1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS7222A AEROSPACE STANDARD AS7222 REV. A Issued 1991-09 Revised 1998-11 Reaffirme
5、d 2013-10 Superseding AS7222 Aluminum Rivets, UNS A92117 2.5Cu - 0.3Mg (2117-T4) Procurement Specification FSC 5320 RATIONALE AS7222A has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE:1.1 Type:This procurement specification covers rivets made from an aluminum alloy designa
6、ted as 2117-T4, solution treated. The following specification designations and their rivet coatings are covered:AS7222 Rivets anodized per AMS 2470, chromic acid processAS7222-1 Rivets anodized per AMS 2471, sulfuric acid process1.2 Application:Primarily for joining aluminum parts where rivets havin
7、g 26 ksi minimum ultimate shear strength is adequate.2. REFERENCES:2.1 Applicable Documents:The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effec
8、t on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.2.1.1 S
9、AE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.AMS 2355 Quality Assurance Sampling and Testing of Aluminum Alloys and Magnesium Alloys, Wrought Products Except Forging Stock and Rolled, Forged, or Flash Welded RingsAMS 2470 Anodic Treatment of Aluminum Alloys,
10、 Chromic Acid ProcessAMS 2471 Anodic Treatment of Aluminum Alloys, Sulfuric Acid Process, Undyed CoatingAMS 2770 Heat Treatment of Wrought Aluminum Alloy PartsAS125251 thru AS125400 Rivet - 100 Countersunk Head, Aluminum AlloyAS125701 thru AS125850 Rivet - Universal Head, Aluminum Alloy2.1.2 NAS Pub
11、lications: Available from Aerospace Industries Association, 1250 Eye Street NW, Washington, DC 20005.MIL-STD-1312-13 Fastener Test Methods, Method 13, Double ShearMIL-STD-1312-20 Fastener Test Methods, Method 20, Single Shear2.1.3 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West C
12、onshohocken, PA 19428-2959.ASTM B 565 Shear Testing of Aluminum Alloy Rivets and Cold Heading Wire and RodsASTM D 3951 Commercial Packaging2.1.4 ASME Publications: Available from ASME, 22 Law Drive, Box 2900, Fairfield, NJ 07007-2900.ASME Y14.5M-1982 Dimensioning and Tolerancing2.2 Definitions:NON-C
13、ONFORMANCE: A departure from a specified requirement for any characteristic.NON-CONFORMING UNIT: A unit of product that has one or more non-conformances.PRODUCTION INSPECTION LOT: Shall be all finished parts of the same part number, made from a single heat of alloy, heat treated at the same time to
14、the same specified condition, produced as one continuous run, and submitted for vendors inspection at the same time.3. TECHNICAL REQUIREMENTS:3.1 Material:The rivets shall be made from material conforming to the following:3.1.1 Composition: Shall conform to the percentages by weight shown in Table 1
15、, determined in accordance with AMS 2355.SAE INTERNATIONAL AS7222A Page 2 of 9_ 3.1.2 Heading Stock: Shall be wire or rod in the T4 temper with an ultimate tensile strength not lower than 38 ksi, determined in accordance with AMS 2355.3.2 Design:Rivet design shall be for standard 100 countersunk hea
16、d in accordance with AS125251 thru AS125400, and for standard universal head in accordance with AS125701 thru AS125850 standard part drawings.3.2.1 Dimensions: The dimensions of finished parts, after all processing, shall conform to the part drawing.3.2.2 Circular Runout of Head: The circular runout
17、 (see ASME Y14.6M-1982) of rivet head relative to the shank, form a maximum shank length equal to two nominal shank diameters from the head, shall not vary by an amount which will produce a full indicator movement (FIM) greater than the value specified in Table 2 for the corresponding rivet diameter
18、, unless otherwise specified on the part drawing. The indicator reading shall be taken with the indicator stylus touching the periphery of the head as the rivet is rotated with the shank as an axis.TABLE 1 - CompositionElement Min MaxSilicon - 0.8Iron - 0.7Copper 2.2 3.0Manganese - 0.20Magnesium 0.2
19、0 0.50Chromium - 0.10Zinc - 0.25Other Impurities, each - 0.05Other Impurities, total - 0.15Aluminum remainderSAE INTERNATIONAL AS7222A Page 3 of 9_ 3.3 Fabrication:3.3.1 Heat Treatment: Following cold heading, rivets shall be solution heat treated and quenched in accordance with AMS 2770, unless oth
20、erwise specified on the part drawing.3.3.2 Coating: Following solution heat treatment as in 3.3.1, rivets shall be coated as specified for the following specification designations:a. Where AS7222 is specified, rivets shall be anodized in accordance with AMS 2470.b. Where AS7222-1 is specified, rivet
21、s shall be anodized in accordance with AMS 2471.3.4 Product Marking:Rivets shall be marked with a dimple 0.030 inch in diameter maximum and depressed 0.020 inch maximum, and located in the center of the top surface of the head, for material identification.3.5 Mechanical Properties:Rivets shall confo
22、rm to the following requirements:TABLE 2 - Rivet Head Circular Runout ToleranceNominal Diameterof Rivet ShankinchCircular Runout Tolerance, FIMFlush HeadinchProtruding Headinch0.062 0.010 0.0100.094 0.010 0.0100.125 0.010 0.0100.156 0.010 0.0150.188 0.010 0.0150.250 0.010 0.0200.312 0.015 0.0200.375
23、 0.015 0.020SAE INTERNATIONAL AS7222A Page 4 of 9_ 3.5.1 Shear Strength: The undriven strength of rivets greater than 0.094 inch in nominal diameter shall have a minimum ultimate shear strength of 26 ksi at room temperature when tested as follows:a. Double shear test in accordance with MIL-STD-1312-
24、13 or ASTM B 565.b. Single shear test in accordance with MIL-STD-1312-20.3.5.1.1 Rivets with a shank length 2.5 times the nominal shank diameter and longer shall be double or single shear tested as specified in 3.5.1. Rivets with a shank length shorter than 2.5 times the nominal shank diameter shall
