draft uganda standard€¦ · a.1 specific requirements for the different iso categories of...

DRAFT UGANDA STANDARD

DUS 2159-3

First Edition yyyy-mm-dd

Reference number DUS 2159-3: 2019

© UNBS 2019

Hydraulic fluid — Performance Classifications — Part 3: Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU

DUS 2159-3: 2019

ii © UNBS 2019 – All rights reserved

Compliance with this standard does not, of itself confer immunity from legal obligations

A Uganda Standard does not purport to include all necessary provisions of a contract. Users are responsible for its correct application

© UNBS yyyy

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written permission from UNBS.

Requests for permission to reproduce this document should be addressed to

The Executive Director Uganda National Bureau of Standards P.O. Box 6329 Kampala Uganda Tel: +256 414 333 250/1/2/3 Fax: +256 414 286 123 E-mail: [email protected] Web: www.unbs.go.ug

mailto:[email protected]

DUS 2159-3:2019

© UNBS 2019 – All rights reserved iii

Contents Page

Foreword ............................................................................................................................................................ iv

1 Scope ...................................................................................................................................................... 1

2 Normative references ............................................................................................................................ 1

3 Terms and definitions ........................................................................................................................... 3

4 Viscosity classification ......................................................................................................................... 3 5.1 General requirements ........................................................................................................................... 3 5.2 Performance categories ....................................................................................................................... 3 5.3 Specific requirements ........................................................................................................................... 3

6 Packaging ............................................................................................................................................... 3

7 Labelling ................................................................................................................................................. 4

8 Sampling ................................................................................................................................................ 4

Annex A (normative) Laboratory/bench test requirements .......................................................................... 5 A.1 Specific requirements for the different ISO categories of hydraulic fluids..................................... 5

Bibliography ...................................................................................................................................................... 11

DUS 2159-3: 2019

iv © UNBS 2019 – All rights reserved

Foreword

Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and Cooperatives established under Cap 327, of the Laws of Uganda, as amended. UNBS is mandated to co-ordinate the elaboration of standards and is

(a) a member of International Organisation for Standardisation (ISO) and

(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and

(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO).

The work of preparing Uganda Standards is carried out through Technical Committees. A Technical Committee is established to deliberate on standards in a given field or area and consists of key stakeholders including government, academia, consumer groups, private sector and other interested parties.

Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the general public for comments. The committee reviews the comments before recommending the draft standards for approval and declaration as Uganda Standards by the National Standards Council.

The committee responsible for this document is Technical Committee UNBS/TC 16, Petroleum, Subcommittee SC 1 Petroleum and Petrochemical

DUS 2159 consists of the following parts, under the general title Hydraulic Lubricating Fluid — Performance Classifications:

Part 1: General

Part 2: Specifications for categories HH, HL, HM, HV and HG

Part 3: Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU.

Part 4 Specifications for hydraulic fluids in categories HETG, HEPG, HEES and HEPR.

DUS 2159-3:2019

© UNBS 2019 – All rights reserved v

DRAFT UGANDA STANDARD DUS 2159-3: 2019

© UNBS 2019 – All rights reserved 1

Hydraulic fluid — Performance Classifications — Part 3: Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU

1 Scope

This Draft Uganda Standard specifies performance requirements, sampling and test methods for unused fire-resistant and less-flammable hydraulic fluids of the categories HFAE, HFAS, HFB, HFC, HFDR and HFDU, and is intended for hydrostatic and hydrodynamic systems in general industrial applications

Note: It is not intended for use in aerospace or power-generation applications, where different requirements apply

Types HFAE, HFAS, HFB, HFC and HFDR are “fire-resistant” fluids as defined by DUS 2159-1:2019. Most HFDU fluids, while displaying an improvement in combustion behaviour over mineral oil, fall outside this definition and are more appropriately considered “less-flammable” fluids.

