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/AMS4612J AEROSPACE MATERIAL SPECIFICATION AMS4612 REV. J Issued 1941-09 Revised 2
5、004-04 Reaffirmed 2012-02 Superseding AMS4612H Brass, Naval, Bars and Rods 60.5Cu - 38.5Zn - 0.75Sn Hard Temper (H04) (Composition similar to UNS C46400) RATIONALE AMS4612J has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE:1.1 Form: This specification covers a copper alloy
6、 (naval brass) in the form of bars and rods.1.2 Application: These products have been used typically for automatic screw machine parts, but usage is not limited to such applications. This material has slightly higher strength and lower ductility than AMS 4611. It also has better corrosion resistance
7、 than AMS 4610 but is less readily machinable.2. APPLICABLE DOCUMENTS: The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent supplied herein. The supplier may work to a subsequent revision of a document unless a specific doc
8、ument issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.AMS 2221 Toleranc
9、es, Copper and Copper Alloy Bars and RodsAMS 4610 Brass, Free-Cutting Bars and Rods, 61.5Cu - 35Zn - 3.1Pb, Half Hard (H02)AMS 4611 Brass, Naval, Bars and Rods, 60.5Cu - 38.7Zn - 0.8Sn, Half Hard (H02)Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or
10、networking permitted without license from IHS-,-,-SAE AMS4612J Page 2 of 6 2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959 or www.astm.org.ASTM B 154 Mercurous Nitrate Test for Copper and Copper AlloysASTM B 249 General Requirements
11、for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and ForgingsASTM B 249M General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings (Metric)ASTM B 858 Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in Copper AlloysASTM E 8 Tension Testi
12、ng of Metallic MaterialsASTM E 8M Tension Testing of Metallic Materials (Metric)ASTM E 478 Chemical Analysis of Copper Alloys3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E 478, by s
13、pectrochemical methods, or by other analytical methods acceptable to purchaser.3.1.1 These composition limits do not preclude the presence of other elements. Limits may be established and analysis required for unnamed elements by agreement between the manufacturer or supplier and purchaser.3.1.2 Zin
14、c may be reported as “remainder”, as the difference between the sum of results for all elements and 100%, or as the result of direct analysis.3.1.3 When all named elements in Table 1 are analyzed, the sum shall be 99.6 percent minimum, but such determination is not required for routine acceptance of
15、 each lot.TABLE 1 - CompositionElement (3.1.1) min maxCopper 59.0 62.0Tin 0.50 1.00Lead - 0.20Iron - 0.10Zinc (3.1.2) remainder -Sum of Named Elements (3.1.3) 99.6 -Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license
16、 from IHS-,-,-SAE AMS4612J Page 3 of 6 3.2 Condition: Cold finished, hard (H04) temper (See 8.3).3.3 Properties: The product shall conform to the following requirements:3.3.1 Tensile Properties: Shall be as shown in Table 2, determined in accordance with ASTM E 8 or ASTM E 8M.3.3.2 Embrittlement: Sp
17、ecimens as in 4.3.2 shall withstand, without cracking, the mercurous nitrate test performed in accordance with ASTM B 154, Procedure A, or the Ammonia Vapor Test in accordance with AMS B 858.3.4 Quality: The product, as received by purchaser, shall be uniform in quality and condition, sound, and fre
18、e from foreign materials and from imperfections detrimental to usage of the product.3.5 Tolerances: Shall conform to AMS 2221 as applicable to nonrefractory alloys.TABLE 2A - Minimum Tensile Properties, Inch/Pound UnitsNominal Diameter or DistanceBetween Parallel SidesInchesTensileStrengthksiYield S
19、trengthat 0.2% OffsetksiElongation in2 Inches or 4D%Up to 1.000, incl 67.0 45.0 13Over 1.000 to 2.500, incl 62.0 37.0 18Over 2.500 to 3.500, incl 54.0 25.0 27Over 3.500 54.0 22.0 30TABLE 2B - Minimum Tensile Properties, SI UnitsNominal Diameter or DistanceBetween Parallel SidesMillimetersTensileStre
20、ngthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm or 4D%Up to 25.40, incl 462 310 13Over 25.40 to 63.50, incl 427 255 18Over 63.50 to 88.90, incl 372 172 27Over 88.90 372 152 30Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking perm
21、itted without license from IHS-,-,-SAE AMS4612J Page 4 of 6 4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of the product shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sam
22、ple and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements.4.2 Classification of Tests: All technical requirements are acceptance tests and shall be performed on each lot.4.3 Sampling and Testing: Shall be in accordance with ASTM B 249
23、or ASTM B 249M and the following:4.3.1 The axis of tensile specimens shall be parallel to grain flow. For product 1.500 inches (38.10 mm) and under in nominal diameter or distance between parallel sides, the axis of specimens shall be located at the center of the product; for product over 1.500 inch
24、es (38.10 mm) in nominal diameter or distance between parallel sides, the axis of specimens shall be located midway between surface and center.4.3.2 Embrittlement: One sample from each lot, unless otherwise agreed upon by purchaser and vendor. Specimens for embrittlement test shall be full cross-sec
25、tion of the product and shall have length of approximately 6 inches (152 mm) or twice the diameter or least distance between parallel sides, whichever is greater.4.4 Reports: The vendor of the product shall furnish with each shipment a report showing the results of tests for chemical composition, te
26、nsile properties, and embrittlement and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, lot number, AMS 4612J, size, and quantity.4.5 Resampling and Retesting: If any specimen used in the above tests fails to meet specified
27、requirements, disposition of the product may be based on the results of testing two additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet specified requirements shall be cause for rejection of the product represented. Results of all tests shall be repo
28、rted.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS4612J Page 5 of 6 5. PREPARATION FOR DELIVERY: 5.1 Identification: Individual pieces or bundles shall have attached a durable tag legibly m
29、arked with not less than the purchase order number, lot number, AMS 4612J, and nominal size or shall be boxed and the box marked with the same information.5.2 Packaging: The product shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regu
30、lations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENT: A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONS: Product
31、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 previo
32、us issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only.Copyright SAE International Provided by IHS under lice
33、nse with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS4612J Page 6 of 6 8.2 Hardness should be as shown in Table 3, determined in accordance with ASTM E 18.Hardness has been used to verify that product is properly processed, but an “out-of-range” hardn
34、ess number is not always indicative of product with “out-of-specification” tensile strength. Further analysis including material composition verification, heat treat process parameter review, and/or tensile property measurement on product with “out-of-range” hardness may be necessary.8.3 Copper temp
35、er designations are defined in ASTM B 601.8.4 Terms used in AMS are clarified in ARP1917.8.5 Dimensions and properties in inch/pound units are primary; dimensions and properties in SI units are shown as the approximate equivalents of the primary units and are presented only for information.8.6 Purch
36、ase documents should specify not less than the following: AMS 4612JForm and size of product desiredQuantity of product desired.8.7 Similar Specifications: ASTM B 21, C 46400, hard temper, is listed for information only and shall not be construed as an acceptable alternate unless all requirements of
37、this AMS are met.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “D”TABLE 3 - HardnessNominal Diameteror Distance BetweenParallel SidesInchesNominal Diameteror Distance BetweenParallel SidesMillimetersRoundsHRBHexagonsOctagonsHRBUp to 1.000, incl Up to 25.40, incl 75 to 95 70 to 90Over 1.000 to 2.500, incl Over 25.40 to 63.50, incl 70 to 90 65 to 85Over 2.500 Over 63.50 70 to 90 60 to 80Note: Surface hardness except flats may be used for rounds.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
