1、 WORLDWIDE FASTENER STANDARDWG 950 Date: 2006-04-01 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 Material and Performance Requirements of Aluminum and Steel Bodied Open and Closed End Blind Rivets FOREWORD: During the November 2005 update, revisions were
2、made to WG 101, WG 102 and WG 103. These standards specified a 3 micrometre zinc finish on the mandrels. Although only zinc was specified, Suppliers of these products were typically applying a Hexavalent chromate treatment. The use of Hexavalent chromate treatments is prohibited in accordance with t
3、he Restricted Substance Management Standard, WSS-M99P9999-A1. In order to recognize industry practice the standards were revised to permit subsequent treatments (passivates, lubricants etc.). Apart from the inclusion of this Foreword, the only change to WG 950 was to include a statement “Mandrels ar
4、e exempt from the electroplating restriction of WSS-M99A3-A.“ Some mandrels do exceed the 390HV threshold, however this has never given rise to an embrittlement issue. During the April 2006 update section 3.4 was revised to allow uncoated mandrels for aluminum closed end rivets. 1. SCOPE: This stand
5、ard covers the material, shear strength, tensile strength, mandrel breakload and mandrel retention requirements of aluminum and steel bodied open and closed end blind rivets in nominal diameters 2.4, 3.2, 4.0, 4.8, and 6.4. 1.1 REFERENCES: ISO 468 Surface roughness SAE J492 Rivets and riveting SAE J
6、454 5056 General data on wrought aluminum alloys WSD-M1A283-B2,B3,B4,B5,B6,B47,B48,B49,B53,B57 Steel, cross reference for standard parts 2. GENERAL: The various rivet types, their body/mandrel and other design feature combinations are shown in Table 1. The load to disassemble the mandrel from the bo
7、dy before the product has been assembled in a panel shall not be less than 10N for all types of rivet and mandrel combinations. After assembly, as described in Figure 4 the push-out load for the retained section of mandrel must not be less than 20N for all types of rivet and mandrel combination. 3.
8、MATERIAL: The material for the bodies and mandrels of blind rivets is shown below. 3.1 Aluminum (Al) bodies shall be manufactured from Aluminum Alloy SAE J1086 UNS A95052, A95056A, A95154A, A95251 or A95754. 3.2 The material for mild steel (MS) bodies shall be in accordance with WSD-M1A283-B3/B4/B5/
9、B6/B47/B48/B49/B53 or B57. 3.3 Stainless steel (SS) bodies shall be manufactured from Austenitic stainless steel - 300 series. 3.4 The material for carbon steel (CS) mandrels shall be any low carbon steel that meets the requirements of Clause 6. The mandrel shall be zinc coated for open end rivets a
10、nd steel closed end rivets, and uncoated for aluminum closed end rivets. 3.5 Stainless steel (SS) mandrels shall be manufactured from Austenitic stainless steel 300 series for open end rivets or 400 series for closed end rivets. 4. SHEAR STRENGTH: The shear strengths for the various body/mandrel and
11、 design feature combinations covered by this standard shall be in accordance with Table 2 when tested using a test plate as described in Figure 1. 5. TENSILE STRENGTH: The tensile strengths for the various body/mandrel and design feature combinations covered by this standard shall be in accordance w
12、ith Table 2 when tested using a test plate as described in Figure 2. WORLDWIDE FASTENER STANDARDWG 950 Date: 2006-04-01 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 6. MANDREL BREAKLOAD: The mandrel breakloads for the various body/mandrel and design featu
13、re combinations covered by this standard shall be in accordance with Table 3 when tested using a test rig as described in Figure 3. Mandrels are exempt from the electroplating restriction of WSS-M99A3-A. 7. TEST PLATE: The test plates shall be steel hardened and tempered to 530HV min. The surface ro
