Bsi bs en 10092 2 2003 (2008)

BRITISH STANDARD BS EN 10092 2 2003 Hot rolled spring steel flat bars — Part 2 Ribbed and grooved spring leaves — Dimensions and tolerances on shape and dimensions The European Standard EN 10092 2 200[.]

10092- 2:2003

The Eur opean Stand rd EN 10 92-2:20 3 has the status of a

BritishStand rd

ICS 7 1 0.2 ; 7 1 0.6

Confirmed

A ugus 20 8

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Strate y Commit e on

3 Decemb r2 0

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EN10 92-2:20 3

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Sum m ary ofpag es

This d ocument comprises a f ont cov er, an inside f ont cov er, the EN title p ge,

p ges 2 to 9 and a b ck cov er

The BSI copy right notice display ed in this d ocument indicates when the

document was last is ued

N ORM E EU ROPÉEN N E

Octo er 2 0

ICS 7 14 2 ; 7 14 6

En ls ver sion

Hot rol ed spr ing steel flat bar s - Part 2: Ribbed and gr ooved

spring leaves - Dimensions and tolerances on shape and

dimensions

Plats lamin s à c a d e a ier s à re s r t - Partie 2: Plats

p ur lame d r es orts r ain e et n r vuré s - Dime sio s

et toléra c s s r la forme et le dime sio s

Warmg walzte Fla h tä e a s Fe ersta l - Tei 2:

Gerip ter Fe er sta l - Maße, For mtolera z n u d

Gr en a maße

T his Eur op a Sta d r d w as a pr ov d b CEN o 4 Se temb r 2 0

CEN memb r s are b u d to c mply with th CEN/CENELEC Inter nal Re ulatio s whic stip late th c n itio s for givin this Eur op a

Sta d r d th statu of a n tio al sta d r d w ith ut a y alteratio Up-o-d te lsts a d biblo r ap ic l refer en e c n er nin s c n tio al

sta d r ds ma b o tain d o a plc tio to th Ma a eme t Ce tr e or to a y CEN memb r

T his Eur op a Sta d r d e ists in thr ee oficial v r sio s (En ls ,Fr en h, Ger ma ) A v r sio in a y oth r la g a e ma e b tr an latio

u d r th r es o sibi ty of a CEN memb r into its own la g a e a d n tifie to th Ma a eme t Ce tr e h s th s me statu a th oficial

v ersio s

CEN memb rs are th n tio al sta d r ds b die of A ustria, Belgium, Cz c Re u lc,De mar k, Finla d,Fr an e, Ger ma y, Gre c ,

Hu g r y, Ic la d,Ir ela d, Italy,L x mb ur g, Malta,Neth r l n s, Nor wa ,Por tu al Slo akia, Sp in,Sw ed n, Sw itz r l n a d Unite

Kin d m

E U R OPE A N COMMI T TE E FO STA N DA R DIZ A T I ON

COMIT EUROPÉ N DE N RMALISATION

EUROPÄISCHES KOMIT E FÜR NORMUN

Mana ement Cente: rue de Sta s r, 3 B-10 0 Brus els

© 2 0 CEN Al rig ts of e ploitatio in a y form a d b a y me n r es r ve

w or l wid for CEN n tio al Memb r s

Ref No EN 10 9 -2:2 0 E

Contents p ge

Foreword .3

1 Sc pe 4

2 Normativ refere c s .4

3 Terms a d d finitio s 4

4 De ig atio 4

5 Dime sio s 4

6 Tolera c s o dime sio s a d s ape 6

6.1 Thick ne s (t 6

6.2 Width (b) .6

6.3 Le gth (L) 6

6.4 Straig tn s (q) .6

6.5 Con e ity a d Co c vity 6

6.6 Lateral ofs t of th gro v a d th rib .6

7 Me s reme ts 8

7.1 Thick ne s a d width 8

7.2 Le gth .8

7.3 Straig tn s 8

7.4 Con e ity a d Co c vity 9

7.5 Lateral ofs t of th gro v a d th rib .9

This doc ment (EN 10 9 -2:2 0 ) has b en pre ared by Tec nical Commite ECISS/ TC 1

"Stru tural ste l section an hot roled ste l b rs for en ine rin u e — Dimen ion an toleran es",

the secr etariat of w hic is held by BSI

This Euro e n Stan ard s al b giv en the statu of a national stan ard, either by publcation of a n

identical text or by en or sement, at the latest by Apri 2 0 , an conflctin national stan ar ds s al

b with raw n at the latest by Apri 2 0

This Euro e n Stan ar d re laces:

EURONORM 9 -7 Hot roled flats for sprin le ves

Ac or din to the CEN/CENELEC Inter nal Reg lation , the national stan ard organization of the

folow in cou tries are b u d to implement this Euro e n Stan ar d: A ustria, Belgium, Czec

Re ublc, Denmark, Finlan , Fran e, Germany , Gre ce, Hu gary , Icelan , Irelan , Italy , Lu emb urg,

Malta, Netherlan s, Norway , Portu al, Slovakia, Sp in, Sw eden, Switzer lan an the United

K in dom

1 Scope

This Part of this Euro e n Stan ard sp cifies the nominal dimen ion an the toler an es on

dimen ion an s a e of hot roled sprin ste l flat b rs for ib ed an gro ved sprin le v es