2 Normative references

The following referenced documents referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

US ISO 760:1978, Determination of water — Karl Fischer method (General method)

US ISO 3104:1994, Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity and calculation of dynamic viscosity

US ISO 3170:2004, Petroleum liquids — Manual sampling

DUS 2221:2019 Standard Test Method for Determination of Low Temperature Fluidity and Appearance of Hydraulic Fluids of water content — Nitrogen purge method

DUS 2222:2019 Standard Practice for Evaluating Compatibility of Mixtures of Hydraulic Fluids

DUS ISO 3448:1992, Industrial liquid lubricants — ISO viscosity classification

DUS ISO 3733:1999, Petroleum products and bituminous materials — Determination of water — Distillation method

DUS ISO 4259:2006, Petroleum products — Determination and application of precision data in relation to methods of test

DUS ISO 4263-2:2003, Petroleum and related products — Determination of the ageing behaviour of inhibited oils and fluids — TOST test — Part 2: Procedure for category HFC hydraulic fluids

DUS ISO 4263-3:2010, Petroleum and related products — Determination of the ageing behaviour of inhibited oils and fluids using the TOST test — Part 3: Anhydrous procedure for synthetic hydraulic fluids

2 © UNBS 2019 – All rights reserved

DUS ISO 4404-1:2012, Petroleum and related products — Determination of the corrosion resistance of fire resistant hydraulic fluids — Part 1: Water-containing fluids

DUS ISO 4404-2:2010, Petroleum and related products — Determination of the corrosion resistance of fire resistant hydraulic fluids — Part 2: Non-aqueous fluids

DUS ISO 6072:2011, Rubber — Compatibility between hydraulic fluids and standard elastomeric materials

US ISO 6247:1998, Petroleum products — Determination of foaming characteristics of lubricating oils

US ISO 6296:2000, Petroleum products — Determination of water content — Potentiometric Karl Fischer titration method

DUS ISO 6618:1997, Petroleum products and lubricants — Determination of acid or base number — Colour indicator titration method

DUS ISO 6619:1988, Petroleum products and lubricants — Neutralization number — Potentiometric titration method

DUS ISO 7745:2010, Hydraulic fluid power — Fire-resistant (FR) fluids — Requirements and guidelines for use

DUS ISO 9120:1997, Petroleum and related products — Determination of air-release properties of steam turbine and other oils — Impinger method

DUS ISO 14935:1998, Petroleum and related products — Determination of wick flame persistence of fire-resistant fluids

DUS ISO 15029-1:1999, Petroleum and related products — Determination of spray ignition characteristics of fire resistant fluids — Part 1: Spray flame persistence — Hollow-cone nozzle method

DUS ISO/TS 15029-2:2012, Petroleum and related products — Determination of spray ignition characteristics of fire-resistant fluids — Part 2: Spray test — Stabilized flame heat release method

DUS ISO 20763:2004, Petroleum and related products — Determination of anti-wear properties of hydraulic fluid —Vane pump method

DUS ISO 20764:2003, Petroleum and related products — Preparation of a test portion of high-boiling liquids for the determination of water content — Nitrogen purge method

DUS ISO 20783-1:2011, Petroleum and related products — Determination of emulsion stability of fire-resistant fluids — Part 1: Fluids in category HFAE

DUS ISO 20783-2:2003, Petroleum and related products — Determination of emulsion stability of fire-resistant fluids — Part 2: Fluids in category HFB

DUS ISO 20823:2003, Petroleum and related products — Determination of the flammability characteristics of fluids in contact with hot surfaces — Manifold ignition test

DUS ISO 20843:2011, Petroleum and related products — Determination of pH of fire-resistant fluids within categories HFAE, HFAS and HFC

US ISO 20844:2004, Petroleum and related products — Determination of the shear stability of polymer-containing oils using a diesel injector nozzle

EN 14832:2005, Petroleum and related products — Determination of the oxidation stability and corrosivity of fire-resistant phosphate ester fluids

DUS 2159-3: 2019


3 Terms and definitions

No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http://www.iso.org/obp.

