Bsi bs au 174 1 1979 (2000) iso 4926 1978

BRITISH STANDARD AUTOMOBILE SERIES BS AU 174 1 1979 ISO 4926 1978 Hydraulic brake systems, using non petroleum base brake fluids, for road vehicles — Part 1 Specification for non petroleum base refere[.]

BRITISH STANDARD AUTOMOBILE SERIES

174-1:1979

[ISO title: Road vehicles— Hydraul c brake system s —

Non-petroleum base referenc fluids]

U C6 9.1 3–5 2.2:6 0.1

This Bri shStan ard, ha ing

b en pre ared u der the

directonof the Rub er

Stan ardsCommi e in

consultaton wih the

Automo ileStan ards

Commi e ,was published

u derthe authoriy ofthe

Ex cutv e Bo rd an

comesinto fect on

3 Octo er1 7

This Part of this BritishStand rd has be n prep red u der the direction of the

Rub er Stand rd s Commit e in consultation with the Automobie Stand rds

Commit e It is id entical with ISO4 26 “ R oa d vehicle — Hyd r a ulc br a ke

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

This is Part1 of BS AU17 which cov er components for v ehicle braking

sy stems using non-petroleum b se fluid s It is intend ed to is ue other Parts

specify ing non-petroleum b se brake fluid an cups, bo ts and seals for use

inthe braking sy stem

An as ociated BritishStand ard wi l specify simi ar components for v ehicle

braking sy stems using petroleum b se fluid s

In d rafting this series of BritishStand ards ful consideration has be n g iv en

tothe work of subcommit e TC2 /SC2 of the International Org anization for

Stand rdization ( ISO)

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

hasbe n a prov ed as suita le for publcation, without dev iation, as a

BritishStand rd Some terminolog y and certain conv entions are not identical

with those used in BritishStand ard s; at ention is especial y drawn to the

fol owing

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asthedecimal marker

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

they should be read as “British Stand rd ”

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

p g es1 and 2 and a b ck cover

This stand rd has be n upd ated ( se copy rig ht d ate) and ma hav e had

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

the inside f ont cov er

Pag e

b

1 Scope and field ofappl cation

This International Stand ard specifies the composition an some characteristic of two reference fluid s used

for the testing of hy d raulc braking sy stems and components mounted on roa v ehicles

2 ISO compatibi ity fluid — composition

Com position

mas %

1

2

3

4

5

6

7

8

9

10

1

1

13

14

15

16

17

18

19

20

2

2

23

24

Mono thy l ether of d iethy lene g ly col

Monobuty l ether of diethy lene g ly col

Methy l ether of tripropy lene g ly col

Poly alky lene oxide triol, kinematic v is osity20 ±10cSt at3 °C, relativ e

density20/ 20°C1,0 4

Ethy lene g ly col

Diethy lene g ly col

Propy lene g ly col

Methy l isobuty l carbinol

Poly propy lene g ly col, av erag e molecular mas 2 025

Poly propy lene g ly col, av erag e molecular mas 15

Propy lene g ly col monoricinoleate

Reacted castor oi — poly propy lene g ly col

2-Methy l,2,4 pentaned iol

Monobuty l ether1,2 oxy ethy lene,1,2 oxy propy lene g ly cols, relativ e

density 20/20°C1,0 8, kinematic v is osity4 0±2 cSt at3 °C

Monobuty l ether1,2 oxy ethy lene,1,2 oxy propy lene g ly cols, relativ e

density 20/20°C1,0 8, kinematic v is osity5 ,5±3cSt at3 °C

Bora -ethy lene g ly col cond ensate ( 25% sodium tetra or ate, an y drous)

Dipheny lol prop ne

Sod ium nitrate

Sod ium tetra orate

Potas ium tetra orate

Tric esy l phosphate

Amino imid az l ne salt3 % solution

Potas ium castor oi soa ( neutral an y d rous)

N-pheny lmorphol ne

51,7

2,26

5,1

5,3

2,4

1,3

2,4

4,3

2,3

1,3

3,3

1,9

2,8

3,16

8,8

0,25

0,5

0,01

0,10

0,18

0,10

0,01

0,18

0,0

NOT I em4: Glycerine ini ated triol using charg es of5 % ethy lene o id e an 5 % pro ylene o ide

I ems1 an 1 : Butanol ini ated mono ther using charg es of5 % ethylene o ide an 5 % pro y lene o ide

a

1cSt=1mm

2

/ s A recommen ed submultple of the SI u i ( m

2

/s) for kinematc vis osiy is themm

2

/ s In practce the

centstokes( cSt) is g eneraly used

3 ISO fluid for stora g e corrosion test

3.1 Composition

3.2 Physical and chemical requirem ents

4 Ava ilabi ity

The two a ov e fluid s can be obtained f om the Society of Automotiv e Eng ine r , Inc 4 0 Commonwealth

Driv e, W ar end le, Pa 15 9 U.S.A or f om the La oratoire de recher hes et d e contrôle d u

caoutchouc1 , rue Carv és,92 20-Montroug e, FRANCE

Com position

mas %

1

2

3

4

5

6

Castor oi

Diethy lene g ly col monomethy l ether

Ethy lene g ly col monobuty l ether

Bora -g ly col cond ensate

Di t-buty l-p-c esol

m-Cresol

3 ,7 ±1,0

31,4 ±0,5

27,3 ±0,5

2,1 ±0,2

0,4 5±0,0 0

0,025±0,0 5

NOT Iems2,3,5: The diethylene g lycol monomethyl ether,ethylene g lycol mono utyl ether, an di-t-butylp-c esol shal b

tech ical g rade

Iem4: The b ra -g lycol con ensate shal b 3 p rts b mas of sodium b rate decahydrate ( Na

2 B

4 O

7 1 H

2 O) combined

wih1 0p rts b mas of1,2 pro ylene g lycol

Boi ing point at101,3kPa

pH v alue

Relativ e density20/20°C

16 to18 °C

9,9 to10,7

0,9 2 0 to0,9 80

b

ISO 4926:1978

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