Bsi bs 2b 30 2001 (2002)

BRITISH STANDARD AEROSPACE SERIES

BS 2B 30:2001
Inco rp orating
Co rrigendum No .

Copper-beryllium alloy
strip, foil and parts
(solution treated, cold
rolled: half hard and
precipitation treated)

IC S 49 . 0 2 5 . 1 5 ; 49 . 03 5

óóÀÀơ ơ óÀóÀơ ơ Àơ ơ ụ ụ ụ úúú

íĐđÃạáơ ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

ềơ đ ẻằ-ằ

1


BS 2B 30:2001

Committees responsible for this
British Standard
The p re parat ion of this British Standard w as e ntrust ed t o Te chnic al
C o m mitte e AC E /1 6 , Wro ught and c ast c opp e r allo ys and misce llane ous

metallic mate rials for ae ro space , upo n w hich the fo llo w ing bo dies w ere
repres ente d:

Britis h No n- Ferro us M etals Fede ration

C o p per D e ve lo p me nt Asso ciat io n

Minis try of D e fence

óóÀÀơ ơ óÀóÀô ô Àô ô Àô Àô ô Àóóó

So c ie ty of B rit is h Aero space C om p anies Lt d.

This B rit is h St anda rd, ha ving
be e n pr ep are d unde r th e
direct ion o f the E nginee ring
S ecto r Policy a nd S tra te gy
C om m itte e, wa s p ub lis he d
un de r the a utho rity o f the
S tan dards Polic y and S trate gy
Co m m itte e
o n 1 9 D e ce m b e r 2 001

©

BS I 1 O cto b e r 2 00 2

Amendments issued since publication

First Pub lis hed J une 1 99 1

S eco nd e ditio n D e ce mb er 2 001

The fo llo wing BS I re fere nces

Amd. No .

D ate

C o m me nt

1 39 0 3

1 O ct ob e r 2 00 2

C hange to

Co rrigendu m No . 1

line 1 3

re la te to the wo rk o n th is
B ritish S tan da rd
Co m m itte e re fe ren ce ACE /1 6
D r aft fo r c o mm e nt 00 /70 55 1 3 D C

ISBN 0 580 33324 8

íĐđÃạáơ ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

ềơ đ ẻằ-ằ



Use co nditio n



in Tab le 1 ,


BS 2B 30:2001

Contents
Page
Committees resp onsible

Inside front cover

Foreword

ii

1

Scope

1

2

Normative references

1

3

Technical requirements

1

Table 1

— Technical requirements for Cu- Be alloy s trip, foil and parts

(solution treated, cold rolled: half hard and precipitation treated)

2

Bibliography

3

óóÀÀơ ơ úúụ ụ ụ ụ ụ ụ ụ úúú

â

íĐđÃạáơ ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
BSI 1 October 2 00 2

éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

i
ềơ đ ẻằ-ằ


BS 2B 30:2001

Fore wo rd

This Brit ish St andard has be en p re p are d b y Tec hnical C o mmitte e AC E /1 6.
It s upe rse de s BS B 3 0: 1 9 9 1 , w hich is w ithdrawn.

This ne w edit io n inco rp orate s te chnical change s o nly. It doe s not re p res e nt a full
re vie w o r re vis ion o f the s tandard, w hich w ill b e unde rtak en in due co urs e.

The fo llo w ing change s have b ee n included in this edit ion o f t he standard. A ne w
s ubc lause 3 . 4 has be e n added, sp ecifying the requirem e nts for parts ; in Table 1 ,
line 6 . 1 , the que nching det ails have be en mo difie d and in T ab le 1 , line 1 9,

“k ”

has

b ee n s pe cified.

WARNING . T his British S tandard calls for the use of sub s tance s and/o r
p roc e dure s that may b e inj urious to he alth if adequate pre cautio ns are no t take n.
I t re fers o nly to te c hnical suit ab ility and do e s not ab so lve the use r from le gal

ob ligatio ns re lating to healt h and s afe ty at any stage .

This p ublic ation do es not p urp ort to inc lude all the nec es sary provisions of a
co ntrac t. Us ers are re spo nsib le fo r its c orrec t app licatio n.

C o mp liance w i th a B ri tish S tandar d does not of its elf confer i mmu nity
fro m legal o b ligati on s.

