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/AMS4312D AEROSPACE MATERIAL SPECIFICATION AMS4312 REV. D Issued 1977-01 Revised 2
5、008-07 Reaffirmed 2013-12 Superseding AMS4312C Aluminum Alloy, Rolled or Forged Rings 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-T651, 6061-T652) Solution Heat Treated, Mechanically Stress Relieved, and Precipitation Heat Treated (Composition similar to UNS A96061) RATIONALE AMS4312D has been reaffirmed
6、 to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of rolled or forged rings. 1.2 Application These rings have been used typically for structural applications requiring material with moderate strength and excellent resistance to
7、 stress-corrosion cracking and where good stability is required during machining, but usage is not limited to such applications. Alloy is further characterized by excellent fusion weldability. 1.3 Classification Rings covered by this specification are classified by type of mechanical stress relief a
8、s follows: Type 1 Stress relieved by stretching (6061T651) Type 2 Stress relieved by compression (6061T652) 1.3.1 Either type may be supplied, unless a specific type is ordered. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of t
9、his 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 of that document shal
10、l apply. SAE INTERNATIONAL AMS4312D Page 2 of 6 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. AMS2355 Quality Assurance Sampling and Testing of Aluminum A
11、lloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 6
12、10-832-9585, www.astm.org. ASTM B 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B 660 Packaging/Packing of Aluminum and Magnesium Products ASTM B 666/B 666M Identification Marking of Aluminum Products 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conf
13、orm to the percentages by weight shown in Table 1, determined in accordance with AMS2355. TABLE 1 - COMPOSITION Element min maxSilicon Iron Copper Manganese Magnesium Chromium Zinc Titanium Other Elements, each Other Elements, total Aluminum 0.40 - 0.15 - 0.8 0.04 - - - - remainder 0.8 0.7 0.400.151
14、.2 0.350.250.150.050.153.2 Condition Rings shall be supplied in the following condition; heat treatments shall be performed in accordance with AMS2772. 3.2.1 Type 1 Solution heat treated, stress relieved by stretching to produce a permanent set of 11/2 to 5%, and precipitation heat treated to the T6
15、51 temper. 3.2.2 Type 2 Solution heat treated, stress relieved by compression to produce a permanent set of 11/2 to 5%, and precipitation heat treated to the T652 temper. During compression, primary forces shall be applied in the axial direction and on individual rings approximating final dimensions
16、. SAE INTERNATIONAL AMS4312D Page 3 of 6 3.3 Properties Rings shall conform to the following requirements, determined in accordance with AMS2355 on the mill produced size. 3.3.1 Tensile Properties 3.3.1.1 Rings with OD to Wall Thickness Ratio Less than 10 Shall be as agreed upon by purchaser and ven
17、dor. 3.3.1.2 Rings with OD to Wall Thickness Ratio of 10 or Greater Shall be in accordance with Table 2. Tensile tests are not required in any direction from which a specimen at least 2.375 inches (60.32 mm) in length cannot be obtained. TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nomina
18、l Thickness at Time of Heat Treatment Inches (See 3.3.1.2.1) Specimen Orientation (See 3.3.1.2.2) Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 4D % Up to 4, incl Over 4 to 8, incl Tangential Axial Radial Tangential Axial Radial 38.0 38.0 37.0 37.0 37.0 35.0 35.0 35.0 33.0 34.
