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 theref
2、rom, 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 2015 SAE InternationalAll rights reserved. No part of this publi
3、cation 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: +1 724-776-4970 (out
4、side USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS7719EAEROSPACEMATERIAL SPECIFICATIONAMS7719 REV. EIssued 1961-01Reaffirmed 2011-04Revised
5、2015-08Superseding AMS7719DNickel-Iron Alloy, Magnetic, Sheet and Strip50Ni - 50FeStamping Quality, Half-Hard Temper(Composition similar to UNS K95000)RATIONALEAMS7719E results from a Five Year Review and update of this specification.1. SCOPE1.1 FormThis specification covers a magnetic nickel-iron a
6、lloy in the form of sheet and strip.1.2 ApplicationThese products have been used typically for magnetic circuit parts that require high magnetic permeability at low flux densities with the fabricated parts to be annealed in dry hydrogen, but usage is not limited to such applications.2. APPLICABLE DO
7、CUMENTSThe issue of the following documents in effect on the date of the purchase order 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
8、 cancelled and no superseding document has been specified, the last published issue of that document shall apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sa
9、e.org.AMS2242 Tolerances, Corrosion and Heat Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Sheet, Strip, and PlateAMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging StockAMS2807 Identification, Carbon and Low-Alloy
10、 Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft TubingSAE INTERNATIONAL AMS7719E Page 2 of 52.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM
11、A596/A596M Direct-Current Magnetic Properties of Materials Using the Ballistic Method and SpecimensASTM A773/A773M D-C Magnetic Properties of Materials Using Ring and Permeameter Procedures with dc Electronic Hysteresigraphs.ASTM E18 Rockwell Hardness of Metallic Materials3. TECHNICAL REQUIREMENTS3.
12、1 CompositionShall be an alloy containing approximately 50% nickel and 50% iron with other alloying elements in such proportions as required to provide a product meeting the requirements of 3.3.3.2 ConditionCold rolled to half-hard temper having a surface appearance comparable to the following comme
13、rcial corrosion-resistant steel finishes as applicable (See 8.2).3.2.1 SheetNo. 2D finish.3.2.2 StripNo. 1 strip finish.3.3 PropertiesThe product shall conform to the following requirements:3.3.1 Hardness Shall be not lower than 90 HRB, or equivalent (See 8.3), determined in accordance with ASTM E18
14、.3.3.2 Magnetic PropertiesShall be as shown in Table 1, determined in accordance with ASTM A596/A596M or ASTM A773/A773M on specimens as in 4.3.1, annealed by heating to 2150 F 25 (1177 C 14) in a dry hydrogen atmosphere having a dew point of-60 F (-51 C) or lower, holding at heat for 4 hours 0.25,
15、and cooling in a non-contaminating atmosphere at a rate not greater than 100 F (56 C) degrees per hour to 1100 F (593 C) or lower, unless another cooling rate is recommended by the alloy producer (See 8.4).SAE INTERNATIONAL AMS7719E Page 3 of 53.3.2.1 Maximum PermeabilityShall be as shown in Table 1
16、.Table 1 - Maximum permeabilityNominal ThicknessInchNominal ThicknessMillimeterMinimumValueUp to 0.020, excl0.020 and overUp to 0.51, excl0.51 and over60 00040 0003.3.2.2 Permeability at 100 Gauss (0.01T)Shall be as shown in Table 2.Table 2 - Permeability at 100 gaussNominal ThicknessInchNominal Thi
17、cknessMillimeterMinimumValueUp to 0.020, excl0.020 and overUp to 0.51, excl0.51 and over800060003.3.2.3 Induction at 100 Oersteds (7958 A/m)Shall be not less than 15 000 gauss (1.5T).3.4 QualityThe product, as received by purchaser, shall be uniform in quality and condition, sound, and free from for
18、eign materials and from imperfections detrimental to usage of the product.3.5 TolerancesShall conform to all applicable requirements of AMS2242.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe producer of the product shall supply all samples for producers tests and shall be respon
19、sible 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 product conforms to specified requirements.4.2 Classification of TestsAll technical requirements are acceptance tests and shall be perfo
20、rmed on each heat or lot as applicable.SAE INTERNATIONAL AMS7719E Page 4 of 54.3 Sampling and TestingShall be in accordance with AMS2371 and the following:4.3.1 For magnetic property tests, one or more samples shall be selected at random from each lot.4.4 ReportsThe producer of the product shall fur
21、nish with each shipment a report showing the producer identity, the results of tests for hardness and for magnetic properties 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, AMS7719E, co
22、oling rate if other than 100 F (56 C) degrees per hour, and test method used for determining magnetic properties and size, and quantity.4.5 Resampling and RetestingShall be in accordance with AMS2371.5. PREPARATION FOR DELIVERY5.1 IdentificationShall be in accordance with AMS2807.5.2 Protective Trea
23、tmentProduct shall be protected from corrosion prior to shipment.5.3 PackagingThe product shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure c
24、arrier acceptance and safe delivery.6. ACKNOWLEDGMENTA producer shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, will be sub
25、ject to rejection.8. NOTES8.1 A 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
26、 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.8.2 Commercial corrosion-resistant steel finishes are defined in ASTM A480/A480M and AS4194.8.3 Hardness conversion tables for met
27、als are presented in ASTM E140.8.4 Annealing of fabricated parts is required to produce the required properties. Dry hydrogen atmosphere is typically recommended. Vacuum or other protective atmospheres may produce magnetic properties that are not equivalent to those produced by hydrogen.SAE INTERNAT
28、IONAL AMS7719E Page 5 of 58.5 Terms used in AMS are clarified in ARP1917.8.6 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.8.7 Purchase documents should specify not less than the following:AMS7719EForm and size of product desiredQuantity of product desired.PREPARED BY AMS COMMITTEE “E”