4 Viscosity classification

The viscosity of the hydraulic fluid shall be classified basing on the ISO viscosity classification, as per designations indicated in US ISO 34485

5.1 General requirements

The Hydraulic fluid shall consist of acceptable petroleum products, or of acceptable synthetically prepared products, or of a combination of these two types of products, compounded in all cases, with such functional additives, for example, detergents, dispersants, oxidation inhibitors and corrosion inhibitors as are necessary to enable it to comply with the other requirements of this standard.

The appearance of the delivered oils shall be clear and bright and free of any visible particulate matter, under normal visible light at ambient temperature.

To determine stability, when tested in accordance with DUS 2221:2019 the Hydraulic fluid shall remain clear and homogeneous, and shall show no evidence of separation of components and no evidence of colour change.

To determine compatibility, when tested in accordance with DUS 2222:2019, the Hydraulic fluid shall be compatible with other fluids of the same viscosity grade that comply with the requirements of this standard.

5.2 Performance categories

Candidate hydraulic fluid shall be formulated such that their performance requirements meet one of the performance categories HH, HL, HM, HV and HG as specified in DUS 2159-2:2019.

The majority of test methods specified within Tables 1 to 3 contain a statement of precision (repeatability and reproducibility). ISO 4259, which covers the use of precision data in the interpretation of test results, shall be used in cases of dispute

NOTE: The consumer shall refer to the owner’s or operator’s manual for recommended category of Hydraulic fluid to be

used in a specific Hydraulic system.

5.3 Specific requirements

In addition to meeting the requirements given in Clause 5.1 and 5.2 above, hydraulic fluid shall comply with specific specifications provided hereafter in Annex A.

6 Packaging

The condition of the drums or smaller containers and the bulk tankers into which the hydraulic fluid is filled shall have no detrimental effect on the quality of the hydraulic fluid during normal transportation and storage. Only containers of the same size filled with hydraulic fluid of the same batch identification shall be packed together in a carton. Prior to use, containers shall be firmly secured with a tamper-proof seal.

http://www.iso.org/obp


7 Labelling

Each container and each carton (if present) shall be legibly and indelibly marked with the following information in English language.

a) product name and application;

b) name and address of the manufacturer and registered trade mark if any and/or distributor’s name;

c) category of fluid according to ISO classification ;

d) viscosity according to ISO viscosity grading

e) net content;

f) origin of the product/Made in; and

g) date of production and the batch number

h) expiry date

i) warnings and cautions

8 Sampling

Sampling of hydraulic fluids shall be carried out in accordance with the appropriate procedure described in ISO 3170.

DUS 2159-3: 2019


Annex A (normative)

Laboratory/bench test requirements

A.1 Specific requirements for the different ISO categories of hydraulic fluids

Table 1 — Requirements for fluids in categories HFAE and HFAS

Characteristic or test

Unit

Specification

Test method Category HFAEabcd Category HFASabcd

Composition: oil-in-water emulsions

typically containing

95 % water (m/m), (5 °C

to 50 °C; ISO 7745)

chemical solutions in water


95 % water (m/m), (5 °C

to 50 °C; ISO 7745)

Viscosity at 40 °C, (max) mm2/s 5 5 ISO 3104

Water content % (m/m)

% (m/m)

95

-

-

95

ISO 3733

ISO 6296i

Foaming tendency/stability at

25 °C, (max)

50 °C , (max)

25 °C, (max)

ml/ml

ml/ml

ml/ml

300/10

300/10

300/10

300/10

300/10

300/10

ISO 6247

pH at 20 °C 6,7 to 10,0 6,7 to 10,0 ISO 20843

Emulsion stability (50 °C/600 h)

free oil, (max)

cream, (max)

rating

% (V/V)

% (V/V)

2A to 2R

trace

0,5

-

-

-

ISO 20783-1

Corrosion protection

visual rating of metals, (max)

visual rating of the fluid

mass changes of metal strips, (max)

-steel, copper and brass

-aluminium

-zinc

Rating

rating

mg

3

e

5 to 11

5 to 5

5 to 22

3

e

5 to 11

5 to 5

5 to 22

ISO 4404-1

Elastomer compatibility: NBR 1f, EPDM 1f and

FKM 2i elastomers, 60 °C/168 h

relative volume change .............( min)