óóÀÀơ ơ óÀóÀơ ơ Àơ ơ Àơ Àơ ơ Àóóó

S ummar y of p ages
This doc ume nt co mp rises a fro nt co ver, an ins ide fro nt co ver, pages i to ii,
p age s 1 t o 3 and a back c ove r.

The BS I c opyright no tice dis played in this docume nt indicate s whe n the
document w as last iss ue d.

ii ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
íĐđÃạáơ
éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

â
ềơ đ ẻằ-ằ

BS I 1 O c to b e r 2 0 02


BS 2 B 30:2 001
óóÀÀơ ơ óÀóÀơ ơ Àơ ơ Àơ Àơ ơ Àóóó

1 S co pe
This Brit is h S tandard s pec ifies the ins pe c tio n and te sting pro ce dures, c hem ic al c o mp o sitio n, heat
treat me nt and mec hanical p ro p ert ie s fo r a prec ipitatio n hardening co p per- be ryllium allo y sup plied in the
fo rm of strip and fo il. The m aterial is sup plied in the so lution treate d and co ld rolle d co ndit ion fo r
p re cip itatio n tre atment afte r co nve rsion int o p arts .

2 Normati ve re fe re nce s
The fo llow ing norma tive doc uments c ontain p ro visions which, thro ugh re fere nc e in this t ext, c onstitute
p ro visio ns o f this British Standard. Fo r date d referenc es , any s ub seque nt am en dm ent s to , o r re vis ions of,
any o f the se p ublic ations do no t ap ply. Fo r undate d re fere nces , the late st e ditio n of the pub licatio n referre d
to applies .

BS 55 55 , Sp eci ficatio n for SI units and reco mm e ndatio ns for the us e of their m ultip les and o f ce rtain other
units.

BS 57 75 - 0 , Spe cificati on for quantitie s, units and sy mb o ls

—

Part 0: Gene ral p rinci ple s.

BS B 1 0 0 , Pro ce dure fo r ins pect io n, tes ti ng and acce ptance o f w ro ught c op per allo ys .

BS E N 1 65 4 , Co pp er and c o ppe r all oys

—

Strip fo r s prings and co nne cto rs .

3 Te ch nical re quire me nts

3 .1 Mate rial to this standard shall co nform t o the t e chnical requirem ents s pe c ifie d in Tab le 1 . All mate rial
supp lied shall c onfo rm to t he re quirem e nts app ro priate to its dime ns io ns and conditio n as s p e cified in the
standards given in line s 5 and 96 o f Tab le 1 .

3 .2 S ymb o ls and unit s us ed in Tab le 1 s hall b e inte rp ret ed in ac co rdance wit h BS 55 5 5 and BS 5 7 75 - 0 .
NO TE

The fo rma t o f Ta b le 1 a nd the s ym b o ls u se d in this ta b le are de rive d fro m p rE N 45 00- 1 : 1 9 96.

3 .3 Fo r the p urp ose s o f this s tandard, a b atc h is de fine d as mat erial of the s am e nominal c ro ss - s e ctional
dim ensions, from the s am e c ast, manufact ured by t he sam e ro ute and he at t rea ted toge the r.

3 .4 Parts shall b e sup plied in the so lut ion tre ate d, co ld rolle d and p re cip itation treate d c onditio n.

â

íĐđÃạáơ ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
BS I 1 O cto b e r 2 00 2
éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

1

ềơ đ ẻằ-ằ


BS 2B 30:2001

Table 1

—

Technical requirements for C u-Be alloy strip, foil and parts (solution treated,
cold rolled: half hard and precipitation treated)

1

Material designatio n

2

C hemical
composition

%
3

Methods of melting

4.1

Form

4.2

Method of production

4.3

Limit dimensions

5

Technical specificatio n

6.1

Element
min.
max.

