1、DEUTSCHE NORM SeDtember 2000 Connections for general use and fluid power Ports and stud ends with IS0 261 threads with elastomeric or metal-to-metal sealinci DIN - Part 3: Stud ends with metal-to-metal sealing (type B) (IS0 9974-3 : 1996) English version of DIN EN IS0 9974-3 EN IS0 9974-3 ICs 23.100
2、.60 Supersedes parts of Leitungsanschlsse fr Fluidtechnik und allgemeine Anwendung - Einschraublcher und Einschraubzapfen mit Gewinde nach IS0 261 und Elastomerdichtung oder metallener Dichtkante - Teil 3: Einschraubzapfen mit metallener Dichtkante (Typ B) DIN 3852-1, February 1992 edition. (IS0 997
3、4-3 : 1996) European Standard EN IS0 9974-3 : 2000 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been published in accordance with a decision taken by ECISS/TC 29 to adopt, without alteration, International Standard IS0 9974-3 as a Europ
4、ean Standard. The responsible German body involved in its preparation was the Normenausschuss Rohrverschraubungen (Pipe Joints Standards Committee). The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: IS0 261 IS0 3448 DIN 51519 IS0 6508 IS
5、0 6803 Supplement to DIN 13-12 IS0 4759-1 DIN IS0 4759-1 DIN 501 03-1 and DIN EN 10004-1 *) DIN EN IS0 6803 Amendments Parts of DIN 3852-1, February 1992 edition, have been superseded by the specifications of EN IS0 9974-3, which is identical to IS0 9974-3 Previous editions DIN 3852-1 : 1953-08, 196
6、4-1 O, 1966-05, 1978-09, 1992-02. *) Currently at draft stage. Continued overleaf. EN comprises 1 O pa ?S. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 9974-3 : 2000-0 Y Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Ge
7、rmany, s the exclusive right of sale for German Standards (DIN-Normen). English price group O9 Sales No. 1109 03.01 Page 3 DIN EN IS0 9974-3 : 2000-09 National Annex NA Standards referred to (and not included in Normative references and Annex ZA) Supplement to DIN 13-12 IS0 metric screw threads- Coa
8、rse and fine pitch threads with diametersfrom 1 mm to 300 mm - General plan of the screw threads according to IS0 261 : 1973 DIN 501 03-1 Rockwell hardness testing of metallic materials - C, A, B, F scales DIN 51519 IS0 viscosity classification for industrial liquid lubricants DIN EN 10004-1 Metalli
9、c materials - Hardness test - Rockwell (scales A, B, C, D, E, F, G, H, K)*) DIN EN IS0 6803 Rubber or plastics hoses and hose assemblies - Hydraulic-pressure impulse test without flexing (IS0 6803 : 1994) *) Currently at draft stage. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 9974-3 Ma
10、y 2000 ICs 23.1 00.60 English version Connections for general use and fluid power Ports and stud ends with IS0 261 threads with elastomeric or metal-to-metal sealing Part 3: Stud ends with metal-to-metal sealing (type B) (IS0 9974-3 : 1996) Raccordements pour applications gnrales et transmissions hy
11、drauli- ques et pneumatiques - Orifices et lments mles filetage IS0 261 et joint en lastomre ou tanchit mtal sur mtal - Partie 3: Elments mles avec tanchit mtal sur mtal (type B) (IS0 9974-3 : 1996) Leitungsanschlsse fr Fluidtechnik und allgemeine Anwendung - Ein- schraublcher und Einschraubzapfen m
12、it Gewinde nach IS0 261 und Elastomerdichtung oder metallener Dichtkante - Teil 3: Einschraubzapfen mit metallener Dichtkante (Typ B) (IS0 9974-3 : 1996) This European Standard was approved by CEN on 2000-04-08. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate
13、 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 stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exis
14、t 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodi
15、es of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Kom
16、itee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 2000. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0 9974-3 : 2000 E Page 2 EN IS0 9974-3 : 2000 Foreword International Standard IS0 9974-3 : 1996 Co
17、nnections for general use and fluid power - Ports and stud ends with IS0 261 threads with elastomeric or metal-to-metal sealing - Part 3: Stud ends with metal-to-metal sealing which was prepared by ISO/TC 5 Ferrous metal pipes and metallic fittings of the International Organization for Standardizati
18、on, has been adopted by Technical Committee ECISS/TC 29 Steel tubes and fittings for steel tubes, the Secretariat of which is held by UNI, as a European Standard. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, an
19、d conflicting national standards withdrawn, by November 2000 at the latest. In accordance with the CENKENELEC Internal Regulations, the national standards organizations of the follow- ing countries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland,
20、 France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. (type BI, Endorsement notice The text of the International Standard IS0 9974-3 : 1996 was approved by CEN as a European Standard without any modificat
21、ion. NOTE: Normative references to international publications are listed in Annex ZA (normative). Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. In general appli- cations, a fluid may be conveyed und
22、er pressure. Components are connected through their threaded ports by stud ends on fluid conductor fittings to tubes and pipes or to hose fittings and hoses. Page 3 EN IS0 9974-3 2000 1 Scope 2 Normative references This part of IS0 9974 specifies dimensions, perform- ance requirements and test proce