................................................ (max)

relative hardness change .......... ( min)

................................................ (max)

change in tensile strength

%

%

IRHDg

IRHDg

%

0

7

7

2

h

0

7

7

2

h

ISO 6072


elongation at break %

h h

a These products are normally supplied as concentrates and are diluted with water by the end user. To ensure the rapid and complete mixing of the finished

fluid, the viscosity of the concentrate at 20 °C should be 350 mm2/s maximum.

b The limits given in this table can be applied at the dilution recommended by the supplier when using water selected from one of the following sources:

1. test waters listed in ISO 4404-1 and in ISO 20783-1; or

2. distilled or de-ionized water; or

3. mains water supplied by the user.

Tests should be carried out before commercial use and the results, if reported, shall indicate the type of (test) water and the dilution level used.

C The viscosity of these fluids is very low and they may be used only in equipment especially designed for such products.

d As a result of their very high water content, these fluids are expected to possess excellent fire resistance.

e Test limits are be negotiated between the supplier and the user.

f NBR 1, EPDM 1 and FKM 2 are standard reference elastomers, the compositions of which are given in ISO 6072. They are the elastomer types most

widely used, but not exclusively so, with the above fluids. While providing a useful guide to compatibility with HFAE and HFAS fluids, they can give results

that are different from commercially available rubbers of the same nominal type. If doubt exists as to their compatibility, contact the elastomer manufacturer.

g International Rubber Hardness Degree.

h Report only on request.

i ISO 6296 covers the mass fraction range 0,003 % (m/m) to 0,100 % (m/m). To use ISO 6296 to measure the water content of HFAS fluids, proceed as

follows:

— use a 100 µl syringe to take the test sample;

— dry the 100 µl syringe as described in ISO 6296:2000, 7.2.3;

— withdraw a 50 µl to 100 µl sample and titrate in accordance with ISO 6296:2000, 7.2.5.

Note that the precision of this procedure may differ from the values given in ISO 6296.

Table 2 — Requirements for fluids in categories HFB and HFC


Unit

Specification

Test method Category HFBa Category HFCa

Composition water-in-oil emulsions,


40 % water (% m/m) (5

°C to 50 °C,

ISO 7745)

water polymer

solutions, typically

containing

35 % water (% m/m)

(20 °C to 50 °C, ISO

7745)

Viscosity grade (ISO 3448) 46; 68; 100 22; 32; 46; 68

Water content % (m/m)

% (m/m)

-

40

35

-

ISO 6296b

ISO 3733

pH at 20 °C - 6,7 to 10,0 ISO 20843

Corrosion protection: ISO 4404-1

visual assessment of the metals, (max) rating 3 3

DUS 2159-3: 2019


mass changes of strips, (max) mg


-aluminium

5 to 11

5 to 5

5 to 11

5 to 5

-zinc 5 to 22 5 to 22

Foaming tendency/stability at ISO 6247

25 °C , (max) ml/ml - 300/10

50 °C , (max)

25 °C , (max)

ml/ml

ml/ml

-

-

300/10

300/10

Air release at 50 °C , (max) min - 20; 20; 25; 25 ISO 9120

Emulsion stability: ISO 20783-2

1) 1 000 h at 20 °C,

-surface oil , (max)

-accumulated free water , (max)

ml

ml

10

2

-

-change in water content at 425 ml, (max)

-change in water content at 125 ml, (max)

%

%

5

5

-

-

2) 48 h at 70 °C

-surface oil, (max)

-accumulated free water , (max)

ml

ml

3

1

- -

ISO 20783-2

3) 336 h at -10 °C/168 h at 20 °C ISO 20783-2

-surface oil , (max) ml 2 -

-accumulated free water , (max) ml 1 -

-change in water content at 5 ml, (max) % 15 -

-mean change in water content at 5 ml, (max) % 10 -

Shear stability: 17,5 MPa (175 bar)/250 cyclesf ISO 20844

- viscosity change at 20 °C, (max) % 15 -

- viscosity change at 40 °C, (max) % 15 -

- viscosity change at 100 °C, (max) % - -

-pH change, (max) - 1,0

-water content change, (max) % 5 8

-acid number change , (max) mg KOH/g 0,50 - ISO 6618

ISO 6619

Elastomer compatibility: 60 °C/168 h

NBR 1 elastomerd

-relative volume change , ( min)

