1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 4404-2:2010Petroleum and related products Determination of thecorrosion resistance of fire-resistant hydraulic fluidsPart 2: Non-aqueous fluids (ISO4404-2:2010)BS EN IS
2、O 4404-2:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO4404-2:2010. It supersedes BS EN ISO 4404-2:2003 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/18/-/16, Hydraulic fluids.A list of organizations
3、represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 71336 1ICS 75.120Compliance with a British Standard cannot confer
4、immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4404-2 December 2010 ICS 75.120 Supers
5、edes EN ISO 4404-2:2003English Version Petroleum and related products - Determination of the corrosion resistance of fire-resistant hydraulic fluids - Part 2: Non-aqueous fluids (ISO 4404-2:2010) Ptrole et produits connexes - Dtermination de la rsistance la corrosion de fluides hydrauliques difficil
6、ement inflammables - Partie 2: Fluides non aqueux (ISO 4404-2:2010) Minerallerzeugnisse und verwandte Produkte - Bestimmung der korrosionsverhindernden Eigenschaften von schwer entflammbaren Druckflssigkeiten - Teil 2: Nicht-wssrige Flssigkeiten (ISO 4404-2:2010) This European Standard was approved
7、by CEN on 13 December 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national st
8、andards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and
9、 notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit
10、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010
11、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4404-2:2010: EBS EN ISO 4404-2:2010EN ISO 4404-2:2010 (E) 3 Foreword This document (EN ISO 4404-2:2010) has been prepared by Technical Committee ISO/TC 28 “Petroleum products and
12、 lubricants” in collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin” the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publi
13、cation of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall
14、not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 4404-2:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulg
15、aria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice
16、 The text of ISO 4404-2:2010 has been approved by CEN as a EN ISO 4404-2:2010 without any modification. BS EN ISO 4404-2:2010ISO 4404-2:2010(E) ISO 2010 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS
17、O member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, gove
18、rnmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC
19、Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member
20、 bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4404-2 was prepared by Technical Committee ISO/TC 28, Petroleum products
21、and lubricants. This second edition cancels and replaces the first edition (ISO 4404-2:2003), of which it constitutes a minor revision. ISO 4404 consists of the following parts, under the general title Petroleum and related products Determination of the corrosion resistance of fire-resistant hydraul
22、ic fluids: Part 1: Water-containing fluids Part 2: Non-aqueous fluids BS EN ISO 4404-2:2010BS EN ISO 4404-2:2010INTERNATIONAL STANDARD ISO 4404-2:2010(E) ISO 2010 All rights reserved 1Petroleum and related products Determination of the corrosion resistance of fire-resistant hydraulic fluids Part 2:
23、Non-aqueous fluids WARNING The use of this part of ISO 4404 may involve hazardous materials, operations and equipment. This part of ISO 4404 does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this part of ISO 4404 to establish appr
24、opriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This part of ISO 4404 specifies a procedure for the determination of the corrosion-inhibiting properties of non-aqueous hydraulic fluids within the category HFD, as classified in ISO 6
25、743-4. It provides a qualitative assessment of corrosion of five of the most common metals used in the construction of hydraulic systems, but other metals and/or alloys could be added or substituted for these metals for particular installations. NOTE The determination of corrosion resistance of aque
26、ous hydraulic fluids within categories HFA, HFB and HFC is described in ISO 4404-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of th
27、e referenced document (including any amendments) applies. ISO 3170:2004, Petroleum liquids Manual sampling ISO 3819:1985, Laboratory glassware Beakers ISO 5272:1979, Toluene for industrial use Specifications BS EN ISO 4404-2:2010ISO 4404-2:2010(E) 2 ISO 2010 All rights reserved3 Principle Test piece
28、s of selected metals are polished, weighed and immersed, separately and in pairs, in the test fluid for 672 h at 35 C. At the end of the test period, the change in mass of the test piece is recorded and the appearance of both the test pieces and test fluid is assessed against arbitrary classificatio
29、n scales. 4 Reagents and materials 4.1 Heptane, commercial grade. 4.2 Toluene, conforming to the requirements of grade 2 of ISO 5272. 4.3 Abrasive cloth or paper, made of silicon carbide, of nominal grit sizes 125 m, 65 m, 37 m and 26 m. NOTE Papers and cloths are often sold against arbitrary grit s
30、izes. The above-mentioned (4.3) represent P 120, P 240, P 400 and P 600, respectively. 4.4 Absorbent cotton (cotton wool). 5 Apparatus 5.1 Beakers, of capacity 400 ml, made of borosilicate glass, generally conforming to the requirements of ISO 3819, approximately 135 mm in height, without spouts. 5.
