1、March 2011 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 7
2、5.120!$nd“1752565www.din.deDDIN EN ISO 4404-2Petroleum and related products Determination of the corrosion resistance of fire-resistant hydraulicfluids Part 2: Non-aqueous fluids (ISO 4404-2:2010)English translation of DIN EN ISO 4404-2:2011-03Minerallerzeugnisse und verwandte Produkte Bestimmung de
3、r korrosionsverhindernden Eigenschaften von schwer entflammbarenDruckflssigkeiten Teil 2: Nicht-wssrige Flssigkeiten (ISO 4404-2:2010)Englische bersetzung von DIN EN ISO 4404-2:2011-03Ptrole et produits connexes Dtermination de la rsistance la corrosion de fluides hydrauliques difficilementinflammab
4、les Partie 2: Fluides non aqueux (ISO 4404-2:2010)Traduction anglaise de DIN EN ISO 4404-2:2011-03SupersedesDIN EN ISO 4404-2:2003-12www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1203.11 DIN EN ISO 4404-2:2011-03 2 A comma is use
5、d as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants” (Secretariat: ANSI, USA) in collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthe
6、tic and biological origin” (Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-06-81 AA Spiegelausschuss zu CEN/TC 19 Gasfrmige und flssige Kraft- und Brennst
7、offe, Schmierstoffe und verwandte Produkte mit minerallstmmiger, synthetischer oder biologischer Herkunft of the Fachausschuss Minerall- und Brennstoff-normung. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3170 DIN EN ISO 3170 ISO 67
8、43-4 DIN EN ISO 6743-4 Amendments This standard differs from DIN EN ISO 4404-2:2003-12 as follows: a) normative references have been updated. Previous editions DIN EN ISO 4404-2: 2003-12 National Annex NA (informative) Bibliography DIN EN ISO 3170, Petroleum liquids Manual sampling DIN EN ISO 6743-4
9、, Lubricants, industrial oils and related products (class L) Classification Part 4: Family H (Hydraulic systems) EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4404-2 December 2010 ICS 75.120 Supersedes EN ISO 4404-2:2003English Version Petroleum and related products - Determination of the
10、 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 difficilement inflammables - Partie 2: Fluides non aqueux (ISO 4404-2:2010) Minerallerzeugnisse und
11、verwandte Produkte - Bestimmung der korrosionsverhindernden Eigenschaften von schwer entflammbaren Druckflssigkeiten - Teil 2: Nicht-wssrige Flssigkeiten (ISO 4404-2:2010) This European Standard was approved by CEN on 13 December 2010. CEN members are bound to comply with the CEN/CENELEC Internal Re
12、gulations 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 standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN me
13、mber. 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 notified to the CEN-CENELEC Management Centre has the same status as the official versions.
14、 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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloveni
15、a, 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 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nati
16、onal Members. Ref. No. EN ISO 4404-2:2010: EContents DIN EN ISO 4404-2:2011-03 EN ISO 4404-2:2010 (E) 2 Page Foreword3 1 Scope 4 2 Normative references 4 3 Principle5 4 Reagents and materials 5 5 Apparatus .5 6 Test pieces .5 7 Samples and sampling7 8 Preparation of test pieces.7 9 Procedure .8 10 E
17、xpression of results 9 11 Test report 9 Bibliography 10 Foreword This document (EN ISO 4404-2:2010) has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants” in collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of
18、 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 publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdra
19、wn 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 not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 4404-2:2003. According
20、to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
21、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 4404-2:2010 has been approved by CEN as a EN ISO 4404-2:2010 without any modification. DIN EN ISO 4404-2:2011
22、-03 EN ISO 4404-2:2010 (E) 3 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 esta
23、blish appropriate 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 classifie
24、d in ISO 6743-4. 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 resistan
25、ce of aqueous 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 edi
26、tion of the 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 DIN EN ISO 4404-2:2011-03 EN ISO 4404-2:2010 (E) 4 3 Principle Test pieces of sele
27、cted 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 classification scales.
28、 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 sizes. The
29、 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. 5.2 Watch-g
30、lasses, 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 suspension end
31、 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 spacer fitted
32、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 sufficient capac
33、ity 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. 5.6 Analyt
34、ical 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 in thickn
35、ess, 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. DIN EN ISO 4404-2:2011-03 EN ISO 4404-2:2010 (E) 5 Dimensions in millimetres Key 1 watch-glass 2 shim 3 glass hook 4 nylon spacer
36、 (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 DIN EN ISO 4404-2:2011-03 EN ISO 4404-2:2010 (E) 6 7 Samples and sampling 7.1 Unless otherwise specified, samples shall be obtained b
37、y 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 of zinc, three each of steel and aluminium, tw
38、o 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 Polish the surfaces of each test piece with ab
39、rasive 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 test piece being polished, but it is recommended
40、 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 of warm dry air. Prepared test pieces should ha
41、ve 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 Composition of metal test pieces Metal Composition %(m/m)
42、 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)” represents the mass fraction of a material. DIN E
43、N ISO 4404-2:2011-03 EN ISO 4404-2:2010 (E) 7 9 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 the hook (5.3) suspended from the watch-glass (5.2) such that (60
44、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 pieces by means of the nylon spacers and bolts (5.4), with the second
45、 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 Suspend the pairs of test pieces in the test fluid with the same immers
46、ion 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 spacer chosen should maintain the effective closure. 9.6 Place the 10 b
47、eakers, 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) h. 9.7 At the end of the test period, remove the test pieces from
48、 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 cond
49、ition according to the classification given in Table 3. 9.9 Rinse each test piece, held by the forceps in the vicinity of the suspension hole, in toluene (4.2), taking care not to disturb any deposits on the surface. Dry in a stream of warm dry air and reweigh to the nearest 0,2 mg. Table 2 Test-piece corrosion classification Classification Description 0 No change 1 Slight colour change or oxidation of less than 20 % of surface 2 Strong colour change 3 Deposits or oxidation of more than