23、dures for heavy-duty (S series), light-duty 1L series) and extra-light-duty (LL series) stud ends with IS0 261 threads and rnetal- to-metal sealing. It also specifies the designation of these stud ends. These stud ends should not be used for leak-free hydraulic fluid power applications be- cause the
24、y may leak if re-used. Stud ends in accordance with this part of IS09974 maybe used at working pressures up to 10 MPa (1 O0 bar 1) for the LL series, 25 MPa (250 bar) for the L series and 40 MPa (400 bar) for the S series. The permissible working pressure depends upon the stud end size, materials, d
25、esign, working conditions, appli- cation, etc. For threaded ports and stud ends specified in new designs in hydraulic fluid power applications, only IS06149 is to be used. Threaded ports and stud ends in accordance with IS0 1179, IS0 9974 and IS0 11926 are not to be used for new designs in hydraulic
26、 fluid power applications. Conformance to the dimensional information in this part of IS0 9974 does not guarantee rated perform- ance. Each manufacturer should perform testing according to the specification contained in this part of IS0 9974 to assure that components comply with the performance rati
27、ngs. The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 9974. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 9974 are en
28、couraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Stan- dards. IS0 261 :-I), IS0 general-purpose metric screw threads - General plan. IS0 3448: 1992, Industrial liq
29、uid lubricants - IS0 vis- cosit y classifica tion. IS0 4759-1 :1978, Tolerances for fasteners - Part : Bolts, screws and nuts with thread diameters be- tween ,6 (inclusive) and 150 mm (inclusive) and product grades A, B and C. IS0 5598: 1985, Fluid power systems and components - Vocabulary. IS0 6508
30、:1986, Metallic materials - Hardness test - Rockwelltest(sca1esA-B-C-D-E-F-G-H- KI. IS0 6803:1994, Rubber or plastics hoses and hose assemblies - Hydraulic pressure impulse test with- out flexing. 1) 1 bar = 0.1 MPa = 105 Pa; 1 MPa = 1 N/mmz 2) To be published. (Revision of IS0 261 :I 973) Page 4 EN
31、 IS0 9974-3 : 2000 3 Definitions 7.1.2 Materials For the purposes of this part of IS0 9974, the defi- nitions given in IS0 5598 apply. 4 Dimensions Stud ends shall conform to the dimensions shown in figure 1 and given in table 1. Hex tolerances across flats shall be in accordance with IS0 4759-1, pr
32、oduct grade C. 5 Requirements 5.1 Working pressure Stud ends made of low carbon steel shall be designed for use at the working pressures given in table 2. 5.2 Performance Stud ends made of low carbon steel shall meet at least the burst and impulse pressures given in table 2, when tested in accordanc
33、e with clause 7. 6 Metal-to-metal sealing The machined seal edge is compressed during as- sembly. This causes damage to the sealing face of the port. Safe re-assembly is not possible. A high surface pressure shall also be obtained, otherwise leakage is possible. 7 Test methods Parts used for the cyc
34、lic endurance or burst test shall not be tested further, used or returned to stock. 7.1 Burst pressure test 7.1.1 Principle Test three samples to confirm that stud ends in ac- cordance with this part of IS0 9974 meet or exceed a ratio of 4:l between the relevant burst and working Dress ures. Test bl
35、ocks shall be unplated and to 50 HRC (see IS0 6508). Stud from low carbon steel and dated. 7.1.3 Procedure 7.1.3.1 Thread lubrication hardened to 45 HRC ends shall be made For testing only, threads and contact surfaces shall be lubricated with hydraulic oil with a viscosity of VG 32 in accordance wi
36、th IS0 3448 prior to the application of torque. 7.1.3.2 Stud end torque Test stud ends after application of the torques given in table 3. 7.1.3.3 Pressure rise rate During the burst test, the rate of pressure rise shall not exceed 138 MPa/min (1 380 bar/rnini. 7.1.4 Test report Test results and cond
37、itions shall be reported on the test data form given in annex A. 7.2 Cyclic endurance (impulse) test 7.2.1 Principle Test six samples at their respective impulse press- ures. 7.2.2 Materials Use the same materials as those given in 7.1.2 7.2.3 Procedures 7.2.3.1 Thread lubrication Apply lubricant as
38、 specified in 7.1.3.1. 7.2.3.2 Stud end torques Apply torque as specified in 7.1.3.2 7.2.3.3 Cycle and pressure rise rate The cycle rate shall be uniform between 0.5 Hz and 1.3 Hz and shall conform to the wave pattern shown in IS0 6803, except that the pressure rise rate shall be adjusted accordingl
39、y. Page 5 EN IS0 9974-3 : 2000 L4 kO.2 8 8 12 12 12 12 14 14 16 16 18 20 22 Surface roughness in micrornetres L5 L6 + 0.3 min. 0 1.5 2 2 3 2.5 - 3 4 M8x1 MlOxl M12 x 1,5 M14x1,5 MI6 x 1.5 M18 x 1,5 M20 x 1,531 M22 x 1,5 M26 x 1.5 M27 x 2 M33 x 2 M42 x 2 M48 x 2 5 (width across flats) Figure 1 - Stud
40、 end with metal-to-metal sealing (type B) Table 1 - Dimensions of stud ends with metal-to-metal sealing (type BI Dimensions in millimetres LL ?om. ries to1.2) d5 Ls iom.1) - 4 6 7 9 11 - 14 18 - 23 30 36 - es to1.2) - - + 0.18 O + 0.18 O + 0.22 O + 0.22 O + 0.27 O - + 0.27 O + 0.27 O - + 0.33 O + 0.
