1、UDC621.882.2-034.2 : 621.882.3-034.2 : 620.17 DEUTSCHE NORM December 1991 Mechanical properties of fasteners Nonferrous metal bolts, screws, studs and nuts (IS0 8839 : 1986) (Enalish version of DIN EN 28 839) I EN28839 This standard incorporates the English version of Is0 8839. Mechanische Eigenscha
2、ften von Verbindungselementen; Schrauben und Muttern aus Nichteisenmetallen (IS0 8839 : 1986) Supersedes February 1981 edition of DIN 267 Part 18. European Standard EN 28 839 : 1991 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been publ
3、ished in accordance with a decision taken by CEN/TC 185 to adopt, without alteration, International Standard IS0 8839 as a European Standard. The responsible German body involved in its publication is the Normenausschu Mechanische Verbindungselemente (Fasteners Standards Committee). Previous to its
4、adoption, the IS0 Standard referred to was in any case applicable for all bolts, screws and studs made to the relevant DIN IS0 Standards. Hence, even without the decision of CEN/TC 185, it would have been necessary to adopt it, in line with the policy of the Normenausschu Mechanische Verbindungselem
5、ente providing for the gradual adoption of IS0 product standards as German Standards. In substance, this standard conforms with DIN 267 Part 18, except that titanium and its alloys are no longer covered. This standard applies for all bolts, screws, studs and nuts covered in existing DIN IS0 Standard
6、s and future DIN EN Standards and is also to be implemented in the case of products still manufactured to DIN Standards in which reference is made to DIN 267 Part 18. The DIN Standards corresponding to the IS0 Standards referred to above and in clause 2 of the EN are as follows: IS0 Standard DIN Sta
7、ndard IS0 1 DIN 102 IS0 898-1 IS0 898-2 IS0 898-7 DIN EN 20 898 Part 1 DIN IS0 898 Part 2 (at present at the stage of draft) DIN IS0 898 Part 7 (at present at the stage of draft)*) *) Due to be published shortly as DIN EN 20 898 Part 2 and Part 7 respectively. Continued overleaf. EN comprises 6 page
8、s. euth Verlag GmbH. Berlin, has the exclusive right of sale for German Standards (DIN-Normen) DIN EN 28 839 Eng/. Price group 7 03.93 Sales No. 1107 Page 2 DIN EN 28 839 Standard referred to (and not included in References) DIN 267 Part 18 Fasteners; technical delivery conditions; nonferrous metal
9、components Previous edition DIN 267 Part 18: 02.81. Amendments In comparison with the February 1981 edition of DIN 267 Part 18, the following amendments have been made. a) Titanium and titanium alloy fasteners are no longer covered. b) The standard has been editorially revised. International Patent
10、Classification F 16 B 31/00 F 16 B 35/00 F 16 B 37/00 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 28 839 October 1991 UDC 621.882.2-034.2 621.882.3-034.2 620.1 7 Descriptors: Fasteners, bolts, screws, studs, nuts, specifications, mechanical properties, tests, breaking load, designation. Eng
11、lish version Mechanical properties of fasteners Bolts, screws, studs and nuts (IS0 8839 : 1986) caractristiques mchaniques des lments de fixation; boulons, vis, goujons et crous en mtaux non ferreux (IS0 8839 : 1986) Mechanische Eigenschaften von Verbin- dungselementen; Schrauben und Muttern aus Nic
12、hteisenmetallen (IS0 8839 : 1986) This European Standard was approved by CEN on 1991-10-10 and is identical to the IS0 Standard as referred to. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a na
13、tional standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in
14、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 bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ic
15、eland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Ctassart 36, B-1050 Brussels O 1991. Copyright reserve
16、d to all CEN members. Ref. No. EN 28 839 : 1991 E Page 2 EN 28 839 : 1991 Foreword In 1990, IS0 8839 : 1986 was submitted to the CEN PQ procedure. Following the positive result of the PQ, CEN/BTagreed to submit IS0 8839 : 1986 with the following modifications to Formal Vote. Bolts, screws, studs and