...................................... , (max)

-relative hardness change , ( min)

...................................... , (max)

%

%

IRHD

IRHD

0

7

7

2

0

7

7

2

ISO 6072

Fire resistance; Spray ignition characteristicse ISO 15029-1e


-time to extinguishment of flame, (max)

s 30

30

Wick flame persistence

-mean flame persistence, (max)

s

60

60

ISO 14935

Manifold ignition test

-ignition temperature , ( min)

°C

650

600

ISO 20823

Ageing propertiesf

-pH value after test , ( min)

- insoluble, (max)

%

-

-

4

4

ISO 4263-2

Lubrication performance Vane pump

-total of ring and vane wear, (max)

mg

-

g

ISO 20763

a These fluids are supplied as the finished product.

b ISO 6296 covers the mass fraction range 0,003 % (m/m) to 0,100 % (m/m). To use ISO 6296 to measure the water content of HFC fluids, proceed as

follows:

— use a 100 µl syringe to take the test sample;

— dry the 100 µl syringe as described in ISO 6296:2000, 7.2.3;

— withdraw a 50 µl to 100 µl sample and titrate in accordance with ISO 6296:2000, 7.2.5.

Note that the precision of this procedure may differ from the values given in ISO 6296.

c For fluids with a viscosity greater than 10 mm2/s at 20 °C.

d NBR 1 is a standard reference elastomer, the composition of which is given in ISO 6072. It is the type of elastomer most widely used with the above

fluids, but not exclusively so. It provides a useful guide to the compatibility of this seal type with HFB and HFC fluids, but can give results that are different

from commercially available elastomers of the same nominal type. If doubt exists as to the compatibility, contact the elastomer manufacturer.

eThe methods published as parts of ISO 15029 (see also Annex A) measure different fluid characteristics under conditions that are not necessarily

comparable. However, performance under at least one test condition is required. The method is therefore to be agreed between the end user and the fluid

supplier in accordance with national or other requirements. ISO/TS15029-2 is currently under development and limits have not yet been established. These

are to be agreed between the end user and the fluid supplier. Where data are reported, reference shall be made to the method used.

f The test duration is 200 h.

g In view of the non-availability of test cartridges from the original supplier, new sources are currently being investigated. As yet, no precision data are

available on the alternative cartridges when testing the above fluid types and no limits can, therefore, be specified. Until these data are available, it is

recommended that the limits previously specified in ISO 20763 be used for guidance only. For HFC fluids, this means a vane and ring mass loss of 50 mg

and 180 mg, respectively.

Table 3 — Requirements for fluids in categories HFDR and HFDU


Unit

Specifications

Test method Category HFDRa Category HFDUa

DUS 2159-3: 2019


Composition synthetic fluids free of

water consisting of

phosphate esters (20 °C

to 70 °C/150 °Cb, ISO

7745)

synthetic fluids free of

water and of other

composition

(20 °C to 70 °C/150

°Cb, ISO 7745)

Viscosity grade (ISO 3448) 15; 22; 32; 46; 68; 100 15; 22; 32; 46; 68; 100

Water content, (max) % (m/m) 0.1 0.1 ISO 760 ISO

20764c

Foaming tendency/stability at

25 °C , (max)

93 °C , (max)

25 °C , (max)

ml/ml

ml/ml

ml/ml

300/10

300/10

300/10

300/10

300/10

300/10

ISO 6247

Air release at 50 °C , (max) min 8; 10; 12; 15; 25; 30 8; 10; 12; 15; 25; 30 ISO 9120

Corrosion protection

visual assessment of metals , (max)

mass changes of metal strip , (max)


