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/AMS5120M AEROSPACE MATERIAL SPECIFICATION AMS5120 REV. M Issued 1942-03 Revised 2
5、009-11 Reaffirmed 2013-10 Superseding AMS5120L Steel Strip 0.68 - 0.80C (SAE 1074) (Composition similar to UNS G10740) RATIONALE AMS5120M has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification covers a carbon steel in the form of strip. 1.2 Applicati
6、on This product has been used typically for heat treated springs, spring pins, shims, spacers, and other applications where spring temper is required, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase ord
7、er forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue o
8、f that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2232 Tolerances, Carbon Steel, Sheet, Strip, and Plate AMS2259 Chemical Chec
9、k Analysis Limits, Wrought Low-Alloy and Carbon Steels AMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging Stock AMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft
10、Tubing SAE INTERNATIONAL AMS5120M Page 2 of 5 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM A 370 Mechanical Testing of Steel Products ASTM E 290 Bend Testing of Material for Duct
11、ility ASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron ASTM E 384 Microindentation Hardness of Materials 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined by wet chemi
12、cal methods in accordance with ASTM E 350 or by spectrochemical methods or other analytical methods acceptable to purchaser. TABLE 1 - COMPOSITION Element min max Carbon 0.68 0.80 Manganese 0.50 0.80 Silicon 0.10 0.30 Phosphorus - 0.040Sulfur - 0.0503.1.1 Check Analysis Composition variations shall
13、meet the applicable requirements of AMS2259. 3.2 Condition Strip shall be supplied in the following condition; hardness shall be determined in accordance with ASTM A 370: 3.2.1 0.063 inch (1.60 mm) and Under in Nominal Thickness Cold rolled and annealed having hardness not higher than 85 HRB, or equ
14、ivalent (See 8.2). 3.2.2 Over 0.063 inch (1.60 mm) in Nominal Thickness Cold rolled and annealed, or hot rolled, annealed, and descaled, having hardness not higher than 85 HRB, or equivalent (See 8.2). 3.3 Properties Strip shall conform to the following requirements; hardness tests shall be performe
15、d in accordance with ASTM A 370: 3.3.1 Decarburization Depending on thickness of the product, decarburization may be measured by a HR30N hardness step test method, or by the microhardness traverse method. Additionally, the metallographic method shall be used in part (See 3.3.1.4.1) to inspect produc
16、t. 3.3.1.1 In the case of dispute, the microhardness method, conducted in accordance with ASTM E 384, shall govern. The allowance for decarburization shall be that which would have been applicable had the step method been used (See 3.3.1.4.1). SAE INTERNATIONAL AMS5120M Page 3 of 5 3.3.1.2 Specimens
17、 Shall be full thickness of the product. Recommended minimum specimen size is 1 4 inch (25 102 mm). A full cross section metallographic sample shall be prepared to inspect for presence of complete decarburization (ferrite). 3.3.1.3 Procedure Specimens shall be hardened by austenitizing and quenching
18、; preferably, they shall not be tempered, but, if tempered, the tempering temperature shall be not higher than 300 F (149 C). During heat treatment, specimens shall be protected by suitable atmosphere or medium or by suitable plating to prevent carburization or further decarburization. 3.3.1.4 Prote
19、ctive plating, if used to prevent any decarburization during hardening, shall be removed, and a portion of the specimen shall be ground with copious coolant to prevent thermal or mechanical effects to a depth of 0.050 inch (1.27 mm) or one-half thickness, whichever is less. 3.3.1.4.1 Allowance The p
20、roduct shall show no layer of complete decarburization (ferrite) determined metallographically at a magnification not exceeding 100X. It shall also be free from any partial decarburization to the extent that the difference in hardness between the original surface and the surface (depth) generated by
21、 grinding as in 3.3.1.4 shall not be greater than two units on the HRA scale or equivalent (See 8.2). Also, refer to 3.3.1.1. 3.3.2 Bending Strip shall be tested in accordance with ASTM E 290 using a sample prepared nominally 0.75 inch (19.0 mm) in width with its axis of bending parallel to the dire
22、ction of rolling and shall withstand without cracking when bending at room temperature through the angle and bend radius shown in Table 2. If the bend cannot be performed with the axis parallel to the direction of rolling, bending shall be done with the axis perpendicular to the direction of rolling
23、 around a radius equal to one-half the nominal thickness of the strip. In case of dispute, the results of tests using the guided bend test of ASTM E 290 shall govern. TABLE 2 - BEND REQUIREMENTS Bend Angle Degrees Bend Radius t = nominal thickness 180 1t 3.4 Quality Strip, as received by purchaser,
24、shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the strip. 3.5 Tolerances Shall conform to AMS2232. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of strip shall supply all samples for vend
25、ors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the strip conforms to specified requirements. SAE INTERNATIONAL AMS5120M Page 4 of 5 4.2 Classification of Test
26、s All technical requirements of this specification are acceptance tests and shall be performed on each heat or lot as applicable. 4.3 Sampling Shall be in accordance with AMS2370. 4.4 Reports The vendor of strip shall furnish with each shipment a report showing the results of tests for composition o
27、f each heat and for hardness of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5120M, size, product form, and quantity. 4.5 Resampling and Retesting Shall be in accordance with AMS2370
28、. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2807. 5.2 Protective Treatment Strip shall be protected from corrosion prior to shipment. 5.3 Packaging Strip shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules
29、and regulations pertaining to the handling, packaging, and transportation of the strip to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A vendor shall include this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS St
30、rip not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (|) 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 p
31、revious issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.1.1 AMS5120M is an editoria
32、l correction necessary to correct publication errors in the L revision. In this instance, the change bar symbol(s) included herein are for the convenience of the user in locating areas where technical changes have been made to the J and L revisions of this specification. 8.2 Hardness conversion tabl
33、es for metals are presented in ASTM E 140. SAE INTERNATIONAL AMS5120M Page 5 of 5 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.5 Purchase documents should specify not less than the following: AMS5120M Size of strip desired Quantity of strip desired. PREPARED BY AMS COMMITTEE “E“
