Bsi bs en 04258 1998

BRITISH STANDARD AEROSPACE SERIES BS EN 4258 1998 Metallic materials — General organization of standardization — Links between types of EN standards and their use The European Standard EN 4258 1998 ha[.]

The European Stand rd EN 425 :19 8 has the status of a

British Stand rd

ICS 4 0 5.0

This British Stan ard,ha ing

b en pre ared u der the

direction of the Eng inering

Sector Bo rd, was publshed

u der the authority of the

Stan ards Bo rd an comes

into efect on

1 Octo er 1 9

© BSI 0 -1 9

ISBN 0 5 0 3 5 4 6

This British Stand rd is the Eng lish lang uag e v er ion of EN425 :19 8

The UK p rticip tion in its prep ration was entrusted to Tech ical Commit e

ACE/61, Inspection and testing requirements for aerosp ce metal ic materials,

which has the responsibi ity to:

— aid enquirer to u der tand the text;

— present to the responsible international/ European commit e any

enquiries on the interpretation, or proposals for chang e, and ke p the UK

interests informed;

— monitor related international and European dev elopments and

promulg ate them in the UK

A l st of org anizations represented on this commit e can be obtained on

request to its sec etary

Cros - referenc s

The British Stand rds which implement international or European

publ cations refer ed to in this document ma be fou d in the BSI Stand rds

Catalog ue u der the section entitled “ nternational Stand rds Cor espondence

Index”, or b using the “ Find” faci ty of the BSI Stand rds Electronic

Catalog ue

A British Stand rd do s not purport to include al the neces ary prov isions of

a contract User of British Stand rds are responsible for their cor ect

a plcation

Compl anc with a British Standard do s not of itself c nfer im m unity

f om leg al obl g ations

Sum mary of pag es

This document comprises a font cov er, an inside f ont cov er, p g es i and i,

theENtitlep g e, p g es2 to8 and a b ck cov er

This stand rd has be n up ated ( se copy rig ht d te) and ma hav e ha

amendments incorporated This wi be indicated in the amendment ta le on

the inside font cov er

Am endm ents is ued sinc publ cation

Pag e

NORME EUROPÉENNE

ICS4 0 5.0

Des riptor : Air raft in ustry , metals,semifinished prod cts, definitions, stan ards, des ription,org nization, reference to stan ards,

le el,quantity , uti zation

Eng lish ver ion

Série aérospatiale — Matériaux métaliques —

Org anisation g énérale de la normal sation —

Liens entre les ty es de normes EN et leur

utiisation

Luft- und Raumfahrt — Metal is he

W erkstofe — A llg emeine Glederung der

Normung — Verknüpfung der Arten von

EN-Normen und ihre Anwendung

This European Stand rd was a prov ed b CEN on23February19 8

CEN member are bou d to comply with the CEN/CENELEC Internal

Reg ulations which stipulate the conditions for g iv ing this European Stand rd

the status of a national stand rd without any alteration Up-to-d te lsts and

bibl og ra hical references concerning such national stand rds ma be obtained

on a pl cation to the Central Sec etariat or to any CEN member

This European Stand rd exists in thre oficial v er ions ( Eng lish, French,

German) A v er ion in any other lang uag e ma e b translation u der the

responsibi ity of a CEN member into its own lang uag e and notified to the

Central Sec etariat has the same status as the oficial v er ions

CEN member are the national stand rds bodies of Austria, Belg ium,

Cz chRepublc, Denmark, Finland, France, Germany , Gre ce, I eland,

I eland, Italy , Luxembourg , Netherlands, Norway , Portug al, Sp in, Sweden,

Switz rland and United King dom

European Commit e for Stand rdization

Comité Europé n de Normalsation

Europ is hes Komite für Normu g

Central Se retariat: rue de Stas art 3 , B- 10 0 Brus els

© 19 8 CEN All rig hts of ex loitation in any form and b any means reserv ed worldwide for CEN national

Member

Ref No EN 425 :19 8 E

For word

This European Stand rd has be n prep red b the

European Association of Aerosp ce Man facturer

( AECMA)