This stan ard is a plca le only to ste l flats prod ced from ste l gr ades sp cified in EN 10 8

2 Normativ e references

This Euro e n Stan ard in orp r ates by dated or u dated referen e provision fr om other

publcation These normative referen es are cited at the a pr opriate places in the text, an the

publcation are lsted here fer For dated refer en es s bseq ent amen ments to or revision of an

of these publcation a ply to this Eur op an Stan ard only w hen in orp rated in it by amen ment or

revision For u dated refer en es the latest edition of the publcation refered to a ples (in lu in

amen ments)

EN 10 7 :19 2, Definition of ste l prod cts

EN 10 8 , Hotroled ste ls for q en hed an temp red sprin s - Tec nical delvery con ition

3 Terms and definitions

For the purp ses of this Euro e n Stan ard the ter ms an definition given in EN 10 7 :19 2 a ply

4 Designation

The desig ation of hotr oled sprin ste l flat b rs for sprin le v es s al comprise:

the ter m ” Sprin ste l flat b r;

the n mb r of this Euro e n Stan ard (EN 10 9 -2);

dimen ion in mm (w idth x thic nes x len th (M, F or E, se ta le 3) ;

the n mb r of the q alty stan ar d (EN 10 8 ) an the ste l name or ste l n mb r of the or dered

ste l;

EXA MPLE

Sprin ste l flat b r EN 10 9 -2 - 6 x10x3 0 F

ste l EN 10 8 - 51CrV4

Hot roled flats for rib ed an gro v ed sprin le v es complyin w ith this Eur op an Stan ard s al b

pr od ced w ith the sp cified dimen ion given in ta le 1 an i u trated in fig re 1

Fig re 1 — Hot rol e flat for ribbe a d gro v d sprin le v s

Table 1 — Dime sio s a d ma s of h t role flats for sprin le v s

Dimen ion in mi metres

R

min

Width b

Mas a

in k g/m

a

Calculate using a d nsity of 7,8 kg/dm

3

6 Tolerances on dimensions and shape

6.1 Thick ne s ( )

The deviation from nominal thic nes ( ) s al b within the toler an e given in ta le 2

6.2 Width (b)

The deviation from nominal w idth (b) s al b w ithin the toler an e given in ta le 2

6.3 Le gth (L)

De en in on the ty pe of len th the flats s al b c t to len th w ithin toler an es given in ta le 3

6.4 Straightne s (q)

The str aig tnes s al comply w ith the req ir ements given in ta le 2

6.5 Conv exity and Concav ity

The con exity an con av ity s al comply with the req irements given in ta le 2

6.6 Lateral of s t of the groov e a d the rib

The lateral ofset of the gro ve an the rib s al comply with the r eq irements given in ta le 2

Table 2 — Tolera c s o dime sion a d s ape of h t rol e flats for sprin le v s

0,5

t 13

± 0,2

Con av ity

a

Nomin l thick nes of

le f

Re uc o of thicknes (difere ce b twee th

thic k nes at t he e ge a d t he ce tre of th le f )

10 < t

0,3

Lateral off set of h gro v e a dth rib

0,3

q 0,15 % of L b

q

L

a

T he faces may b slght l co cav e b t th result ant t ota lthick es sha ll b r ed ce b n more th n t he v alu s

Table 3 — Tolera c s o le gths

Dimen ion in mi imetres

Le gth Type of le gth

Ra g a

Limit d viation

Ord rin d ta

for th le gth

Ma ufactu ngle gth (M)

b

3 0 0 to 8 0 0

c

No e b

Fix ed le gth (F) 3 0 0 to 8 0 0

10 d

Desir ed fix ed le gth

Ex act le gth (E) 3 0 0 to 8 0 0

5

Desire ex act

10 d

lmit d v iatio

a

En uiries sh uld b ma e t o th ma uf act ur er a s to wheth r sh r ter or greater le gths c an b su ple

b

Rib e a d gro v ed spring st eel ca n also b su ple in lmit ed ma ufacturing le gt hs with a le gth range to b

state whe orde ng T he sp n b twee t he sh rt est a d gre test le gth of t his ra ge sh l b at le st 2 0 mm

(for ex ample, 6 0 0 to 8 0 0)

c

Wh n or dered b weight th le gth ma v ary b twee th max imum a d minimum dime sio s sp cifie for t he

ma nufacturingle gth

d

Wh n or dering, th tot al ra nges for th p rmis ible d v iatio s may, by agre me t b e t irely o th plus sid , for

example:

2 0

0

mm (inste d of 10 mm) in th case of fix ed le gths, or

5

0

mm (inste d of 2 mm) in th case of ex act le gt hs

7.1 Thick ne s and width

The thic nes an width s al b me s red at an p int situated at le st 10 mm from the en of the

flat b r Cold s e rin can defor m the b r en s The con ition of en s can b agre d at time of

en uiry an order

7.2 Le gth

The len th s al b me s red as the lon est len th of the flat

7.3 Straightne s

The straig tnes s al b me s red over the total len th L of the flat

7.4 Conv exity and Concav ity

The conv exity an con av ity s al b me s red at an p int situated at le st 10 mm from the en of

the flat b r

7.5 Lateral of s t of the groov e a d the rib

The later al ofset of the gro ve an the rib s al b me s red at an p int situated at le st 10 mm

from the en of the flat b r

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