14、ughness of mating faces shall be in the range N2 to N5 when tested in accordance with ISO 468. Table 1 - Rivet types Design Rivet Type Feature A B C D E F G H I J K L M N O P Domed Head * * * * * * * * Countersunk Head * * * * * * * * Open End * * * * * * * * Closed End * * * * * * * * Body Material
15、1)A Al Al Al M M M M Al Al Al Al SS SS SS SSMandrel Material1)C C C C C C C C SS SS SS SS SS SS SS SS1) For material coding details (i.e. Al, CS, MS and SS) See Clause 3. Table 2 - Shear strength (N) and tensile strength (N) Performance Body Dia. Rivet Type Nom. A B C D E F G H I J K L M N O P Minim
16、um 2.4 310 580 310 Shear 3.2 530 1100 1160 1150 530 1100 1870 2100 Strength 4.0 850 1600 1650 1700 850 1600 2800 3300 (N) 4.8 1160 2200 2400 2400 1160 2200 3900 4300 6.4 2050 3750 2050 Minimum 2.4 360 760 360 Tensile 3.2 670 1450 1380 1200 670 1540 2000 2200 Strength 4.0 1020 2200 2090 1850 1020 220
17、0 3110 4000 (N) 4.8 1420 3100 3020 2800 1420 3100 4400 4400 6.4 2490 4000 2490 Table 3 - Mandrel breakload (kN) Mandrel Body Rivet Type Breakload Nom. A B C D E F G H I J K L M N O P Test Hole Dia. Dia. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. 2.4 0.78 1.22 1.160 1.600 1.140 1.300 1.330 2.2
18、20 2.50 2.55 3.2 1.82 3.5 2.670 3.560 22.90 26.90 2.890 4.230 3.30 3.35 4.0 3 5 3.340 4.450 3.200 3.780 5.120 6.450 4.10 4.15 4.8 4 7.6 5.120 6.450 4.620 5.380 6.230 8.450 4.90 4.95 6.4 8 10.76 8.670 10.500 8.000 10.760 13.300 16.000 6.55 6.60 WORLDWIDE FASTENER STANDARDWG 950 Date: 2006-04-01 Print
19、ed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 Figure 1 - Test Plate for Shear Testing Blind Rivets D = Nominal Rivet Diameter Plate Thickness (Min) W Tp Tc (Min) 0.5D 0.75D 13.0mm The test plates shall be of equal thickness. The attachment grips to the tensile
20、test machine shall be self aligning. The load shall be applied in a straight line along the shear plane of the test specimen. Test hole diameters shall be in accordance with Table 3. For rivets with maximum grip length less than the plate thickness stated in the table, the test plate combined thickn
21、ess shall be equal to the specified maximum grip length of the test rivet. Figure 2 - Test Plate for Tensile Testing Blind Rivets D = Nominal Rivet Diameter Plate Thickness (Min) W Tp Tc (Min) 0.5D 0.75D 13.0mm The test plates shall be of equal thickness. The attachment grips to the tensile test mac
22、hine shall be self aligning. The load shall be applied in a straight line along the center line of the test specimen. Test hole diameters shall be in accordance with Table 3. For rivets with maximum grip length less than the plate thickness stated in the table, the test plate combined thickness shal
23、l be equal to the specified maximum grip length of the test rivet. WORLDWIDE FASTENER STANDARDWG 950 Date: 2006-04-01 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 Figure 3 - Test Rig for Mandrel Breakload Testing Blind Rivets The load shall be applied in
24、a straight line along the center line of the test specimen. Test hole diameters in the test plates shall be in accordance with Table 3. The test assembly may comprise either one or more plates to give a total thickness equal to the specified maximum grip length of the test rivet. No plate shall be l
25、ess than 1.5mm thick. For rivets with maximum grip lengths less than 1.5mm the test plate shall be equal to the specified maximum grip length of the test rivet. Figure 4 - Test Rig for Mandrel Retention Testing Blind Rivets The load shall be applied in a straight line along the center line of the te
26、st specimen. Test hole diameters in the test plates shall be in accordance with Table 3. The test assembly may comprise either one or more plates to give a total thickness equal to the specified maximum grip length of the test rivet. No plate shall be less than 1.5mm thick. For rivets with maximum grip lengths less than 1.5mm the test plate combined thickness shall be equal to the specified maximum grip length of the test rivet.
