Bsi bs au 180 5 1983 (2000) iso 6314 1980

BRITISH STANDARD AUTOMOBILE SERIES BS AU 180 5 1983 ISO 6314 1980 Brake linings — Part 5 Method for determining resistance to water, saline solution, oil and brake fluid of brake lining material [ISO[.]

ISO 6314:1980

material

[ISO title: Road vehicles— Brake l ning s— Resistanc to water,

sal ne solution, oi and brake fluid— Test procedure]

U C 6 9.1 -5 7.6:6 0.1

This Bri shStan ard, ha ing

b en pre ared u der the

directonof the Automo ile

Stan ards Commi e ,was

published u der the authoriy

ofthe Bo rd of BSI an

comesinto fect on

3 J n ary1 8

© BSI0 -2 0

The folowing BSI references

relate to the work on this

stan ard:

Commi e reference AUE/11

Draft for comment7 /80 7 DC

This BritishStand rd was publ shed u der the direction of the Automobi e

Stand rds Commit e AUE/ - Its prep ration was entrusted to Tech ical

Commit e AUE/11 upon which the fol owing bodies were represented:

Association of Hy draul c Eq uipment Manufacturer

Automobi e Association

British Friction Materials Cou ci

Dep rtment of Transport

Lond on Transport Executiv e

Motor Ind ustry Resear h Association

National Carav an Cou ci Limited

Society of Motor Man facturer and Tra er Limited

Transport and General W orker Union

Am endm ents is ued sinc publ cation

Amd No Date of is ue Comments

Pag e

National foreword

This BritishStand ard has be n prep red u der the direction of the Automobie

Stand ards Commit e and is id entical with ISO6 14:19 0 “R oa d vehicle —

B r a ke lnings— R esista nc to wa ter , sa line solut on, oi a nd br a ke fluid—

Te tpr oc d ur e” publ shed b the International Org anization for

Stand rd ization( ISO)

Term inolog y and conventions The text of the International Stand rd has

be n a prov ed as suita le for publcation as a BritishStand rd without

d ev iation Some terminolog y and certain conv entions are not identical with those

used in BritishStand rds; at ention is especial y d rawn to the fol owing

The comma has be n used as a decimal marker In British Stand rd s it is cur ent

practice to use a ful point on the b selne as the decimal marker

W herev er the words “ International Stand rd” a pear,refer ing to this stand rd ,

they should be rea as “BritishStand ard ”

The Technical Commit e has rev iewed the prov isions of ISO61 and ISO6 1 ,

to which reference is ma e in the text, and has decid ed that they are ac epta le

for use in conju ction with this stand ard A related BritishStand rd to

ISO6 1 :19 1 is BS AU18 “ B r a ke lnings” Part3 “Method f r mea sur ement

o shea r str ength o d is br a ke pa d a nd d r um br a ke shoe a ss mble ”

At present there is no cor espond ing BritishStand ard for ISO61 Howev er, it

is intended to publ sh a related stand ard at a future d te

N T Textu l er r or Fo tnote 1) is not a plica le ISO 1 1 -1 7 is in cour e of re ision

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

Cros - referenc s

Inte national Stand rd Cor esp nding BritishStand rd

ISO1817:19 5

BS9 3 Method s o te tng vulca nized r ub er

Part A16:19 1 The r esista nc o vulca nized r ub er

tolquid s

( Technical y eq uiv alent)

ISO4 26:19 8

BS AU17 Hyd r a ulc br a ke systems, using

non-petr oleum ba se br a ke fluid s, fr r oa d vehicle

Part 1:19 9 Spe ifica tion f r non-petr oleum ba se

r efer enc fluid s

( Id entical

ISO6 1 :19 0

BS AU18 B r a ke lnings

Part 2:19 2 Method f r mea sur ement o inter na l

shea rstr ength o lning ma ter ia l

( Id entical

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 and2, an inside b ck cov er and a b ck cov er