After inquiries and v otes car ied out in ac ord nce

with the rules of this Association, this Stand rd has

receiv ed the a prov al of the National Associations

and the Oficial Serv ices of the member countries of

AECMA, prior to its presentation to CEN

This European Stand rd shal be g iv en the status of

a national stand rd, either b publ cation of an

identical text or b endor ement, at the latest b

Nov ember19 8,and conflcting national stand rds

shal be withdrawn at the latest b Nov ember19 8

According to the CEN/CENELEC Internal

Reg ulations, the national stand rds org anizations

of the folowing cou tries are bou d to implement

this European Stand rd: Austria, Belg ium,

Cz chRepublc, Denmark, Finland, France,

Germany , Gre ce, I eland, I eland, Italy ,

Luxembourg , Netherlands, Norway , Portug al,

Sp in, Sweden, Switz rland and the United

King dom

Contents

Pag e

4 Des ription of the ty pes of EN stand rds 4

5 Lin s betwe n ty pes of EN stand rds

Annex A ( normativ e) New org anization 6

Annex B ( normativ e) Use of the material

Annex C ( normativ e) Intermediate procedure 8

0 Introduction

For the purpose of stand rdization of metal c

materials, AECMA ha orig inal y b sed the

org anization of this stand rdization on a sy stem

which prov ided strong interln s betwe n a

material stand rd refer ing to EN25 0 and its

sup orting stand rds

Since these ln s did not alow the p rtial use of the

sup orting stand rds, the folowing amendments

hav e be n introduced to ensure that:

— strong ly interl n ed stand rds are l mited to

those strictly neces ary to ensure coherency ;

— other stand rds ma be either used, or

replaced b stand rds of another orig in, at the

pur haser’s dis retion

The b sic chang e in these ln s is that the

dimensional stand rds and desig nation stand rd

for semi finished products, where a plca le, hav e

be n dis ociated fom the material stand rd

Additionaly , product qualfication procedures are

being introduced

Pending the up ating of the stand rds, these two

org anizations exist in p ralel:

— the orig inal one des ribed b EN25 0;

— the new one des ribed in this stand rd

( se Annex A and Annex B)

To ena le prog res iv e up ating of the stand rds,an

intermediate procedure is to be folowed, as

des ribed inAnnex C, pending ful introduction of

the new org anization

This stand rd specifies the g eneral org anization of

metal ic material stand rds, their ln s with other

ty pes of EN stand rds and their use, for aerosp ce

a plcations

It cor esponds to lev el 0 ( se 4.1)

2 Norm ative r f r nces

This European Stand rd incorporates b d ted or

u d ted reference prov isions f om other

publcations These normativ e references are cited

at the a propriate places in the text and the

publcations are l sted hereafter For d ted

references, subsequent amendments to or rev isions

of any of these publcations a ply to this European

Stand rd only when incorporated in it b

amendment or rev ision For u d ted references the

latest edition of the publcation refer ed to a ples

EN 20 2-1, A er ospa ce s r ie — Meta llic ma ter ia l s —

Pa r t1: D esigna tion

1)

EN 20 2-2,A er ospa ce s r ie — Meta llic ma ter ia l s —

Pa r t2: Cod ing o meta l lur gica l cond iton in d eliver y

cond iton

EN 20 3, A er ospa ce s r ie — Meta llic ma ter ia ls —

Gener a l r equir ements fr s mi-finished pr od uct

qua l ifica tion (exclud ing fr gings a nd ca stngs)

1)

EN 20 8, A er ospa ce s r ie — Meta llic ma ter ia ls —

Ma nufa ctur ing s hed ul e — Inspe ton s hed ule —

Inspe ton a nd te t r epor t — D es r ipt on a nd r ules

fr us

EN 25 0, A er ospa ce s r ie — Instr uct ons f r the

d r a ftng a nd us o meta llic ma ter ia l sta nd a r d s

2)

EN 26 0, A er ospa ce s r ie — D esigna tion o meta llic

s mi-finished pr od ucts — R ules

)

EN 4 0 , A er ospa ce s r ie — Meta llic ma ter ia ls —

R ul es f r d r a ft ng a nd pr es nta tion o d imensiona l

sta nd a r d s fr s mi-finished pr od ucts

)

EN 417 , A er ospa ce s r ie — Meta ll ic ma ter ia l s —

Qua l ifica tion a nd a ppr ova l o per son el fr non

d estr uctve te t ng

1)

EN 425 , A er ospa ce s r ie — Meta ll ic ma ter ia ls —

Definiions o gener a l ter ms

)

EN 426 , A er ospa ce s r ie — Meta llic ma ter ia ls —

R ules fr d r a ftng a nd pr es nta tion o te h ica l

spe ifica tions

)

EN 4261, A er ospa ce s r ie — Meta llic ma ter ia ls —

R ules fr d r a ftng a nd pr es nta tion o te t method

sta nd a r d s

1)

