1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 1 of 8 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS S-GM-90.101-GS/PL Former Designation: ESP-GM-90.101-GS TITLE: Break Mandrel Blind Rivets Metric Series (Noun Code 7220) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-GM-90.101-GS - August 2006 PR
3、INTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety an
4、d health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, GI, PP. 1.0 GENERAL: Implementation of this standard must be in accordance with the policies and procedures outlined on page MPAPS S-A-0.101. There may al
5、so be supplemental group instructions in regard to use of metric standards that should be taken into account. This standard may differ in some respects with certain segments of national standards. In recognition of these differences, the sizes and tolerance ranges used were established in an effort
6、to enable the use of commercially available items, dimensionally interchangeable worldwide. This standard establishes the dimensional and performance requirements of break mandrel blind rivets suitable for use in joining nonstructural component parts of an assembly. This specification contains the e
7、ssentials of the SAE Standard. A break mandrel blind rivet is a blind fastener with a self-contained mandrel which during the setting operation is pulled into or against the rivet body forming an upset on the blind end and expanding the body until the mandrel breaks. The inclusion of dimensional dat
8、a is not intended to imply that all the rivets described are stock production sizes. 2.0 CONTENTS: Page General 1 Design Consideration 2 Metric-Inch Related Sizes 2 Proprietary Variations 3 Design Parameters 3 Materials 3 Mandrel Hardness 3 Finish 4 Restricted Chemical Substances 4 Process 4 Perform
9、ances Requirements 4 NUMBER: MPAPS S-GM-90.101-GS/PL TITLE: Break Mandrel Blind Rivets REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 201
10、5 by Navistar, Inc. JUNE 2015 Page 2 of 8 3.0 DESIGN CONSIDERATION: Installation of a regular rivet requires tooling access to both rivet ends. If access to only one end is possible, a blind rivet which utilizes an integral pull type mandrel to deform the blind end into a clinch may be used. Rivets
11、are best suited for joints that are loaded in shear. As they fill the hole, they will prevent chucking under transverse load but, compared to bolts or screws, rivets have lower strength. The following edge distance and spacing recommendations apply to all rivets. Break mandrel blind rivets are consi
12、dered non-structural. Consideration of material being joined, such as FRP or other relatively soft materials, especially in thin sections should be given. In addition, consideration of the compatibility of rivet materials with materials being joined should be given to avoid corrosion particularly in
13、 exterior applications. Note: In all cases, it is recommended that all completed assemblies be tested under service loads to verify the design. 4.0 METRIC-INCH RELATED SIZES: During the inch to metric design transition period, the following chart of related sizes can be used for reference. Metric Se
14、ries mm Inch Series 3.2 1/8 4.8 3/16 6.3 1/4 Page Test Methods 4 Dimensions 6 Application Data For Protruding Regular Head Blind Rivets 7 Part List 7 Technical Information 8 Average recommended edge distance is two times the diameter of the rivet. In lightly loaded structures where the rivet perform
15、s only a holding function, this can be decreased to 1-1/2 diameters, and in heavily loaded structures, it may be necessary to increase it to as much as 3 diameters to develop required joint strength. Rivet pitch should be three times the diameter of the rivet. Depending upon nature of load, it may b
16、e desirable to decrease or increase this distance. However, it is generally considered that 3 diameters overcome the tendency of the material to fail and concentrate the load on the rivet. Do not space farther than 24 x T of thinnest panel. NUMBER: MPAPS S-GM-90.101-GS/PL TITLE: Break Mandrel Blind
17、Rivets REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 3 of 8 5.0 PROPRIETARY VARIATIONS: Proprietar
18、y pull-break mandrel type blind rivet design features and other details of parts produced by individual manufacturers may vary within envelope dimensions given, provided all requirements of this specification are met. 6.0 DESIGN PARAMETERS: Nominal Sizes: 3.2, 4.8, and 6.3 mm Head Style: Protruding