-aluminium

-zinc

Rating

mg

3

5 to 11

5 to 5

5 to 22

3

5 to 11

5 to 5

5 to 22

ISO 4404-2

Shear stability, 17,5 MPa (175 bar)/250 cycles

-viscosity change at 20 °C, (max)

-viscosity change at 40 °C , (max)

-viscosity change at 100 °C , (max)

-acid number change , (max)

%

%

%

mg KOH/g

10

5

7

0,5

10

5

7

0,5

ISO 20844

ISO 6619

Elastomer compatibility: 100 °C/168 h

FKM 2e, EPDM 1e types (HFDR fluids)

FKMe, NBR 1e, NBR 2e types (HFDU fluids)

relative volume change, (min)

.................................... , (max)

relative hardness change, (min)

....................................... , (max)

%

%

IRHD

IRHD

0

7

7

2

0

7

7

2

ISO 6072

Fire resistance; Spray ignition characteristicse

-time to extinguishment of flame , (max)

s

30

30

ISO 15029-1e

Wick flame persistence

-mean flame persistence , (max)

s

60

-

ISO 14935

Manifold ignition test

-ignition temperature, (min)

°C

700

400

ISO 20823

Oxidation stability

-acid number increase , (max)

mass losses , (max)

⎯ iron

mg KOH/g

mg

1,5

1

-

-

EN 14832


⎯ copper

Oxidation life, (min)

h

2 -

100

ISO 4263-3

Lubrication performance Vane pump

-total of ring and vane wear , (max)

mg

f

f

ISO 20763

a These fluids are supplied as the finished product.

b The higher temperature indicates the approximate upper limit for short-term operation. This will depend upon whether the application is hydrostatic or

hydrodynamic and, for HFDU fluids, on the chemical composition of the fluid. Where doubt exists, clarification should be sought from the equipment

manufacturer and/or fluid supplier.

c ISO 20764 is applied in instances where interference by certain chemicals is to be avoided

d EPDM 1, FKM 2, NBR 1 and NBR 2 are standard reference elastomers, the compositions of which are given in ISO 6072. They are the elastomer

types most widely used with the above fluids, but not exclusively so. They will provide a useful guide to compatibility with HFDR and HFDU fluids, but may

give results that are different from commercially available elastomers of the same nominal type. EPDM 1 and FKM 2 are normally suitable for use with HFDR

fluids with the exception of the combination of FKM 2 and alkyl phosphate esters. The NBR 1 and NBR 2 reference elastomers are not suitable for use with

HFDR fluids and NBR 1 might not be suitable for use with all HFDU fluids. If doubt exists as to their compatibility, contact the elastomer manufacturer.

e The methods published as parts of ISO 15029 (see also Annex A) measure different fluid characteristics under conditions that are not necessarily

comparable. However, performance under at least one test condition is required. The method is therefore to be agreed between the end user and the fluid

supplier in accordance with national or other requirements. ISO/TS 15029-2 is currently under development and limits have not yet been established. These

are to be agreed between the end user and the fluid supplier. Where data are reported, reference shall be made to the method used.

f In view of the non-availability of test cartridges from the original supplier, new sources are currently being investigated. As yet, no precision data are

available for alternative cartridges and therefore no limits can be specified. Until these data are available, it is recommended that the limits previously

specified in ISO 20763 be used for guidance only. For both HFDR and HFDU fluids this means a vane and ring weight loss of < 30 mg and < 120 mg,

respectively.

DUS 2159-3: 2019


Bibliography

[1] CEN/TR 14489:2005, Fire-resistant hydraulic fluids — Classification and specification — Guidelines on selection for the protection of safety, health and the environment

DUS 2159-3: 2019


Certification marking

Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards (UNBS) Certification Mark shown in the figure below.

The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made thereunder. This mark can be used only by those licensed under the certification mark scheme operated by the Uganda National Bureau of Standards and in conjunction with the relevant Uganda Standard. The presence of this mark on a product or in relation to a product is an assurance that the goods comply with the requirements of that standard under a system of supervision, control and testing in accordance with the certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are continually checked by UNBS for conformity to that standard.

Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda National Bureau of Standards.

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