EN 426 , A er ospa ce s r ie — Meta l lic ma ter ia l s —

Hea t tr ea tment fa cilite

3)

EN 4 0 , A er ospa ce s r ie — Meta llic ma ter ia ls —

R ules fr d r a ftng a nd pr es nta tion o ma ter ia l

sta nd a r d s

4)

1)

Publshed as AECMA Prestan ard at the date of publcation of this stan ard

2)

Series of p rts, publshed as AECMA Prestan ards at the date of publcation of this stan ard

3)

In pre aration at the date of publcation of this stan ard

4)

Series of p rts, publshed as AECMA Prestan ards at the of publcation of this stan ard

TR 2410, A er ospa ce s r ie — R el a tionship betwe n

d imensiona l sta nd a r d s a nd meta llic ma ter ia l

sta nd a r d s

5)

3 Definitions

For the purposes of this stand rd, the fol owing

definitions a ply :

3.1

family of m etal ic m aterials

g roup of metal c materials characteriz d b a b se

element or a g roup of b se elements in sev eral

diferent semi finished product forms:

— aluminium and aluminium al oy s;

— mag nesium al oy s;

— heat resisting al oy s ( nickel or cob lt or iron

b se);

— titanium and titanium al oy s;

— ste l;

— fi er metals for brazing ;

— etc

3.2

semi-finished products

g eneric term used to indicate that the material as

sup l ed do s not neces ariy hav e any relation to

the ex ct form, dimensions or condition in which

that material is used as a final component

this term ma refer to one of the fol owing ty pes:

— wroug ht products ( e.g b r, she t, sections) or

cast products ( e.g rod, amorphous brazing foi

characteriz d b their form within a rang e of

stand rdiz d dimensions;

— products of non-stand rdiz d form and

dimensions produced b the same metalurg ical

tech ique ( e.g forg ing stock, remelting stock);

— blanks man factured f om the products stated

a ov e, of non-stand rdiz d form and dimension

( e.g forg ing s, casting s)

4 Description of the types ofEN

standards

There are fiv e lev els of EN stand rds, n mbered

f om0 to4 ( se Annex A) For the intermediate

procedure, se Annex C

4.1 General standard ( evel0)

4.2 Basic standards ( evel1)

They define the wording and/ or specify conv entional

rules that prov ide the b sis of u der tanding

betwe n the writer and the user of stand rds

specify ing rules ( se 4.3) and semi finished product

definition documents ( se 4.4)

They are the folowing :

4.3 Standards spe ifying rules ( evel2)

They specify the specific rules for the drafting and

presentation of the semi finished product definition

documents ( se 4.4)

They are the folowing :

and during the intermediate procedure:

4.4 Semi-finished product definition

do um ents ( evel3)

4.4.1 Mat erial st and ards

They specify a series of tech ical requirements

relating to a metal ic material semifinished

product, in one or sev eral del v ery conditions and

only one use condition

4.4.2 Te hnical spe ificat ions

They specify , for the semi finished products of a

metal ic material fami y , g eneral and specific

tech ical requirements related to:

— man facturing ;

— qual ty as urance

( qualfication, ac eptance, etc.);

— the prep ration and procedures for inspection

( including test fequency );

— the order and shipment

5)

Publshed as AECMA Tech ical Re ort at the date of publcation of this stan ard

— Ex lanatory stand rd for the

org anization of the whole col ection EN 425

— definitions of the g eneral terms EN 425

— definitions of man facturing

s hedule, inspection s hedule and

inspection and test report EN 20 8

— material desig nation EN 20 2-1

— coding of metalurg ical condition

inthe delv ery condition EN 20 2-2

— material stand rds EN 4 0 series

— tech ical specifications EN 426

— test method stand rds EN 4261

— dimensional stand rds EN 4 0

— g eneral requirements for

4.4.3 Te t met hod st andards

They specify instructions concerning :

— principle;

— reag ents and/ or as ociated materials;

— a p ratus;

— prep ration and retention of test samples

and/or test pieces;

— procedure( s)

for determination of a characteristic

4.4.4 D imensional st andard s

They specify , for each form of semi finished product

in a famiy of metal c materials:

— g eometry ;

— dimensions;

— as ociated tolerances

4.4.5 D esignat ion st and ards f r s mi- finished

pr d uct s

They specify the rules for desig nation of metal ic

semi finished products, e.g : EN26 0

4.4.6 Te hnical Repo t s

They g roup information in a practical way , e.g

4.5 Supplem entary standards for qual ty

as uranc ( evel4)

They specify sup lementary qual ty as urance

requirements concerning e.g :