19、or Dome (Regular Head) Grades: Grade 19 30 51 Rivet Body Material Aluminum Alloy 5056 Or Equiv. Low Carbon Steel Stainless Steel (300 Series or equivalent) Mandrel Carbon Steel Carbon Steel Stainless Steel Material (300 or Equivalent) 7.0 MATERIALS: Rivet bodies and mandrel will be made of the mater
20、ials specified above. When the specific material analysis is not given, the analysis will be selected by the manufacturer and will be such to assure that the rivets meet the mechanical performance requirements. Ultimate Tensile Strength Newtons min Grade 19 Grade 30 Grade 51 Rivet Body Aluminum 5056
21、 or Equiv. Low Carbon Stainless Steel Steel (300 Series) Mandrel - Carbon Steel Stainless Steel 980 1380 2360 2220 3020 5340 4090 5520 9340 NOTE: Rivet sizes 4.8 mm and 6.3 mm diameters, made of carbon steel materials, should not be tested for 3.2 mm and 4.8 mm grip ranges since the rivets are stron
22、ger than the test plates. N=Newton = pound force x 4.448 * Mandrel break load is defined as the load in newtons necessary to break the mandrel when setting break mandrel types of pull mandrel blind rivets. 8.0 MANDREL HARDNESS: In the event that the mandrel hardness is suspect, the following will be
23、 used as a referee test. Using a transverse Tukon Microhardness (Knoop Scale) Test at 12.7 mm Nominal Rivet Body Mandrel Break Load* Newtons Ultimate Shear Strength Newtons min Grade 19 Grade 30 Grade 51 Grade 19 Grade 30 Grade 51 Rivet Body Rivet Body Aluminum 5056 or Equiv. Low Carbon Steel Stainl
24、ess Steel (300 Series) Aluminum 5056 or Equiv. Low Carbon Steel (Stainless Steel (300 Series) Mandrel Carbon Steel Stainless Steel Mandrel - Carbon Steel Stainless Steel Min Max Min Max Min Max 3.2 (1/8) 4.8 (3/16) 6.3 (1/4) 1780 3340 6450 2670 4670 8230 2670 5120 8670 3560 6450 10450 2890 6230 1330
25、0 4230 8450 16000 760 1690 3110 1160 2400 4450 1870 4230 7560 NUMBER: MPAPS S-GM-90.101-GS/PL TITLE: Break Mandrel Blind Rivets REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are req
26、uired to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 4 of 8 from the pulling end of the mandrel, the hardness is not to exceed Rc 40 to a depth of 0.10 mm below the surface. Mandrel surface decarburization is allowable. 9.0 FINISH: Grade 30 rivet bodies are plated with Zinc Tr
27、ivalent (ZN6A) per MPAPS G-20, Class 6A. Rivet bodies of all other grades are furnished plain (bare metal) unless otherwise specified. Because mandrels are discarded following rivet setting, mandrels of all materials may be furnished plain or with a protective coating at the option of the manufactur
28、er. 10.0 RESTRICTED CHEMICAL SUBSTANCES: Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 11.0 PROCESS: Rivets will be suitably processed and manufactured so that they are free from surface se
29、ams, flash, splits and any other defects which detrimentally affect their assembly and/or performance characteristics. 12.0 PERFORMANCE REQUIREMENTS: 12.1 Blind Head Formation: The axially applied load necessary to upset the end of the rivet body, i.e., form the blind head, will not exceed 80 percen
30、t of the actual mandrel break load (shown in table above) when tested in accordance with specified test methods. The blind head formation load is defined as a load applied to the mandrel sufficient to pull the mandrel head into the rivet body and initiate an expansion of the length of rivet body pro
31、jecting beyond the blind side surface of the joined parts. When the formation of the blind side upset occurs there will normally be a period of tensile machine cross head travel with little or no increase in applied load. 12.2 Mandrel Break Load: While the rivet is being set, the axially applied loa
32、d necessary to break the mandrel will be within the limits specified for the applicable rivet size and materials in the Table on page 2 when tested in accordance with the specified test methods. 12.3 Mandrel Retention: The mandrel will be retained within the rivet body such that in the as received s
33、tate a force of 9N or greater is required to remove it. (See Figure 1 on page 5.) 12.4 Mandrel Break Location: When the rivet is installed using the minimum thickness specified in the appropriate grip range, and the recommended hole size on page 6, the mandrel will not protrude above the top surface