17、 nuts with mechanical properties according to this standard can be used in cases where corrosion resistance or electrical conductivity are required, but no special requirement in view of these properties are specified in this standard. In the French version, replace: - bOUlOn by Vis, - bolon, Vis by
18、 Vis. In accordance with the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United
19、Kingdom. Endorsement notice The text of the international Standard IS0 8839 : 1986 was approved by CEN as a European Standard with agreed common modifications as given above. Page 3 EN 28 839 : 1991 AL5 I AIZnMgCu 0.5 1 Scope and field of application This International Standard specifies the mechani
20、cal properties of bolts, screws, studs and nuts - with nominal thread diameters, d, from M1,6 to M39 inclusive; - with metric IS0 thread in accordance with IS0 261 ; - made of copper and copper alloys or aluminium and aluminium alloys. - It does not apply to bolts, screws, studs and nuts with specia
21、l property requirements such as - corrosion resistance; - electrical conductivity AL6 I AIZn5,BMgCu 2 References IS0 209 IS0 1 I Standard reference temperature for industrial length measurements. IS0 209, Wrought aluminium and aluminium alloys - Chemical composition of wrought products (per cent). 1
22、) IS0 261, IS0 general purpose metric screw threads - General plan. IS0 42611, Wrought copper-zinc alloys - Chemical composi- tion and forms of wrought products - Part I: Non-leaded and special copper-zinc alloys. IS0 42612, Wrought copper-zinc allovs - Chemical composi- tion and forms of wrought pr
23、oducts - Part2: leaded copper- zinc alloys. IS0 427, Wrought copper-tin allo ys - Chemical composition and forms of wrought products. IS0 428. Wrought copper-aluminium allo ys - Chemical com- position and forms of wrought products. IS O 898/ 1, Mechanical properties of fasteners - Part 1 : Bolts, sc
24、rews and studs. 2) IS0 89812. Mechanical properties of fasteners - Part 2: Nuts with specified proof load values. IS0 89817, Mechanical properties of fasteners - Part 7: Torque test for bolts and screws with thread sizes from M 1 to IS0 1187, Special wrought copper alloys - Chemical composi- tion an
25、d forms of wrought products. IS0 1337, Wrought copper (having minimum copper contents of 99,s %I - Chemical composition and forms of wrought products. 10.31 3 Designation system and materials Table 1 lists the symbols for the material to be used in the designation and for marking purposes (see claus
26、e 7); reference is made to the relevant International Standard. Table 1 - Symbols for materials Bolts, screws, studs and nuts made of non-ferrous metals shall be designated in accordance with following example: Designation of a hexagon head bolt IS0 4014 - M12 x 80 made of CuZn37 (see table 1 for ap
27、propriate material symbol) : Hexagon head bolt IS0 4014 - M12 x 80 - CU2 1) At present at the stage of draft. (Revision of ISO/A 209-1971.) 2) At presenr at the stage of draft. (Revision of IS0 89811-1978.1 3) At present at the stage of draft. Page 4 EN 28 839 : 1991 Nominal thread diameter d Materi
28、al I 4 Mechanical properties 5 Mechanical properties to be tested When tested at the standard reference temperature of 20 OC (see IS0 1) using the methods described in clause 6, the bolts, screws, studs and nuts shall have the mechanical properties set out in table 2. NOTE - In case of high forming
29、operations 1e.g. special parts), the mechanical properties should be agreed between the customer and the supplier Table 3 specifies which tests shall be carried out on bolts, screws, studs and nuts. Other tests shall be subject to agree- ment between the customer and the supplier. Stress at Percenta