41、33 O + 0.39 O - S! iom.1 - - - 4 5 7 8 10 12 - 16 20 25 32 - *es tO1.2) - - - +0,18 O +0,18 O + 0.22 O + 0.22 O + 0.22 O + 0.27 O - + 0.27 O + 0.33 O + 0.33 O + 0.39 O - 1) Maximum nominal diameter. 2) Tolerance corresponding to H13 in accordance with IS0 286-2 3) For measurement applications. - d9
42、O - 0.2 12 14 17 19 21 23 25 27 31 32 39 49 55 - - dl o O - 0.5 11 13 16 18 20 22 24 26 30 30.5 37 47 53 - - dl 1 O - 0.2 64 8.4 9.7 11.7 13.7 15.7 17.7 19.7 23.7 24 30 39 45 - - r - 1 - 5 - 12 14 17 19 22 24 27 27 32 32 41 50 55 - - W - o. 1 Page 6 EN IS0 9974-3 : 2000 Series Table 2 - Pressures fo
43、r stud ends with metal-to-metal sealing (type B) Thread I MPa Test pressure 13,3 13,3 33,2 33,2 33,2 33,2 33,2 21.3 21,3 13.3 13.3 13.3 Working pressure (1 33) (1 33) (332) (332) (332) (332) (332) (213) (213) (1 33) (1 33) (1 33) Burst s Impulse 1) MPa I (bar) M33 x 2 10 M42 x 2 10 M48 x 2 10 MI2 x
44、1.5 40 M34x 1,5 40 M16 x 1.5 40 MI8 x 1.5 40 M20 x 1,5 2) 40 M22 x 1.5 40 M27 x 2 40 M33 x 2 25 M42 x 2 M48 x 2 (bar) 16 16 (bar) M Pa LL I M8x1 1 MlOxl 10 10 40 40 (400) (400) 25 25 25 25 25 1 O0 1 O0 1 O0 1 O0 1 O0 (1 000) (1 000) (1 000) (1 000) (1 000) (640) (640) MlOxl MI2 x 1.5 M14x1.5 MI6 x 1
45、.5 MI8 x 1.5 M22 x 1.5 M26 x 1,5 L 16 16 64 64 40 40 40 (400) (400) (400) 160 160 160 160 160 160 160 (1 600) (1 600) (1 600) (1 600) (1 600) (1 600) (1 600) (250) 1 O0 (1 000) 64 64 (640) (640) VOTE -These pressures were established using fittings made of low carbon steel when tested in accordance
46、with clause 7 1) Cyclic endurance test pressure. 2) For measurement applications. Page 7 EN IS0 9974-3 : 2000 Table 3 -Torques for stud end qualification test Series LL L S Thread MSxl MlOxl MlOxl M12 x 1.5 M14x 1.5 M16x1.5 M18x1,5 M22 x 1,5 M26 x 1,5 M33 x 2 M42 x 2 M48 x 2 M12 x 1.5 M14x1.5 M16x 1
47、,5 M18 x 1,5 M20 x 1,5 M22 x 1,5 M27 x 2 M33 x 2 M42 x 2 M48 x 2 Torque Nm + 10 Yo O 10 15 20 30 50 70 90 150 21 o 380 550 700 45 60 90 120 170 190 320 4 50 600 800 NOTE - These torque values are for testing only Assembly tightening torque depends on many factors, including lubrication, coating and
48、surface finish. The manufacturer shall be consulted. 7.2.4 Requirements The six samples tested shall pass a cyclic endurance test of 1 O00 O00 cycles. 7.2.5 Test report Test results and conditions shall be reported on the test data form given in annex A. 8 Designation of stud ends The stud ends shal
49、l be designated by al “Stud end“; b) c) d) reference to this part of IS0 9974, .e. 9974-3; thread size (d, x Pl; stud end series heavy duty (SI, light duty (L extra-light duty (LLII. EXAMPLE Stud end IS0 9974-3 - MI0 x 1,5 S or 9 Identification statement (Reference to this part of IS0 9974) Use the following statement in test reports, cata- logues and sales literature when electing to comply with this pari of IS0 9974: “Stud ends with metal-to-metal sealing conform to IS0 9974-3:1996, Connections for general use and fluid power - Ports and stud e
