 5.1.5 Length and width of rectangular slugs The tolerances specified in Table shall apply to punched rectangular slugs For sawn rectangular slugs up to 200 mm the tolerances for the cross-section of the bar as specified in EN 755-5 shall apply If tighter tolerances are needed this shall be specified in the order In this case tolerances as specified in EN 754-5 shall apply EN 570:1994 Table — Tolerances on outside or inside diameter and wall thickness for sawn slugs Dimensions in millimetres Outside diameter or inside diameter over U 15 20 30 50 100 a b up to 20 30 50 100 130 Tolerancesb ± 0,25 ± 0,30 ± 0,30 ± 0,50 ± 0,70 Tolerances on wall thickness Sa for wall thicknesses from 2,5 up to ± 0,25 ± 0,25 ± 0,30 — — over up to — ± 0,30 ± 0,35 ± 0,35 — over up to — — ± 0,40 ± 0,45 ± 0,45 Dimensions in millimetres Length and width over — 10 20 40 60 120 150 Tolerancesa up to 10 20 40 60 120 150 200 ± 0,05 ± 0,08 ± 0,10 ± 0,12 ± 0,14 ± 0,17 ± 0,20 a The corner radius shall not be less than mm and shall be specified in the order 5.1.6 Thickness The tolerances specified given in Table and Table shall apply to the slug thickness Table — Tolerances on thickness of punched slugs Dimensions in millimetres Slug thickness over — 2,8 6,5 8,5 10,5 15 20 25 30 Tolerancesa up to 2,8 6,5 8,5 10,5 15 20 25 30 40 ± 0,03 ± 0,05 ± 0,07 ± 0,10 ± 0,14 ± 0,18 ± 0,22 ± 0,26 ± 0,30 The tolerances apply only to slugs with a maximum thickness not exceeding half the diameter (in the case of round slugs) or not exceeding half the width (in the case of rectangular slugs) In all other cases, the tolerances shall be agreed at the time of ordering — — ± 0,45 ± 0,50 ± 0,50 over 10 up to 15 over 15 up to 20 over 20 up to 25 — — — ± 0,55 ± 0,60 — — — ± 0,60 ± 0,60 — — — — ± 0,60 Including concentricity Including ovality Table — Tolerances on length and width of punched rectangular slugs a over up to 10 When measuring the thickness, the burr arising from punching or the edge radii shall be disregarded When measuring the thickness, the burr arising from cutting or the edge radii shall be disregarded 5.1.7 Flatness Tolerances and measuring methods for particular requirements with regard to flatness shall be agreed between supplier and customer 5.2 Chemical composition Slugs complying with this standard shall be made from the materials listed in Table The chemical composition of these materials shall conform to EN 573-3 5.3 Mechanical properties Slugs complying with this standard shall be made in “O” (annealed) temper In the case of slugs with roughened surface, the approximate values of Brinell hardness given in Table are for guidance only If the customer requires specific values these shall be agreed between customer and supplier at the time of ordering 5.4 Other requirements 5.4.1 General Apart from the chemical composition and hardness (see Table 8), the type of surface treatment is a major factor in the workability of slugs and their suitability for impact extrusion 5.4.2 Surface finish Slugs may be supplied with one of the following surface finishes: a) bright; b) roughened: scoured or blasted or tumbled The required surface finish shall be stated at the time of ordering © BSI 08-1999 EN 570:1994 — Slight scores, indentations and edge deformations, and discolourations due to a heat treatment or surface treatment, such as scouring or blasting, are unavoidable and hence are permitted Particular requirements with regard to surface quality involving more effort and increased production time, shall be agreed between supplier and customer 5.4.3 Surface quality and edge quality Slight scores, spallings or discolourations result from the manufacturing process Scratches, scour marks, indentations and other damage due to mechanical action cannot always be avoided An assessment of whether such defects are acceptable shall be based on the following: — Large scores, spallings, cracks and damaged areas, incomplete slugs, flaking, formation of blisters and