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

0 Introduction

In a v ariety of cir umstances it is not u k own for

automotiv e brake lning s to become contaminated

b water fom rain, or salt fom sea spray , or oi

f om a le seal fai ure or fluid f om a whe l

cy linderleak

S ch contamination could cause chang es in

mechanical streng th and or phy sical sha e of a

brake lning and thereb reduce its fu ctional

ca a i ity

1 Scope and field ofappl cation

This International Stand ard specifies a la oratory

method for ex osing samples to detrimental

env ironments,measuring the efect on streng th and

sha e an comp ring the results with those f om

u contaminated samples

It a ples to drum brake l ning s and dis brake p d s

being of org anic content and intend ed for serv ice on

road v ehicles

2 Ref r nces

ISO61 , B r a king o moto vehicle a nd their

tr a iler s— Ter minology

ISO1817, Vulca nized r ub er s— R esista nc to

lquid s— Method o te t

ISO4 26, R oa d vehicle — Hyd r a ulc br a ke

systems— Non-petr oleum ba se r efer enc fluid s

ISO6 1 , R oa d vehicle — B r a ke lnings—

Inter na l shea r str ength o lning ma ter ia ls—

Te tpr oc d ur e

ISO6 1 , R oa d vehicle — B r a ke lnings— Shea r

str ength o d is br a ke pa d a nd d r um br a ke shoe

a ss mble — Te t pr oc d ur e

3 Definition

For the purpose of this International Stand rd, the

fol owing d efinition a ples:

resistanc

the a i ity to resist a chang e in thick es or shear

streng th due to contamination ex res ed as

per entag e of the fig ures for simiar

u contaminated specimens

4 Test apparatus

The test a p ratus shal consist of:

a) container , for fluids and immer ed samples;

b) b l -end ed mic ometer, for measuring sample

thick es ;

c) a material shear test rig, as des ribed

inISO6 1 or ISO6 1

5 Sa mpl ng and pr pa ra tion

— Take at random, f om the factory output, a

minimum of fifte n representativ e lning s or p ds

of nominaly the same sha e, siz and material

— Prep re samples in ac ord nce with the

req uirements of ISO6 1 or ISO6 1 ,

whichev er a propriate for the samples

— Mark al samples with a simiar p t ern of fiv e

selected spots for measurements of thick es

— Mark each sample with a disting uishing

identity

— Measure and record the thick es to a

tolerance of0,01 mm at each spot on each sample,

taking care not to ind ent the samples

— Place the test samples at random into fiv e

g roups of thre and ke p these g roups a art

6 Test procedur

Test to be per ormed at ambient temperature, which

should be noted

In ord er to present a ma imum surace to the activ e

ag ents, the samples shal be stored in a v ertical

position during the contamination period , without

touching each other

6.1 Group I

Store the thre samples in normal ro m atmosphere

for7 d y s Measure an record thick es at each

spot immediately prior to shearing

Shear test al samples in ac ord ance with ISO6 1

or ISO6 1 an record the fig ures

6.2 Group I

Store the thre samples in a b th of water

for7d ys

Remov e f om b th and d ry sur aces with

a sorbentp per

Measure and record thick es at each spot

within10min of d ry ing and immediately prior to

shearing

Shear test al samples in ac ord ance with ISO6 1

or ISO6 1 an record the fig ures

6.3 Group I I

Immer e the thre samples in a b th containing a

solution of sod ium chloride, 10 g / l, for7d ay s

Remov e f om the b th and dry the suraces with

a sorbent p per

Measure and record thick es at each spot

within10min of d ry ing and immediately prior to

shearing

Shear test al samples in ac ord ance with ISO6 1

or ISO6 1 an record the fig ures

6.4 Group IV

Immer e the thre samples in a b th of lubricating

oi, conforming to specification oi no 2 in the

Annexof ISO1817, for4 h

Remov e f om b th an d ry suraces with

a sorbentp per

Measure and record thick es at each spot

within10min ofdry ing and immediately prior

toshearing

Shear test al samples in acord nce with ISO6 1

or ISO6 1 and record the fig ures

6.5 Group V

Immer e samples in a b th of brake fluid

conforming to specification of comp tibi ity fluid

inISO4 26, for4 h

Remov e f om b th an d ry suraces with

a sorbentp per

Measure and record thick es at each spot

within10min ofdry ing and immediately prior

toshearing

Shear test al samples in ac ord nce with ISO6 1

or ISO6 1 and record the fig ures

7 Evalua tion ofresults

— For each sample an at each stag e of thick es

measurement, av erag e the fiv e read ing s and

record

— Chang e of thick es b contamination is

ex res ed as the diference in av erag e thick es

for each sample before and after contamination

The fig ures for the thre samples ma be

av erag ed to g iv e a fig ure for the product

— Chang e of shear streng th b contamination is

ex res ed as the d iference betwe n the av erag e

of the contaminated samples an that for the

u contaminated samples This ma be g iv en as a

per entag e of the av erag e v alue for

u contaminated samples

B

ISO 6314:1980

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