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The European Standard EN 604-2 : 1997 has the status of a
British Standard
ICS 77.150.10
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
Aluminium and
aluminium alloys Ð
Cast forging stock
Part 2 Tolerances on dimensions and
form
Trang 2BS EN 604-2 : 1997
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 May 1997
The following BSI references
relate to the work on this
standard:
Committee reference NFE/35
Draft for comment 91/49170 DC
ISBN 0 580 27426 8
Amendments issued since publication
Amd No Date Text affected
Committees responsible for this British Standard
The preparation of this British Standard was entrusted to Technical Committee NFE/35, Light metals and their alloys, upon which the following bodies were represented:
Aluminium Federation Aluminium Stockholders' Association Association of Light Alloy Refiners Limited Magnesium Industry Council
Ministry of Defence Society of Motor Manufacturers and Traders Ltd
The following bodies were also represented in the drafting of the standard, through subcommittees and panels:
Association of British Welded Aluminium Tube Makers Institution of Structural Engineers
Metal Packaging Manufacturers' Association
Trang 3 BSI 1997 i
Contents
Page
Trang 4ii BSI 1997
BS EN 604-2 : 1997
National foreword
This Part of BS EN 604 has been prepared by Technical Committee NFE/35 and is the
English language version of EN 604-2 : 1997 Aluminium and aluminium alloys Ð
Cast forging stock Ð Part 2 : Tolerances on dimensions and form published by the
European Committee for Standardization (CEN)
This British Standard has been prepared under the direction of the Engineering Sector Board and is the English language version of EN 604-2 : 1997, published by the
European Committee for Standardization (CEN)
Cross-references
Publication referred to Corresponding British Standard
EN 573-3 : 1995 BS EN 573 Aluminium and aluminium alloys Ð Chemical
composition and form of wrought products
Part 3 : 1995 Chemical composition
EN 604-1 : 1997 BS EN 604 Aluminium and aluminium alloys Ð Cast
forging stock
Part 1 : 1997 Technical conditions for inspection and
delivery
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 2 to 4, an inside back cover and a back cover
Trang 5European Committee for Standardization Comite EuropeÂen de Normalisation EuropaÈisches Komitee fuÈr Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
1997 Copyright reserved to CEN members
Ref No EN 604-2 : 1997 E
ICS 77.120.10; 77.140.90
Descriptors: Aluminium products, aluminium alloys, forgings, dimensional tolerances, form tolerances
English version
Aluminium and aluminium alloys Ð Cast forging stock Ð
Part 2: Tolerances on dimensions and form
Aluminium et alliages d'aluminium Ð Produits
couleÂs et destiyeÂs aÁ la forge Ð
Partie 2: ToleÂrances sur dimensions et forme
Aluminium und Aluminiumlegierungen Ð Gegossenes Schmiedevormaterial Ð Teil 2: Grenzabmảe und Formtoleranzen
This European Standard was approved by CEN on 1996-12-19 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
Trang 6Page 2
EN 604-2 : 1997
Foreword
This European Standard has been prepared by
Technical Committee CEN/TC 132, Aluminium and
aluminium alloys, the secretariat of which is held by
AFNOR
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 July 1997, and
conflicting national standards shall be withdrawn at
the latest by July 1997
This standard is part of a set of two standards The
other standard is:
EN 604-1 Aluminium and aluminium alloys Ð
Cast forging stock Ð
Part 1: Technical conditions for inspection
and delivery
According to the CEN/CENELEC Internal Regulations,
the national standards organizations of 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 and the United Kingdom
Contents
Page
3 Tolerances on dimensions and form 3
Trang 7 BSI 1997
1 Scope
This Part of this standard specifies the tolerances on
dimensions and form of cast aluminium and aluminium
alloy forging stock for general engineering applications
The chemical compositions for these alloys are
specified in EN 573-3 The technical conditions for
inspection and delivery of these products are specified
in EN 604-1
2 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 Ð
Chemical composition and form of wrought products Ð
Part 3: Chemical composition
EN 604-1 Aluminium and aluminium alloys Ð
Cast forging stock Ð Part 1: Technical conditions for inspection and delivery
3 Tolerances on dimensions and form
3.1 General
The tolerances stated below shall apply to round
ingots, as cast or scalped on diameter and sawn to
length and to rectangular ingots, scalped on faces and
sawn to length and width
3.2 Tolerances on dimensions
3.2.1 Round ingots (as cast or scalped)
3.2.1.1 Diameter
The measurements shall be taken at the two sawn
ends on two diameters 90Ê apart The limit deviations
on the nominal diameter shall be:
a) as cast:
±220mm for ingot diameters not greater than 200 mm;
±230mm for ingot diameters greater than 200 mm and not greater than 400 mm;
±240mm for ingot diameters greater than 400 mm;
b) scalped:
±220mm for all ingot diameters
3.2.1.2 Length
The measurement shall be taken overall The limit deviations on the nominal length shall be:
±±3 mm for ingot lengths not greater than 1200 mm;
±±15 mm for ingot lengths greater than 1200 mm
3.2.2 Rectangular ingots (scalped) 3.2.2.1 Width
The measurement shall be taken overall The limit deviations on the nominal width shall be:
±+100mm for all ingots widths
3.2.2.2 Thickness
The measurement shall be taken at the two sawn ends
on both sides of the ingot The limit deviations on the nominal thickness shall be:
±±5 mm for all ingot thicknesses
3.2.2.3 Length
The measurement shall be taken overall The limit deviations on nominal length shall be:
±±25 mm for all ingot lengths
3.3 Tolerances on form
3.3.1 Round ingots (as cast or scalped) 3.3.1.1 Perpendicularity
Sawn ends of ingots shall be perpendicular to the longitudinal axis to (90±1)Ê
3.3.1.2 Straightness (as cast ingot only)
The deflection measured on any generating line of the ingot shall be less than 3 mm per metre The total deviation over the full length of the ingot shall not exceed 15 mm
3.3.2 Rectangular ingots (scalped) 3.3.2.1 Perpendicularity
Sawn faces of ingots shall be perpendicular to the longitudinal or transverse axis, as applicable,
to (90±1)Ê
3.3.2.2 Flatness
The deflection measured in any direction on any face
of the ingot shall be less than 2 mm per metre
Trang 84 blank
Trang 9 BSI 1997
List of references
See national foreword
Trang 10389 Chiswick High Road
London
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