—

mm

D elivery condition

D elivery condition code

7

Use condition

Test sample(s)
Test piece(s)

8.3

H eat treatment

9

D imensions concerned

10

Thickness of cladding on e ach face

11

D irection of test piece

12

Temp erature

13
14

Proof stress
Tensile

Strength

15

Elongation

16

Reduction of area

18
19
20

óóÀÀơ ơ óÀóÀơ ơ Àơ ơ Àơ Àơ ơ Àóóó

17

H ardness
S hear stre ngth
Bending

21

Time
Stress

24

Rc
k

Temp erature

23
Creep

Elo ngation

25

Rupture stre ss

26

Elo ngation at
rupture

96

D imensional standard

98

Notes

mm
%

C
Rp0.2 MPa
MPa
Rm
A
%
Z

%

I mpact strength

22

Others Cu

0.20

0.20

0.50

Base

—

Characteristics

8.2

Si

Solution treated, cold rolled and precipitation treated
Delivery condition
330 C/t = 2h/AC
+ 315 C

He at treatment

8.1

Al

Strip, foil and parts
Rolling
0.10 a 3.0
BS B 100
Solution treated and cold rolled ( H)
760 C
835 C/Quench + cold rolled (1)

He at treatment
6.2

CuBe1.9
Be
Co + Ni Ni + Co
+ Fe
1.80
0.20
2.00
0.6

a

a
R

A

See BS B 100
See BS B 100
Delivery condition

Use condition

—
—

L
T
Ambient temperature

—

—

590 Rm 690
5
—

180 HV 225
MPa —
—
0.5 (a = 90 (2

L
1130

1270 Rm 1480
1
370 HV 430

1.0 (a = 90 2

—
C
—
h
—
MPa —
%
—
MPa —
%
—

—

BS EN 1654, class A
(1)
Quenching shall be effected by forced air, sprayed water or
immersion in oil or water.
(2)
“ k” is calculated from:
k = ar where r = bending radius and a = thickness.
---

2

íĐđÃạáơ ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

â BSI 1 October 2002
ềơ đ ẻằ-ằ


BS 2B 30:2001

Bibliography
Standards publications
Rules for drafting and presentation of material standards

— Part 1: General rules

.

óó À À ơ ơ ó À ó À ơ ơ À ơ ơ À ơ À ơ ơ À ó ó ó

p rE N 45 00 - 1 : 1 9 9 6,

â

íĐđÃạáơ ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
BS I 1 O cto b e r 2 00 2
éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

3

ềơ đ ẻằ-ằ


BS 2B 30:2001

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 Standard would inform the Secretary of the technical committee
responsible, the identity of which can be found on the inside front cover.
Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.
BSI offers members an individual updating service called PLUS which ensures
that subscribers automatically receive the latest editions of standards.
Buying standards

Orders for all BSI, international and foreign standards publications should be
addressed to Customer Services. Tel: +44 (0)20 8996 9001.

Fax: +44 (0)20 8996 7001. Email: Standards are also
available from the BSI website at .
In response to orders for international standards, it is BSI policy to supply the
BSI implementation of those that have been published as British Standards,
unless otherwise requested.
Information on standards

BSI provides a wide range of information on national, European and
international standards through its Library and its Technical Help to Exporters
Service. Various BSI electronic information services are also available which give
details on all its products and services. Contact the Information Centre.
Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email:
Subscribing members of BSI are kept up to date with standards developments
and receive substantial discounts on the purchase price of standards. For details
of these and other benefits contact Membership Administration.
Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001.
Email:
Information regarding online access to British Standards via British Standards
Online can be found at />Further information about BSI is available on the BSI website at
.
Copyright

BSI
389 Chiswick High Road
London
W4 4AL

Copyright subsists in all BSI publications. BSI also holds the copyright, in the
UK, of the publications of the international standardization bodies. Except as
permitted under the Copyright, Designs and Patents Act 1988 no extract may be

reproduced, stored in a retrieval system or transmitted in any form or by any
means – electronic, photocopying, recording or otherwise – without prior written
permission from BSI.
This does not preclude the free use, in the course of implementing the standard,
of necessary details such as symbols, and size, type or grade designations. If these
details are to be used for any other purpose than implementation then the prior
written permission of BSI must be obtained.
Details and advice can be obtained from the Copyright & Licensing Manager.
Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553.
Email:

óóÀÀơ ơ óÀóÀơ ơ Àơ ơ Àơ ụ ụ úúú

íĐđÃạáơ ịđÃơÃ-á ơẳđẳ- ì-ơÃơôơÃ
éđêÃẳằẳ ắĐ ìỉ ôẳằđ Ãẵằ-ằ âÃơá ịì
ề đằđẳôẵơà đ ằơâđàÃạ ằđÃơơằẳ âÃơáôơ Ãẵằ-ằ đ ì ỉ

ềơ đ ẻằ-ằ