19、0 34.0 32.0 10 8 5 8 6 4 TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness at Time of Heat Treatment mm (See 3.3.1.2.1) Specimen Orientation (See 3.3.1.2.2) Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongationin 4D % Up to 102, incl Over 102 to 203, incl Tangential Axial
20、 Radial Tangential Axial Radial 262 262 255 255 255 241 241 241 228 234 234 221 10 8 5 8 6 4 3.3.1.2.1 Thickness shall be the smaller of the wall thickness (one-half the difference between nominal OD and nominal ID) and height (axial) dimensions. 3.3.1.2.2 Tangential requirements apply to specimens
21、machined with axis of specimen tangential to the ring OD (parallel to the direction of rolling). Axial requirements apply to specimens machined with axis of specimen parallel to the ring axis (long transverse to the direction of rolling). Radial requirements apply to specimens machined with axis of
22、specimen parallel to the radius of the ring (short transverse to the direction of rolling). All specimens shall be machined from the core of the ring. 3.3.1.2.3 Elongation requirements do not apply to test specimens having a gage-length diameter under 0.250 inch (6.35 mm), located in immediate proxi
23、mity to an abrupt change in section thickness, or located so that any part of the specimen gage length is located within 0.125 inch (3.18 mm) of the trimmed flash line. SAE INTERNATIONAL AMS4312D Page 4 of 6 3.3.2 Hardness Shall be not lower than 80 HB/10/500 or 85 HB/10/1000, but the rings shall no
24、t be rejected on the basis of hardness if the applicable tensile property requirements are met (See 4.3.3). 3.4 Quality Rings, 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 rings. 3.4.1 E
25、ach ring shall be ultrasonically inspected in accordance with ASTM B 594 and shall meet Class A acceptance limits of that publication. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of rings shall supply all samples for vendors tests and shall be responsible for the per
26、formance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the rings conform to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests All technical requirements are acceptance tests and except fo
27、r composition, shall be performed on each lot. 4.3 Sampling and Testing Shall be in accordance with AMS2355 and the following: A lot shall be all rings of the same size solution heat treated in the same batch furnace load or consecutively in a continuous furnace during an eight-hour period and preci
28、pitation heat treated as a unit. 4.3.1 Composition One or more samples shall be taken by the producer from each group of ingots poured simultaneously from the same source of molten metal. Complete ingot analysis records shall be available to purchaser at producers facility. 4.3.1.1 Unless compliance
29、 with 4.3.1 is established, an analysis shall be made for each 4000 pounds (1814 kg) or less of alloy comprising the lot except that not more than one analysis shall be required per piece. 4.3.2 Tensile Properties Except when testing in one or more directions is not required by 3.3.1, test specimens
30、 in the tangential, axial, and radial directions shall be taken from a ring, ring prolongation, or ring segment representing the lot. When ring segments are used for testing, the segments shall be cut from a ring after solution heat treatment and stress relief. Ring segments shall be included in eac
31、h precipitation heat treatment furnace load. 4.3.2.1 When requested by purchaser, not less than one-half of each ring segment obtained as in 4.3.2, or one-half of each prolongation tested, shall be submitted to purchaser with the rings represented. 4.3.3 Hardness Each ring. If hardness of any ring i
32、ndicates low tensile properties, the ring having the lowest hardness shall also be tested for tensile properties. SAE INTERNATIONAL AMS4312D Page 5 of 6 4.3.4 Quality Each ring. 4.4 Reports The vendor of the rings shall furnish with each shipment a report stating that the product conforms to the com
33、position, tolerances, and ultrasonic tests, and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements. This report shall include the purchase order number, inspection lot number(s), AMS4312D size, and quantity. The report sha
34、ll also identify the producer, the product form, and the size of the mill product. 4.5 Resampling and Retesting If any specimen used in the above tests fails to meet the specified requirements, disposition of the rings may be based on the results of testing two additional specimens for each original
35、 nonconforming specimen. Retest specimens shall be taken from as close as possible to the same location in the same ring or a second ring from the same lot as was the original unacceptable specimen. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the
36、 rings represented. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B 666/B 666M. 5.2 Packaging Rings shall be prepared for shipment in accordance with ATSM B 660, and in compliance with applicable rules and regulations pertaini
37、ng to the handling, packaging, and transportation of the rings 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 Rings not conforming to th
38、is specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 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 do
39、cument. 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. 8.2 Terms used in AMS are clarified in ARP1917. 8.3 D
40、imensions 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. SAE INTERNATIONAL AMS4312D Page 6 of 6 8.4 Purchase documents should specify not less than the following: AMS4312D Type of ring, when a specific type is required Size or part number of rings desired Quantity of rings desired. PREPARED BY AMS COMMITTEE “D“
