Bsi bs 2b 29 2001 (2002)

BRITISH STANDARD AEROSPACE SERIES BS 2B 29 2001 Incorporating Corrigendum No 1 Copper beryllium alloy strip, foil and parts (solution treated, cold rolled quarter hard and precipitation treated) ICS 4[.]

Copper- beryllium alloy

ICS 4 0 5.1 ; 4 0 5

This Br itsh Stan ard,ha in g

b en pre ared u d er the

directon of the Engine ring

Sector Policy an Strate y

Commi e , was published

u der the authoriy of the

Stan ard s Policy n Strateg y

Commi e

on1 Decemb r2 0

© BSI 1 Octo er 2 0

Firt Published Ju e 1 9

Secon edi on Decemb r 2 0

The folowing BSI r eferences

relate to the work on this

Bri shStan ard

Commi e reference AC /1

Draft for comment 0 / 70 5 2 DC

ISBN 0 5 0 3 3 3 X

The prep ration of this British Stand rd was entrusted to Tech ical

Commit e A CE/ 16, Wroug ht an d cast cop er al oy s and mis elane us

metal icmaterials for aerosp ce, upon which the folowingbod ies wer e

represented:

British N on-Ferr ous Metals Feder ation

Cop er Dev elopment Association

Ministry of Defence

Society of British A erosp ce Comp nies L td

Am endm ents is ued sinc publ cation

13 02

Corr ig en um No.1

1 Octobe 20 2 Change to “ Use condition” in Ta le 1,

ln e13

Pa e

Ta le 1 — Techn ical req uirements for Cu-Be aloy strip, foi and p rts

( solutiontreated, cold roled: q uarter hard and precipitation treated) 2

© BSI 1 Octo er 2 0

Foreword

This Br itish Stand ard has be n prep red b Tech ical Commit e ACE/ 16

Itsuper sedes BSB29:19 1, which is withdrawn

This new edition incorpor ates tech ical chang es only It do s not represen t a ful

review or r ev ision of the stand ar d , wh ich wi be u der taken in due cour e

The folowing changes hav e be n included in this edition of the stand rd A new

subclause3.4 has be n a ded, specifying the req uirements for p rts; in Ta le 1,

l ne6.1, the q uenching detais ha e be n modified, in Ta le 1,lne 15, an omit ed

elong ation v alue has be n a ded u der “ Use condition”, and in Ta le 1, l ne19,

“ k” has be n specified

W A RNING This British Stand ard cal s for the use of substances and/or

procedures that ma be injurious to h ealth if a equate precautions are not taken

It refer on ly to tech ical suita i ity and do s not a solve the user f om leg al

obl g tions relating to health and safety at any sta e

This publ cation do s not purport to include al the neces ary prov isions of a

contract User are responsible for its cor ect a pl cation

Complanc with a British Standard does not of itself confer imm unity

f om leg al o lg ations

Summary of pag es

This document comprises a f ont cov er, an inside f ont cover , p gesi toi ,

p ges1 to3 and a b ck cov er

The BSI copy rig ht notice display ed in this document ind icates when the

document was last is ued

1 Scope

This British Stand rd specifies the inspection and testing procedures, chemical composition, heat

treatment an d mechanical properties fo a precipitation har dening cop er-ber yl um aloy sup l ed in the

form of strip and foi The material is sup l ed in the solution treated and cold roled cond ition for

precipitation treatment after conv er ion into p rts

2 Norm ative r f r nces

The folowing normative documents contain prov isions wh ich, throug h reference in this text, constitute

prov isions of this British Stand rd F or d ted references, any subsequent amendments to, or revisions of,

an y of these publcations do not a ply F or u d ted references,the latest ed ition of the publcation refer ed

to a ples

BS5 5 , Spe ification fr SI u is a nd r ecommend a tions fr the us o their muliple a nd o c r ta in other

u is

BS5 7 -0, Spe ifica tion f r qua ntte , u i s a nd symbols — Par t0: G ener a l pr inciple

BSB10 , Pr oc d ur e fr inspe ton, te tng a nd a cc pta nc o wr ought cop er a ll oys

BSEN16 4, Cop er a nd cop er a llo s — Str ip f r spr ings a nd con e tor s

3 Technica l requir m ents

3.1 Mater ial to this stand ard shal conform to the tech ical r equirements specified in Ta le 1 Al material

sup l ed shal conform to the r eq uirements a propriate to its dimen sions and condition as specified in the

stand r ds g iv en in lnes 5 and9 of Ta le 1

3.2 Sy mbols and u its used in Ta le 1 shal be interpreted in ac ord ance with BS5 5 and BS5 7 -0

N T The format of Ta le 1 an the symb ls used in this ta le ar e der iv ed fom prEN4 0 -1:1 9

3.3 F or th e purposes of this stand rd, a b tch is defined as material of the same nominal c os -sectional

dimensions, fom the same cast, man factured b the same route and heat treated tog ether

3.4 Parts shal be sup led in the solution treated, cold rol ed and precipitation treated condition

© BSI 1 Octo er 2 0

Ta le 1 — Te hnical requirements for Cu- Be aloy strip, foi and parts (solution

treated,coldrol ed: quarter hard a ndpre ipita tiontreated)

+Fe

4.3 Lim it dim ensions mm 0.1 u a u 3.0

6.1 Delve y condition Soluton tre ted an cold roled ( !H)

Heat tr atm ent 7 0°C u Ú u 8 5°C/Quench + cold roled ( 1)

7 Use condition Soluton tre ted, cold roled an precipiaton tre ted

+ 3 5

°C u Ú u 3 0°C/t = 2h/AC

C aracte is ics

1 T ick es of cla ding on ea ch fac % —

1

Tensie

Tem pe a tur Ú °C Ambient temp rature

p.2

m MPa 5 0 u R

m

m

u 1 1

c

1 Bending k — 0 (a = 9 ° (22 0 (a = 9 ° (22 —

2

Cr ep

a

ruptur

9 Notes ( 1) Quenching shal b efected b for ced air , spr ay d water or

immer ion in oil or water

( 2) “k” is calculated fom:

where r = b n ing radius an a = thick nes

A “k” v lue of 0 in icates a b n ing radius les than or e ual

to 0.1mm

k r

a

-=

Bibl og ra phy

Standards publ cations

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