30、ge permanent elongation set limit after fracture strength R“ RW.2 A Table 2 - Mechanical properties Symbol CU1 min. min. min. Designation Nlmmz N/mmz % Cu-ETPor Cu-FRHC dM39 240 160 14 CU2 CU3 CuZn37 d M6 440 340 11 M6dM39 370 250 19 CuZn39Pb3 d M6 440 340 11 M6dM39 370 250 19 c- -Icus* CU5 CU6 d M1
31、2 I 470 I 340 I 22 I 12 CuNilCi d M39 !Bo 540 CuZn40MnlPb M6dM39 440 180 18 - CU7 AL1 AU CuAIlONi5Fe4 M12 c d M39 640 270 15 3 AIMg3 d M10 270 230 M10 c d M20 250 180 4 AlMg5 d M14 310 205 6 M14 d . M36 280 200 6 -. Ai3 AL4 AISilMgMn d M6 320 250 7 M6dM39 31 O 260 70 AICu4MgSi d MlO 420 290 6 M10 c
32、d M39 380 260 10 Table 3 - Mechanical properties to be tested Nominal thread diameter bolts, screws and studs Test(si to be carried out on AL6 AIZn5.5MgCu dM39 51 O 440 7 d M5 Tensile test Breaking toraue test Proof M5 Tensile test load test (also, if required, stress at permanent ser limit and perc
33、entage elongation after fracture) Page 5 EN 28 839 : 1991 o m - 8 -m u 5 2: d p 4 mm mm2 6 Test methods Symbols for materials CU1 I CU2 I CU3 I CU4 1 CU5 I CU6 I Cu7 I AL1 I AL2 AL3 I AL4 I AL5 I AL6 Minimum breaking loads“ A, Rm N For testing the stress at permanent set limit, RpO,? and the percent
34、age elongation after fracture, machined test pieces shall M3 M3.5 M4 M5 6.1 studs Tensile test applicable to bolts, screws and be used-and the test shall be carried out as specified in IS0 89811. 0,5 5.03 1210 2210 2210 2360 2970 - - 1360 1560 1610 2110 2310 2570 0.6 6.78 1630 2 980 2980 3 190 4000
35、- - 1830 2100 2170 2850 3120 3460 0.7 8.78 2110 3860 3860 4 130 5 180 - - 2370 2720 2810 3690 4040 4480 0.8 14.2 3410 6250 6250 6670 8380 - - 3830 4400 4540 5960 6530 7240 In general for tensile testing, a full size bolt, screw or stud shall be used and the test shall be carried out as specified in
36、is0 89811. For minimum breaking loads, see table 4. M6 MI1 M8 M10 Table 4 - Minimum breaking loads 1 m.1 28.9 1.25 36.6 1.5 58.0 4820 8840 6940 10690 8780 1 13540 1392(1/21460 88401 9450 11860 - - 5430 6230 6430 8440 9250 10250 10690 13580 17050 12720 - 7800 8W 8960 12140 13290 14740 13540 172 21 59
37、0 16 100 - 9880 11 350 11 350 15370 16840 18670 21460127260 34220 25520 - 1566U 17980 17980 24360 26680 29580 I M12 1 1,75 I 84.3 I M18 2.5 I 192 276001 42550 42550 46ooO; 7850 50600 73600 28750 35650 35650 43700 52900 58650 37680 58090 58090 62800 92630 69080 100500 39250 43960 48670 59660 72220 80
38、070 46080 77040 71040 76800 113300 84480 122900 ao00 53760 59520 72960 88320 97920 MU) 2.5 1245 I588oj 65090650 98ooO/144500107800156800/61250 686001 759501 93100112700/124900 MZ? i 2,5 1303 I 727201121001121001212178800133300193900 - 1848401 93930115100139400154500 M30 , 3.5 M36 4 817 1) For nuts,
39、proof load. Page 6 EN 28 839 : 1991 0,06 0,lO 0,12 021 0.24 0,45 6.2 Torsional strength test 0,lO 0,11 0,14 0.06 0.07 0,oS 0,l 0.11 0.12 0.21 O,= .O28 0.13 0.15 C,16 0.2 0,22 0.25 0,45 0.5 0,6 0.27 0.3 0.3 0,43 0.47 0.5 In general for torsional strength testing, a full size bolt or screw shall be us
40、ed and the test shall be carried out as described in IS08W7. The accuracy of the measuring device shall lie within k 7 % of the minimum breaking torque to be tested. The bolt or screw shall meet the minimum breaking torque laid down in table 5. M3.5 M4 6.3 Proof load test applicable to nuts 0,7 13 1
41、.3 1.4 1.7 0.8 0.9 0.9 1.2 1.3 1.5 1 1.9 1.9 2 2.5 1.1 1.3 1.4 1.8 1.9 2.2 For proof load testing of nuts the method described in IS0 898/2 shall be used. The nuts shall meet the proof loads which are equal to the minimum breaking loads of the respec- tive bolts, screws or studs laid down in table 4
42、. 7 Marking 7.1 Symbols Marking symbols are given in table 1. 7.2 Identification Identification marking is required for bolts, screws, studs and nuts as laid down in IS0 898/1 and IC0 898/2. Table 5 - Minimum breaking torque Nominal I threed diameter d M1.6 M2 M2.5 I I I I I M3 I 0.4 1 0,8 1 0,8 I 0.9 I 1,l I 0.5 1 0,6 1 0.6 1 0.8 I 0.8 I 0.9 I