31、2 Watch-glasses, of diameter 90 mm to 110 mm, with a hole of approximately 8 mm diameter, drilled centrally (see second paragraph of 5.3). 5.3 Glass hooks, shaped to allow free suspension of the test pieces in the beaker, either directly, or by means of the spacer (5.4), and having a spherical suspe
32、nsion end of diameter 12 mm to 15 mm. The combination of the hole in the watch-glass and/or shim, and the spherical end of the glass hook, should provide an effective closure. 5.4 Spacers and bolts, made of nylon, spacers 15 mm 10 mm 1 mm with two holes of 5 mm in diameter and 8 mm apart, each space
33、r fitted with a nylon bolt of 4 mm in diameter. Nylon spacer(s) shim(s), with a centrally drilled 8 mm diameter hole, may be needed to adjust the height of the test specimens in the beaker (see item 2 in Figure 1). 5.5 Heating bath, consisting of a thermostatically controlled bath or oven of suffici
34、ent capacity to accommodate at least 10 beakers, and capable of maintaining a temperature of (35 1) C throughout the test period. The bath shall be equipped with a stirrer, or the oven with a fan, to ensure even temperature distribution in all areas. At least four temperature sensors are required. 5
35、.6 Analytical balance, capable of weighing to the nearest 0,2 mg. 5.7 Forceps, spade-ended or round-ended, either corrosion-resistant metal or plastic, with plain inner faces. 6 Test pieces The test pieces shall be rectangles of the selected metals, 100 mm in length, 20 mm in width and 1 mm to 2 mm
36、in thickness, with a hole 4 mm to 5 mm in diameter located centrally at one end, approximately 5 mm from the edge. The composition of the five standard metals is given in Table 1. BS EN ISO 4404-2:2010ISO 4404-2:2010(E) ISO 2010 All rights reserved 3Dimensions in millimetres Key 1 watch-glass 2 shim
37、 3 glass hook 4 nylon spacer (15 10 1) 5 nylon bolt and nut, diameter 4 6 pair of test strips 7 beaker without a spout 8 test fluid Figure 1 Illustrative arrangement of test pieces in the beaker BS EN ISO 4404-2:2010ISO 4404-2:2010(E) 4 ISO 2010 All rights reserved7 Samples and sampling 7.1 Unless o
38、therwise specified, samples shall be obtained by the procedures described in ISO 3170. 7.2 A minimum laboratory sample size of 3 l is required for this test, and this shall be prepared in a single container at the sampling site. 8 Preparation of test pieces 8.1 Select 13 test pieces (Clause 6): four
39、 of zinc, three each of steel and aluminium, two of copper and one of brass, and polish the edges with a coarse abrasive cloth or paper (4.3) to remove any burr and finish with 26 m cloth or paper. Ensure that the cloth or paper used for one metal does not come into contact with any other metal. 8.2
40、 Polish the surfaces of each test piece with abrasive cloth or paper in order of fineness, finishing with 26 m cloth or paper. From this point, handle the test pieces only with the forceps (5.7). The selection of the coarser grades of cloth or paper depends on the original surface condition of the t
41、est piece being polished, but it is recommended that at least two coarser grades be used before the final polishing. 8.3 Rub the surfaces of the polished test piece with absorbent cotton (4.4) followed by absorbent cotton soaked in heptane (4.1). Rinse the test piece in heptane and dry in a current
42、of warm dry air. Prepared test pieces should have a maximum time between preparation and the test procedure. They may be kept after preparation, for up to 30 min immersed in heptane, but care should be taken to ensure that no contact occurs between test pieces of different metals. Table 1 Compositio
43、n of metal test pieces Metal Composition %(m/m) Steel C 0,35 to 0,45 Mn 0,50 to 0,80 Si max. 0,10 S max. 0,035 P max. 0,035 Copper Cu min. 99,9 (Electrolytic grade) Brass Cu 65 0,5 Zn 35 0,5 Zinc Zn min. 99,5 Aluminium Al min. 99,5 NOTE For the purposes of this part of ISO 4404, the term “%(m/m)” re
44、presents the mass fraction of a material. BS EN ISO 4404-2:2010ISO 4404-2:2010(E) ISO 2010 All rights reserved 59 Procedure 9.1 Weigh each dry test piece to the nearest 0,2 mg. 9.2 Pour (250 10) ml of test fluid into each of the 10 beakers. 9.3 In five beakers, place one test piece of each metal on
45、the hook (5.3) suspended from the watch-glass (5.2) such that (60 3) mm of the test piece is immersed in the test fluid, and the test piece is a minimum of 3 mm from the bottom of the beaker. Figure 1 gives an illustrative layout of test pieces in the beaker. 9.4 Prepare four pairs of metal test pie
46、ces by means of the nylon spacers and bolts (5.4), with the second hole in the spacer used for suspension. Check that the distance between the two test pieces is uniform and not less than 1 mm. The four pairs are steel and zinc, copper and zinc, aluminium and zinc, and steel and aluminium. 9.5 Suspe
47、nd the pairs of test pieces in the test fluid with the same immersion conditions as the single test pieces. Because of the lower suspension of the test pieces on the hook, the use of a spacer between the spherical end of the hook and the hole in the watch-glass (5.2) is generally required. The space
48、r chosen should maintain the effective closure. 9.6 Place the 10 beakers, nine containing test pieces and one of test fluid only, in the heating bath or oven (5.5) and check that the temperature of the chamber is evenly distributed at (35 1) C, within 30 min. Maintain the test conditions for (672 2)
49、 h. 9.7 At the end of the test period, remove the test pieces from the test fluid, disassemble the pairs, and lay them all out on a white absorbent paper. Examine each test piece in the two zones (liquid exposure and vapour exposure) and record the corrosion according to the classification given in Table 2. 9.8 Examine each beaker of test fluid and record the condition according to the classification given in Table 3. 9.9 Rinse each test piece, held by the forceps in the vicinity of the