— per on el;

— faci ties;

— proces es

For ex mple the fol owing :

5Links between types ofEN standards

and use

5.1 Level 1, 2 and 4 standards

5.1.1 Basic stand rds ( lev el1) shal be

sy stematicaly used in defining the semifinished

product definition documents ( lev el3), se 5.2

5.1.2 Rules ( lev el2) for the drafting and

presentation of semifinished product definition

documents ( lev el3), shal be sy stematical y a pled

5.1.3 S p lementary stand rds for qualty

as urance ( lev el4) are only refer ed to in the

relev ant stand rds where their a pl cation is

considered neces ary

N T The sup lementary stan ards for qualty as urance

ma also b e ternal to the colection ( e.g ISO,ASTM) after

a re ment b twe n the man facturer an the pur haser

5.2 Level 3 standards

5.2.1 The material stand rd is the lea document

that prov ides the b sis of under tanding betwe n

the man facturer and the pur haser

As such, the requirements of the material stand rd

shal ov er ide any other diferent requirements of

any other referenced lev el3 stand rd ( se Annex B)

5.2.2 The material stand rd shal refer to the

relev ant tech ical specification

N T This ln is man atory for coherency of the colection

5.2.3 The material stand rd and the relev ant

tech ical specification shal refer to test method

stand rds, where required

N T 1 The test method stan ards fom the original

org nization remain v ald for the new org nization

N T 2 Test method stan ards e ternal to the colection ma

also b used ( e.g ISO,ASTM)

5.2.4 Dimensional stand rds shal not be refer ed to

in the material stand rds

Dimensions shal be independently specified b the

pur haser on the order, in ac ord nce with the

requirements of the technical specification or

normativ e documents fom another orig in

5.2.5 Desig nation stand rds shal not be refer ed to

in the material stand rds or in the dimensional

stand rds

Desig nation rules, when required, shal be

independently specified b the pur haser on the

order, in ac ord nce with the requirements of the

tech ical specification or normativ e documents fom

another orig in

5.3 Te hnical Reports

Tech ical Reports defining relationships betwe n

stand rds or d ta fom diferent stand rds are

esta lshed to faci tate the use at any lev el of the

stand rds in the col ection They shal not be

refer ed to in material stand rds or dimensional

stand rds

6 Overview

Se Annex A

— relationship betwe n dimensional

stand rds and material stand rds TR 2410

— Qualfication and a prov al of

per on el for non-destructiv e testing EN 417

— Heat treatment faci ities EN 426

Annex A (norm ative)

New org anization

Ta le A.1 — Overview

Ty e of

d cum ent

General

stand rd

( se 4.1)

0 EN 425 Aerosp ce series — Metal c materials — General org anization of

stand rdization — Lin s betwe n ty pes of EN stand rds and their

use

Basic

stand rds

( se 4.2)

1 EN 20 2-1 Aerosp ce series — Metal c materials — Part1: Desig nation

EN 20 2-2 Aerosp ce series — Metal c materials — Part2: Coding of

metalurg ical condition in delv ery condition

EN 20 8 Aerosp ce series — Metal c materials — Man facturing s hedule —

Inspection s hedule — Inspection and test report — Des ription and

rules for use

EN 425 Aerosp ce series — Metal c materials — Definitions of g eneral terms

Rules

( se 4.3)

2 EN 4 0 Aerosp ce series — Metal c materials — Rules for drafting and

presentation of dimensional stand rds for semifinished products

EN 426 Aerosp ce series — Metal c materials — Rules for drafting and

presentation of tech ical specifications

EN 4261 Aerosp ce series — Metal c materials — Rules for drafting and

presentation of test method stand rds

EN 4 0 Aerosp ce series — Metal c materials — Rules for drafting and

presentation of material stand rds

Semifinished

products

definition

documents

( se 4.4)

3 a) Inter on ected ( se 5.2.1, 5.2.2 and 5.2.3)

— Material stand rds

— Tech ical specifications

— Test method stand rds

b) Optional use ( se 5.2.4 and5.2.5)

— Dimensional stand rds

— Desig nation stand rds

c) For information ( se 5.3)

Relationship betwe n EN dimensional stand rds and EN metal ic material

stand rd: TR2410

Sup lementary

stand rds for

qual ty

as urance

( se 4.5)

4 EN 417 Aerosp ce series — Metal ic materials — Qualfication and a prov al

of per onnel for non destructiv e testing

EN 426 Aerosp ce series — Metal c materials — Heat treatment faci ties