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 2012 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/AS7210A AEROSPACE STANDARD AS7210 REV. A Issued 1992-07 Revised 1996-12 Reaffirme
5、d 2012-11 Superseding AS7210 Pins, Cotter, Steel, Corrosion Resistant UNS S30200 Procurement Specification for FSC 5315 RATIONALE AS7210A has been reaffirmed to comply with the SAE five-year review policy. SAE AS7210A Page 2 of 7 2.1.2 ASTM Publications: Available from ASTM, 100 Barr Harbor, West Co
6、nshohocken, PA 19428-2959. ASTM A262 ASTM E 353 ASTM D 3951 2.2 Definitions: Standard Practices for Detecting Susceptibility to lntergranular Attack in Austenitic Stainless Steels Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys Commercial Packa
7、ging DEFECT: Any nonconformance of the unit of product with specified requirements. DEFECTIVE: A unit of product which contains one or more defects. 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 the
8、same specified condition, produced as one continuous run, and submitted for vendors inspection at the same time. 2.3 Unit Symbols: % - percent (1% = 1/1 00) oF -degree Fahrenheit 3. TECHNICAL REQUIREMENTS: 3.1 Material: The cotter pins shall be made from half-round wire conforming to the following r
9、equirements: 3.1.1 Composition: Shall conform to the percentages by weight specified in Table 1, determined by wet chemical methods in accordance with ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser. SAE AS7210A Page 3 of 7 TABLE 1 - Material Compositio
10、n %by Weight %by Weight Element Min Max Carbon 0.20 Manganese 2.00 Silicon 0.75 Phosphorus 0.030 Sulfur 0.030 Chromium 17.00 Nickel 8.00 Molybdenum 0.75 Copper 0.75 Iron remainder 3.1 .2 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2248. 3.1.3 Condition: Wire
11、shall be solution heat treated free from continuous carbide network (determined in accordance with ASTM A 262, Practice E) and cold finished. 3.1.4 Tolerances: Permissible variations in cross-sectional dimensions of the half-round wire for manufacture of cotter pins shall be 0.002 inch for major axi
12、s and 0.001 inch for the minor axis. 3.2 Design: Unless otherwise specified on the part drawing, cotter pins furnished to this specification shall conform to the design (see Figure 1), dimensions (see Table 2), and other requirements specified herein, having ends slightly rounded, beveled, or pointe
13、d with one end slightly extended beyond the other to permit easy assembly (see Figure 1). 3.3 Properties: Cotter pins shall conform to the following requirement: 3.3.1 Bending: Either prong of any cotter pin shall withstand bending flat on itself, without cracking; the flat of the prong shall form t
14、he outside of the bend. 3.4 Quality: Cotter pins, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the parts. The ends of the prongs shall not be spread open. SAE AS7210A Page 4 of 7 1.094 -1 r-
15、B L _:; lti -= -2 E:27 E? I llJ . t H STYLE A STYLE B STYLE C STYLE D FIGURE 1 - Cotter Pin Dimensions and Optional Ends TABLE 2A- Cotter Pin Dimensions in Inches Nom Dia A Dia B Width H Dia Min .031 .028- .032 .022-.032 .06 .062 .056- .060 .044-.060 .12 .094 .086- .090 .069-.090 .19 .125 .116 - .12
16、0 .093- .120 .25 .156 .146- .150 .116- .150 .31 .188 .172- .176 .137- .176 .38 TABLE 2B- Cotter Pin Preferred Lengths Preferred Preferred Preferred Preferred Preferred Preferred Lengths Lengths Lengths Lengths Lengths Lengths L .030 for Nom Dia for Nom Dia for Nom Dia for Nom Dia for Nom Dia for Nom
17、 Dia inch .031 .062 .094 .125 .156 .188 .250 X X .312 X X .375 X X X .438 X X X X X .500 X X X X X .562 X X X X X .625 X X X X X .750 X X X X X .875 X X X X X 1.000 X X X X X 1.125 X X X X 1.250 X X X X X 1.375 X X X X X 1.500 X X X X X 1.625 X X X X X 1.750 X X X X X 2.000 X X X X X SAE AS7210A Pag
18、e 5 of 7 4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of parts shall supply 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 en
19、sure that the parts conform to the requirements of this specification. 4.2 Responsibility for Compliance: 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 invok
20、ed. An effective manufacturing in-process control system shall be established, subject to the approval of the purchaser, and used during production of parts. 4.3 Production Acceptance Tests: The purpose of production acceptance tests is to check, as simply as possible, using a method which is inexpe
21、nsive 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 this specification. 4.3.1 Tests to determine conformance to all technical requirements of this specification are classified
22、as acceptance tests and shall be performed on each production inspection lot. A summary of acceptance tests is specified in Table 3. Characteristic Design & Dimensions Quality Material Composition Bending TABLE 3- Summary of Acceptance Tests Req. Para. Sample Size Nondestructive Tests 3.2 Table 4 3.
23、4 Table 4 3.1 3.3.1 Destructive Tests 4.4.1 4.4.3 Test Method Conventional measuring method Visual ASTM E 353 Per 3.3.1 SAE AS7210A Page 6 of 7 4.4 Acceptance Tests Sampling: 4.4.1 Material: One sample of wire, from which cotter pins were made, for material composition from each heat of alloy. 4.4.2
24、 Nondestructive Tests -Visual and Dimensional: A random sample shall be selected from each production inspection lot in accordance with Table 4. 4.4.3 Bending: A random sample consisting of five cotter pins shall be selected from each production inspection lot. 4.4.4 Acceptance Quality: Of random sa
25、mples tested, acceptance quality shall be based on zero defectives. 4.5 Reports: TABLE 4- Sampling Data (Nondestructive Tests Visual and Dimensional) Production Inspection Lot Sample Size 2 to 15 2 16 to 50 3 51 to 150 5 151 to 500 8 501 to 3200 13 3201 to 35000 20 35001 to 500000 32 500001 and over
26、 50 The vendor of parts shall furnish with each shipment a report stating that the parts conform to the chemical composition, showing the results of tests to determine conformance to the bending requirements, and stating that the cotter pins conform to the other technical requirements of this specif
27、ication. This report shall include the purchase order number, AS721 0, lot number, contractor or other direct supplier of material, part number, nominal size, and quantity. 4.6 Rejected Lots: If a production inspection lot is rejected, the vendor of parts shall perform corrective action to screen ou
28、t or rework the defective parts, resubmit for acceptance tests inspection as in Table 3, or scrap the entire lot. Resubmitted lots shall be clearly identified as reinspected lots. SAE AS7210A Page 7 of 7 5. PREPARATION FOR DELIVERY: 5.1 Packaging and Identification: 15.1 .1 Packaging shall be in acc
29、ordance 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: COTTER PINS, STEEL, CORROSION RESISTANT AS7210 PART NUMBER LOT NUMBER PURCHASE ORDER NUMBER QU
30、ANTITY MANUFACTURERS IDENTIFICATION 6. 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. N
31、OTES: 8.1 Key Words: Cotter pins, procurement specification 8.2 The change bar ( 1 ) 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 SYSTEMS