inclusions of foreign matter are not permitted Slight damage due to production process, such as edge deformations, are unavoidable and hence is permitted Table — Tolerances on thickness of sawn slugs Dimensions in millimetres Diameter or width over up to — Tolerances on thickness for thickness from up to 10 over 10 up to 20 over 20 up to 40 over 40 up to 70 over 70 up to 110 15 ± 0,15 ± 0,15 ± 0,15 ± 0,20 ± 0,25 15 30 ± 0,15 ± 0,20 ± 0,20 ± 0,25 ± 0,30 30 70 ± 0,15 ± 0,20 ± 0,25 ± 0,30 ± 0,35 70 100 ± 0,30 ± 0,35 ± 0,40 ± 0,45 ± 0,50 130 ± 0,40 ± 0,45 ± 0,50 ± 0,60 ± 0,70 100 NOTE The parallelism and squareness of the sawn surfaces shall be within the tolerance of the thickness Table — Material designation and Brinell hardness Material designation Numerical EN AW-1098 EN AW-1080A Chemical symbols Approximate Brinell hardness HB EN AW-A1 99,98 18 EN AW-A1 99,8(A) 19 EN AW-1070A a EN AW-A1 99,7 21 EN AW-1050A a EN AW-A1 99,5 23 EN AW-A 99,0 25 EN AW-2011 EN AW-A1 Cu6BiPb 50 EN AW-3102 EN AW-A1 Mn 0,2 23 EN AW-3103a EN AW-A1 Mn1 33 EN AW-3207 EN AW-A1 Mn 0,6 25 EN AW-5005A EN AWA1 Mg1(C) 37 EN AW-5305 EN AW-A1 99,85 Mg1 33 EN AW-5505 EN AW-A1 99,9 Mg1 33 EN AW-5110 EN AW-A1 99,85Mg 0,5 27 EN AW-5210 EN AW-A1 99,9 Mg 0,5 27 EN AW-5754 EN AW-A1 Mg3 58 EN AW-6060a EN AW-A1 MgSi 35 EN AW-6061 EN AW-A1 Mg1SiCu 40 EN AW-A1Si1MgMn 40 EN AW-1200 EN a a AW-6082a Sawn slugs with a hole can only be supplied in these materials © BSI 08-1999 EN 570:1994 5.4.4 Conditions of hole walls Sampling rate and test certificates The hole walls remain bright during scouring or tumbling If the wall is required to be grooved or otherwise roughened, this shall be the subject of a particular agreement between supplier and customer Testing The manufacturer shall carry out the tests as part of internal quality control Certificates according to EN 10204 are issued, if agreed between supplier and customer In mass production, as is the case with slugs, defective products are unavoidable If necessary the percentage of defective slugs shall be agreed between supplier and customer If certificates as specified in EN 10204 are to be issued, the type of certificate and the scope of test shall be agreed at the time of ordering Generally, the manufacturer confirms in these certificates the results of the tests with regard to chemical composition and hardness 6.1 Chemical composition Packaging and marking 5.4.5 Macrostructure A uniform grain size is required to a degree which does not negatively affect the production at the customer Quality limits and measuring methods for particular requirements with regard to the grain size shall be agreed between supplier and customer The method of analysis is at the manufacturer’s discretion In cases of doubt, the analysis shall be carried out by an independent laboratory using test methods agreed between manufacturer and customer 6.2 Brinell hardness Tests shall be carried out in accordance with ISO 6506 6.3 Surface quality The surface quality including that of the cut faces and the hole walls shall be assessed by visual examination without using any mechanical or optical aids, taking 5.4.1 to 5.4.3 into account The type of packaging, which depends on the susceptibility of the slug surface to damage and the intended application, is at the manufacturer’s discretion The marking of the packages and whether packaged units are to have a uniform mass is to be agreed between supplier and customer Arbitration In cases of dispute concerning conformity with the requirements of this European Standard or specification cited on the order, before rejecting the products, testing and examination shall be carried out by an arbitrator chosen by mutual agreement between supplier and customer The arbitrator’s decision shall be final © BSI 08-1999 BS EN 570:1995 List of references See national foreword © BSI 08-1999 BS EN 570:1995 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British 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