34、 of the rivet head after installation. 12.5 Mandrel Push-Out Load: After the rivet has been installed in a joint thickness equal to the maximum specified grip range, the axial load required to push the remaining portion of the mandrel out of the rivet body will be greater than 22N. 12.6 Shear and Te
35、nsile Load: After the rivet has been installed, the transverse load (single shear) and axial load required to fail the assembly (separation of parts) will exceed the appropriate load shown in the Table on page 2, when tested in accordance with the specified test methods. 13.0 TEST METHODS: 13.1 Blin
36、d Head Formation and Mandrel Break Tests: The test rivet will be installed in the fixture of a tensile testing machine (see Figure 2 on page 5). The test plate(s) may be of any material capable of supporting the test load without permanent deformation. The combined thickness of test plate(s) will be
37、 as close as practicable to the maximum of the grip range of the test rivet as specified on NUMBER: MPAPS S-GM-90.101-GS/PL TITLE: Break Mandrel Blind Rivets REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technica
38、l Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 5 of 8 page 6. The hole in the test plate (s) will conform to the recommended hole size given for the rivet size on page 6. The restraining plate will be alloy steel, quenched and tempered to a
39、hardness of Rockwell C42 to 46. The hole in the plate will be mandrel diameter +.25 mm. A load will be applied axially to the mandrel at a rate of 127 mm per minute or less. The load at which it is visually observed that the rivet body end is upset or otherwise deformed to form a head on the blind s
40、ide will be recorded as the blind head formation load. Loading will continue until the mandrel breaks, and the maximum load occurring coincident with or prior to failure will be recorded as the mandrel break load. 13.2 Shear and Tensile Load Tests: Shear and tension test fixtures similar to those sh
41、own in Figures 4 and 5 will be suitably mounted in a tensile testing machine. Apply the load at a rate not less than 7.6 mm or to exceed 13.0 mm per minute until the rivet fails. The maximum load occurring coincident or prior to failure (rivet pull-out or fracture) will be recorded as the ultimate s
42、hear strength of the rivet. NUMBER: MPAPS S-GM-90.101-GS/PL TITLE: Break Mandrel Blind Rivets REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liabili
43、ty. 2015 by Navistar, Inc. JUNE 2015 Page 6 of 8 NOTE:Design of plates may be modified to add holes for shear testing two or more sizes of rivets using the same plates. Such holes will be located on the longitudinal center line of the plate, and center distances between adjacent holes will be at lea
44、st 4 times the diameter or the larger hole. Ends of plates may be drilled for pin-type mounting in testing machine. 14.0 DIMENSIONS: Dimensions in millimeters: Nominal Size D H E F P W R Recommended Hole Size Body Diameter Head (Regular) Blind Side Protru- sion Mandrel Protru- sion Mandrel Diameter
45、Radius of Fillet Diameter Height Min Max Min Max Max Max Max Nom Max Min* Max* 3.2 (1/8) 3.1 3.25 6 6.6 1 1 L+3.0 25.4 1.9 .5 3.3 3.4 4.8 (3/16) 4.65 4.85 9 10 1.5 L+4.0 27 2.9 .7 4.9 5 6.3 (1/4) 6.25 6.48 12.1 13.3 2 L+4.0 31.7 3.8 .8 6.5 6.6 * Add .15 mm for painted holes. Tensile & Shear Test Fix
46、tures Max. Rivet Fixture Plate Grip Range Thickness “T“ max mm mm 3.2 1.6 4.8 2.4 6.4 3.2 9.5 4.8 Material: Non-Warping Alloy Steel R c 46-50 Nominal Test Hole Diameter mm Rivet Size mm D Max Min 3.2 3.35 3.3 4.8 4.98 4.93 6.3 6.6 6.55 NUMBER: MPAPS S-GM-90.101-GS/PL TITLE: Break Mandrel Blind Rivet
47、s REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 7 of 8 15.0 APPLICATION DATA FOR PROTRUDING REGULA
48、R HEAD BLIND RIVETS: Dimensions in millimeters: Nominal Size Recom- Rivet Grip Range (3) Trade Number (4) Nominal Size Recom- Rivet Grip Range (3) Trade Number (4) mended Shank mended Shank Drill Length (2) Drill Length (2) Size L Size L (1) Max (1) Max 5.4 0.5 to 1.6 41 21 12.8 to 15.9 610 7 1.7 to
49、 3.2 42 4.8 #11 24.2 16 to 19.1 612 8.6 3.3 to 4.8 43 or 27.3 19.2 to 22.2 614 3.2 #30 10.2 4.9 to 6.4 44 (3/16) 4.9 mm. 30.5 22.3 to 25.4 616 (1/8) or 3.3 mm 11.7 6.5 to 7.9 45 33.7 25.5 to 28.6 618 13.4 8 to 9.5 46 9.5 0.5 to 3.2 82 16.5 9.6 to 12.7 48 12.7 3.3 to 6.4 84 19.7 12.8 to 15.9 410 15.9 6.5 to 9.5 86 F 19.1 9.6 to 12.7 88 8.3 0.5 to 3.2 62 6.3 22.2 12.8 to 15.9 810 4.8 #11 9.8 3.3 to 4.8 63 (1/4) or 25.4 16 to 19.1 812 or 11.5 4.9 to 6.4 64 6.5 mm 28.6 19.2 to 22.2 814 (3/16) 4.9 mm 14.6 6.5 to 9.5 66 31.8 22.
