Bsi bs b 23 1991 (1999)

BRITISH STANDARD BS B 23 1991 Specification for Copper aluminium nickel iron alloy rods, sections, forging stock and forgings L ic e n s e d C o p y L o n d o n S o u th B a n k U n iv e rs it y , L o[.]

Specification for

This British Stan ard, ha ing

b en pre ared u der the

direction of the Aerosp ce

Stan ards Policy Commite ,

was published u der the

authority of the Stan ards

Bo rd an comes

into efect on

3 Octo er1 9

© BSI0 -1 9

The folowing BSI references

relate to the work on this

stan ard:

Commite reference AC / 16

Draft for comment9 /73 5 DC

The prep ration of this British Stand rd was entrusted b the Aerosp ce

Stand ard s Pol cy Commit e ( ACE/-) to Tech ical Commit e ACE/ 16, upon

which the fol owing bod ies were represented :

British Non-fer ous Metals Federation

Cop er Dev elopment As ociation

Ministry of Defence

Society of British Aerosp ce Comp nies Ltd

Am endm ents is ued sinc publ cation

Pag e

Ta le 1 — Technical req uirements for Cu-Al Ni Fe aloy s b r ,

Ta le 2 — Technical req uirements for Cu-Al Ni Fe aloy forg ing

This British Stand ard has be n prep red u d er the d irection of the Aerosp ce

Stand ards Pol cy Commit e and is a conv er ion an rev ision of MoD ( PE)

Specification DTD19 A, which it super edes

A British Stand ard d oes not purport to includ e al the neces ary prov isions of a

contract User of British Stand rd s are responsible for their cor ect a plcation

Com pl anc with a British Standard does not ofitself confer im m unity

f om leg al o l g ations

Sum mary of pag es

This document comprises a f ont cov er, an insid e font cov er, p g esi andi ,

p g es1 to4 an a b ck cov er

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

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

1 Scope

This British Stand rd specifies the inspection an

testing procedures, chemical composition, heat

treatment and mechanical properties for a

cop er-aluminium-nickel iron al oy sup led in the

form of rods ( bar ), sections, forg ing stock an

forg ing s

2 References

This stand rd makes reference to the folowing

stand ards publcations:

BS B10 , Pr oc d ure fr inspe ton, te tng a nd

a cc pta nc o wrought cop er a l l oys

)

BS28 2, Spe ifica tion f r cop er a nd cop er a l l oy

f rging stock a nd f r gings

BS28 4, Spe ifica tion f r cop er a nd cop er a l l oy

rod s a nd s ctons ( ther tha n frging stock

BS5 5 , Spe ifica tion f r SI u is a nd

recommend a tions f r the us o their mul tipl es a nd

o c rta in other u is

BS5 7 , Spe ifica tion f r qua ntt e , u is a nd

symb l s

BS5 7 -0, Genera l pr incipl es

BS EN25 0,Instruct ons f r the d r a ftng a nd us o

meta l l ic ma teria l sta nd a r d s

BS EN25 0-1, Genera l requir ements

)

3 Technical requirem ents

3.1 Material to this stand ard shal comply with the

tech ical req uirements specified in Ta le 1 for b r ,

rods and sections an Ta le 2 for forg ing stock and

forg ing s Al material sup led shal comply with

the req uirements a propriate to its d imensions and

condition as specified in the stand rd s g iv en in

l ne5 of Ta le 1 or Ta le 2

3.2 Sy mbols an u its in Ta le 1 and Ta le 2 shal

be interpreted in ac ord nce with BS5 5 ,

BS5 7 -0 or BS EN25 0-1

1)

In pre aration

Ta le 1 — Te hnical requirem ents for Cu-Al- Ni- Fe alo s bar , ro s and se tions

Total

impurities

Cu

—

Base

0.5

( exclu ing

Mn)

4 Form

Metho of pro uction

Lim it dim ensions (m m )

Bar , rods, an sections

Extru ed an / or roled, e tru ed an drawn, roled an drawn or forg d

5 5.1 Te h ical spe ification Sections 1 an 2 of BS B1 0

5.2 Dim ensional s and rd BS2 7 (1)

6 6.1 Delve y condition

and

heat tr atm ent

As man factured

At the o tion of the man facturer

6.2 Delve y condition co e —

7 Use condition

and

heat tr atm ent

Deliv ry con ition

—

C aracte is ics

8 S m plng

Tes pie e

Heat tr atm ent

Deliv ry con ition

9 Dim ensions conc rned mm 6u(a orD)u1 1 <(a orD )u8 ( a orD )>8

1 T ick es of cla ding on each

fac

1

Tensie

Tem pe atur

Ú

°C Ambient temp rature

p 2

m

ar a

c

2

Cr ep

a

s r s

ruptur

9 Notes

1) Material groupI I tolerances shal a ply.For rou d rods, normal tolerances

shal a ply u les close tolerances are sp cified on the order

NOT The dimensional tolerances for rods larg r than the size rang s g iv n in

BS2 7 should b a re d b twen the sup lier an the pur haser

Ta le 2 — Te hnical requirements for Cu-Al-Ni- Fe alo forg ing stock and forg ing s

Total

impurities

Cu

—

Base

0.5

(e clu ing

Mn)

4 Form

Metho of pro uction

Lim it dim ensions ( mm)

Forging stock

Extru ed an / or roled, ex tru ed an drawn,

forg d or cast

Forg ing

5 5.1 Te h ical spe ification Sections 1 an 3 of BS B1 0 Sections 1 an 4 of BS B1 0

6 6.1 Delve y condition

and

heat tr atm ent

As man factured

At the o tion of the man facturer

6.2 Delve y condition co e —

7 Use condition

and

heat tr atm ent

Deliv ery cond ition

—

C aracte is ics

8 S m plng

Tes pie e

Heat tr atm ent

1 T ick es of cla ding on each

fac

1

Tensie

Tem pe atur

Ú

°C Ambient temp rature

p 2 MPa W3 0

m MPa W7 0

ar a

( 17 u HB u2 5)

c

2

Cr ep

a

ruptur

2 NOT S ( Se line 9 )

Ta le 2 — Te hnical requirem ents for Cu- Al- Ni- Fe al o forg ing stock and forg ing s

impurities

Cu

( exclu ing

Mn)

4 Form

Metho of pro uction

Lim it dim ensions ( mm)

Forging stock

Extru ed an / or roled, e tru ed an drawn,

forg ed or cast

Forg ing

5 Forg ea i ty The test piece shal, when he ted

to 9 0°C uÚ u 9 0°C,withstan

compres ion to 2 % of its original length

9 Notes

1) The diameter of rou d forging stock shal b those a plica le to alo

groupB of BS2 7

NOT The dimensional tolerances to b a plied to rou d forging stock

outsidethe rang giv en in BS 2 7 an to forging stock of other sha es should b

a re d b twe n the sup lier an the pur haser

i

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