25、 be single shear tested.3.5.2 Material Tensile Strength: For rivets 0.094 inch in nominal diameter or smaller, or for nonstandard diameters for which a shear test fixture is not available, tensile test shall be made on wire or rod specimens as in 3.5.2.1. Room temperature ultimate tensile strength s
26、hall be not less than 38 ksi for T4 temper, unless otherwise specified on the part drawing. The tensile strength test method shall be in accordance with AMS 2355.3.5.2.1 Heat Treatment of Tension Test Specimens: Tension test specimens shall be not less than 18 inches long, or three specimens each 6
27、inches long. The specimens shall be taken from the same material lot of wire or rod used to make the rivets and heat treated with the lot of rivets it represents.3.5.3 Driveability: Using a proper driver, the rivet shall be driven in a sheet specimen of suitable thickness. The bucked rivet head shal
28、l drive satisfactorily with head diameter of not less than 1.4 times the rivet diameter and head height not less than 0.3 times the rivet diameter. After driving, rivets shall show no cracks when visually inspected.3.6 Quality:Rivets shall be uniform in quality and condition, free from cracks, clinc
29、h or die marks, seams, fins, cold shuts, coarse grain, and other injurious non-conformances.4. QUALITY ASSURANCE PROVISIONS:4.1 Responsibility for Inspection:The vendor of parts shall supply all samples for vendors tests and shall be responsible for performance of all required tests. Purchaser reser
30、ves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the parts conform to specified requirements.4.2 Responsibility for Compliance:The manufacturers system for parts production shall be based on preventing product non-conformance rather than detecting the n
31、on-conformances at final inspection and then requiring corrective action to be invoked. An effective manufacturing in-process control system shall be established, subject to the approval of the purchaser, and used during production of parts.SAE INTERNATIONAL AS7222A Page 5 of 9_ 4.3 Production Accep
32、tance Tests:The purpose of production acceptance tests is to check, as simply as possible, using a method which is inexpensive and representative of the part usage, with the uncertainty inherent in random sampling, that the parts comprising a production inspection lot satisfy the requirements of thi
33、s specification.4.3.1 All technical requirements are acceptance tests and shall be performed on each production inspection lot. A summary of acceptance tests is specified in Table 3.4.4 Acceptance Test Sampling:4.4.1 Material: Sampling for material composition on each heat shall be in accordance wit
34、h AMS 2355.4.4.2 Non-Destructive Tests - Visual and Dimensional: A random sample of parts shall be taken from each production inspection lot; the size of the sample to be as specified in Table 4. The classification of dimensional characteristics shall be as specified in Table 5. All dimensional char
35、acteristics are considered non-conforming when out of tolerance.TABLE 3 - Summary of Acceptance TestsCharacteristicReq.Para.SampleSizeTestMethodNon-Destructive TestsProduct Marking 3.4 Tables 4 the size of the sample shall be as specified in Table 6. The sample units may be selected from those that
36、have been subjected to and passed the non-destructive tests with additional units selected at random from the production inspection lot as necessary.4.4.4 Acceptance Quality: Of random samples tested, acceptance quality shall be based on zero non-conforming units.4.5 Reports:The vendor of parts shal
37、l furnish with each shipment a report stating that the chemical composition of the parts conforms to this specification, showing the results of tests to determine conformance to the shear strength or, when applicable, tensile strength, and stating that the parts conform to the other technical requir
38、ements. This report shall include the purchase order number, AS7222, lot number, contractor or other direct supplier of material, part number, nominal size, and quantity.4.6 Rejected Lots:Failure of a destructive test requirement as specified in Table 3 shall subject the entire lot to be rejected; f
39、ailure of a non-destructive test requirement as specified in Table 3 will require the vendor of parts to perform corrective action to screen out or rework the non-conforming parts and resubmit for acceptance tests inspection as in Table 3. Resubmitted lots shall be clearly identified as reinspected
40、lots.TABLE 6 - Sampling DataDestructive TestsMechanical and MetallurgicalCharacteristicsProductionInspectionLot Size Sample SizeUp to 500 3501 to 1200 53201 to 35000 835001 & over 13SAE INTERNATIONAL AS7222A Page 8 of 9_ 5. PREPARATION FOR DELIVERY:5.1 Packaging and Identification:5.1.1 Packaging sh
41、all be in accordance with ASTM D 3951.5.1.2 Parts having different part numbers shall be packed in separate containers.5.1.3 Each container of parts shall be marked to show not less than the following information:RIVETS, ALUMINUMAS7222PART NUMBERLOT NUMBERPURCHASE ORDER NUMBERQUANTITYMANUFACTURERS I
42、DENTIFICATION6. ACKNOWLEDGMENT:A vendor shall mention this specification number in all quotations and when acknowledging purchase orders.7. REJECTIONS:Parts not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES:8.1 Key Words:Rivets,
43、Procurement Specification.8.2 The change bar ( l ) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document.PREPARED BY SAE COMMITTEE E-25, GENERAL STANDARDS FOR AEROSPACE PROPULSION SYSTEMSSAE INTERNATIONAL AS7222A Page 9 of 9_
