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.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS7229AEROSPACESTANDARDAS7229Issued 1992-10 Reaffirmed 2013-10 Superseding AMS 722
5、9F Rivets, Steel, Corrosion and Heat Resistant 18Cr - 10.5Ni - 0.70(Cb+Ta) Solution Heat Treated Procurement Specification For FSC 5320 RATIONALE AS7229 has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE:1.1 Type:This procurement specification covers aircraft quality solid
6、rivets and tubular end rivets made from a corrosion resistant steel of the type identified under the Unified Numbering System as UNS S34700.1.2 Application:Primarily for joining corrosion resistant steel parts requiring corrosion, heat, and oxidation resistance up to approximately 1300 F but not req
7、uiring high shear strength.2. REFERENCES:2.1 Applicable Documents:The following publications form a part of this specification to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other documents shall be the issue in effect on the date of the pur
8、chase order.2.1.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.2.1.1.1 Aerospace Material Specifications:AMS 2248 Chemical Check Analysis Limits, Wrought Corrosion and Heat Resistant Steels and Alloys, Maraging and Other Highly Alloyed Steels, and Iron Allo
9、ysAMS 2750 Pyrometry2.1.2 U.S. Government Publications: Available from Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.2.1.2.1 Military Standards:MIL-STD-1312 Fasteners, Test MethodsMIL-STD-2073-1 DoD Materiel, Procedures for Development and Applica
10、tion of Packaging Requirements2.1.2.2 Air Force-Navy Aeronautical Standards:AN123151 Thru AN123300 Rivet, Solid, Universal Head, AMS 7229AN123451 Thru AN123600 Rivet, Solid, 100 Flush Head, AMS 72292.1.3 ASTM Publications: Available from ASTM, 1916 Race Street, Philadelphia, PA 19103-1187.ASTM A 262
11、 Detecting Susceptibility to Intergranular Attack in Austenitic Stainless SteelsASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys2.2 Definitions:DEFECTIVE: A unit of product which contains one or more defects.PRODUCTION INSPECTION LOT:
12、 Shall be all finished parts of the same part number, made from a single heat of alloy, heat treated at the same time to the same specified condition, produced as one continuous run, and submitted for vendors inspection at the same time.2.3 Unit Symbols: - degree, angularHV10 - hardness, Vickers, me
13、asured under a 10 kg load% - percent (1% = 1/100)kg - kilogramF - degree FahrenheitSAE INTERNATIONAL AS7229 Page 2 of 8_ 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 specified i
14、n Table 1, determined by wet chemical methods in accordance with ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser.3.1.2 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2248.3.1.3 Condition: Solution heat treated, cold
15、 drawn wire or bar.3.2 Design:Unless otherwise specified on the part drawing, rivets furnished to this specification shall conform to the design, dimensions, and other requirements specified on AN123151 thru AN123300 and AN123451 thru AN123600 for solid rivets.3.3 Fabrication:Cold headed, unless pur
16、chaser permits forming heads by machining. Rivets, after forming, shall be solution heat treated free from continuous carbide network, descaled if necessary, and passivated; solution heat treatment shall be performed in a furnace atmosphere which will not cause change in composition at the surface.
17、Furnace surveys and calibration of temperature controllers and recorders shall be in accordance with AMS 2750.TABLE 1 - Material CompositionElement% By Weightmin% By WeightmaxCarbonManganeseSiliconPhosphorusSulfurChromiumNickelColumbium + TantalumMolybdenumCopperIron-17.009.0010XC-remainder0.082.00
18、1.000.0400.03019.0012.001.10 0.75 0.75 SAE INTERNATIONAL AS7229 Page 3 of 8_ 3.4 Runout of Head:The circular runout of rivet head relative to its shank shall be within the full indicator movement (FIM) specified in Table 2, unless otherwise specified on the part drawing. The measurement shall be tak
19、en with the indicator stylus touching the periphery of the protruding head, or the conical surface near the top of the flush head, as the rivet is rotated with its shank as an axis.3.5 Properties:Rivets shall conform to the following requirements:3.5.1 Hardness: Shall be not higher than 165 HV10, de
20、termined in accordance with MIL-STD-1312-6.TABLE 2 - Circular Runout ToleranceRivet ShankNominal DiameterinchRivet Head Runout ToleranceFIM, inchFlush HeadRivet Head Runout ToleranceFIM, inchProtruding Head0.0620.0940.1250.1560.1880.2500.3120.3750.0030.0030.0050.0050.0050.0050.0100.0100.0100.0100.01
21、00.0150.0150.0200.0200.020SAE INTERNATIONAL AS7229 Page 4 of 8_ 3.5.2 Formability: Solid-shank rivets shall withstand being driven cold to form a crack-free upset head having a diameter of 1.25 to 1.50 times the nominal shank diameter and a height within the range shown in Table 3 and with expansion
22、 of the shank to the full diameter of the hole in which it is installed, using a rivet having a grip length of 1.5 times the nominal shank diameter, provided that the hole diameter is not more than 0.006 inch greater than the nominal shank diameter.3.5.3 Flarability: Hollow-end rivets shall withstan
23、d being flared to a diameter of 1.5 times the nominal shank diameter without bending the shank and without cracking in the flared end.3.5.4 Embrittlement: Representative rivets, after sensitizing treatment, shall meet the copper/copper sulfate/sulfuric acid test conducted in accordance with ASTM A 2
24、62, practice E.3.6 Quality:Rivets as received by purchaser, shall be uniform in quality and condition, sound, smooth, and free from foreign materials and from imperfections detrimental to usage of the parts.4. QUALITY ASSURANCE PROVISIONS:4.1 Responsibility for Inspection:The vendor of parts shall s
25、upply all samples for vendors test and shall be responsible for performing all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the parts conform to the requirements of this specification.4.2 Responsibility for Compliance:
26、The manufacturers system for parts production shall be based on preventing product defects, rather than detecting the defects 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
27、the purchaser, and used during the production of parts.TABLE 3 - Rivet Driven Head HeightRivet ShankNominal DiameterinchHead HeightProportion of NominalDiameter0.062 and 0.0940.125 and 0.1560.188 and 0.2500.312 and 0.3750.5 to 1.00.5 to 0.80.5 to 0.80.5 to 0.7SAE INTERNATIONAL AS7229 Page 5 of 8_ 4.
28、3 Production Acceptance 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 r
29、equirements of this specification.4.4 Classification of Tests:4.4.1 Acceptance Tests: Tests to determine conformance to requirements for material (3.1), design, dimensions, and tolerances (3.2), runout of head (3.4), and hardness (3.5.1), are classified as acceptance tests and shall be performed on
30、each production inspection lot. A summary of acceptance tests is specified in Table 4.4.4.2 Periodic Tests: Tests to determine conformance to requirements for formability (3.5.2) or flarability (3.5.3) as applicable, and embrittlement (3.5.4) are classified as periodic tests and shall be performed a
31、t a frequency selected by the vendor unless frequency of testing is specified by the purchaser.4.5 Acceptance Tests Sampling:4.5.1 Material: One sample from bars or wire from each heat of alloy.4.5.2 Nondestructive Tests - Visual and Dimensional: A random sample shall be selected from each production inspection lot in accordance with Table 5.TABLE 4 - Summary of Acceptance TestsCharacteristicReq.Para.SampleSize Test MethodNondestructive TestsDesign procurement specificationPREPARED BY SAE COMMITTEE E-25, GENERAL STANDARDS FOR AEROSPACE PROPULSION SYSTEMSSAE INTERNATIONAL AS7229 Page 8 of 8_
