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 2015 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/AMS7909C AEROSPACE MATERIAL SPECIFICATION AMS7909 REV. C Issued 2005-07 Revised 2
5、015-07 Superseding AMS7909B Aluminum Beryllium, NNS Preforms Hot Isostatic Pressed 38Al - 62Be RATIONALE AMS7909C results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers aluminum-beryllium powders consolidated by hot isostatic pressing (HIP) into
6、 the form of blocks, blanks or shapes. 1.2 Application These preforms have been used typically for parts requiring high thermal conductivity, low density and high modulus of elasticity, but usage is not limited to such applications. 1.3 Safety - Hazardous Materials While the materials, methods, appl
7、ications and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards that may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazar
8、dous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. 1.3.1 WARNING: Beryllium Alloy Inhaling dust or fumes containing beryllium may cause chronic beryllium disease, a serious chronic lung disease, in some individuals. Over time, lung
9、disease can be fatal. Read the product specific Safety Data Sheet (SDS) for additional environmental, health and safety information before working with beryllium or beryllium-containing materials. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase orde
10、r 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 of
11、 that document shall apply. SAE INTERNATIONAL AMS7909C Page 2 of 5 2.1 SAE Publications Available 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.sae.org. AMS2806 Identification, Bars, Wire Mec
12、hanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys. 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 B311 Density of Powder Me
13、tallurgy (P/M) Materials Containing Less Than Two Percent Porosity ASTM E8/E8M Tension Testing of Metallic Materials 2.3 ANSI Publications Available from American National Standards Institute, 25 West 43rd Street, 4th Floor, New York, NY 10036, Tel: 212-642-4900, www.ansi.org. ANSI B46.1 Surface Tex
14、ture, Surface Roughness, Waviness, and Lay 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1; beryllium shall be determined by wet analysis (titration) or optical emission spectrometry, oxygen by inert gas fusion, and other elements by spectrochemi
15、cal methods or by other analytical methods acceptable to purchaser. Table 1 - Composition Element min max Beryllium 60.0 64.0 Oxygen - 1.0 Carbon (3.1.2) - 0.1 Other Metallics, each (3.1.2) 0.2 Aluminum (3.1.1) remainder 3.1.1 Aluminum may be reported as “remainder”, or as the difference between the
16、 sum of results for all elements and 100%, or as the result of direct analysis. 3.1.2 Determination is not required for routine acceptance of each lot. 3.2 Condition Hot isostatically pressed (HIP) (See 8.2). 3.2.1 Surface Finish If no surface finish is specified, the material shall be furnished wit
17、h an as-sawed, as-HIP and/or machined surface. Machined surfaces shall have surface finish no greater than 110 Ra 125 microinches (3.2 um), determined in accordance with ANSI B46.1. SAE INTERNATIONAL AMS7909C Page 3 of 5 3.3 Properties The product shall conform to the following requirements. 3.3.1 T
18、ensile Properties Shall be as shown in Table 2, determined at room temperature in accordance with ASTM E8/E8M with the rate of strain set at 0.005 inch/inch/minute (0.005 mm/mm/minute) and maintained within a tolerance of 0.002 inch/inch/minute (0.002 mm/mm/minute) through the 0.2% offset yield stra
19、in and may be increased thereafter to 0.05 in/in/minute (0.05 mm/mm/minute (See also 8.5). Table 2 - Minimum tensile properties Property Value Tensile Strength 42.0 ksi (289 MPa) 0.2% Offset Yield Strength 28.0 ksi (193 MPa) Elongation in 4D 3% 3.3.2 Density Shall be within the range of 0.0748 to 0.
20、0767 pounds per cubic inch (2.071 to 2.122 g/cm3), determined using a water displacement method in accordance with ASTM B311 except that measurement shall be made on the product, not a sample (See also 8.4.1). 3.4 Quality Preforms, as received by purchaser, shall be uniform in quality and condition
21、and shall be free from imperfections detrimental to usage of the preforms. 3.5 Tolerances Shall conform to +0.250/-0.000 inch (+6.35/-0.00 mm) unless specified by agreement between purchaser and supplier (See 8.3). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the
22、 product shall supply all samples for producers tests and shall be responsible for performing all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to the requirements of this specification. 4.2 Classif
23、ication of the Tests All technical requirements are acceptance tests and shall be performed on each lot or each powder blend, as applicable. 4.3 Sampling and Testing Shall be in accordance with the following: a lot shall consist of all preforms manufactured from a specific powder blend and HIP cycle
24、. Mechanical properties may be determined from a sample shape (component) or from material produced as an integral part (prolongation) of a shape (component) from the lot. 4.3.1 Composition One or more samples from each powder blend. A powder blend is comprised of thoroughly intermingled powders of
25、the same nominal composition. SAE INTERNATIONAL AMS7909C Page 4 of 5 4.3.2 Tensile Properties One or more round tensile specimens from each lot at any location. 4.3.3 Density One sample from each lot (See 3.3.2), unless a sampling plan has been agreed upon by purchaser and producer. 4.3.4 Dimensions
26、 Each piece, unless a sampling plan has been agreed upon by purchaser and producer. 4.4 Reports The producer of the product shall furnish with each shipment a report showing the results of tests for composition, tensile properties and density of each lot. This report shall include the purchase order
27、 number, lot number, AMS7909C, serial numbers, and quantity. 4.5 Resampling and Retesting If a valid test on any specimen used in the above tests fails to meet the specified requirements, disposition of the product may be based on the results of testing two additional specimens for each original non
28、conforming specimen, except as permitted by 4.5.1. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the product represented. Results of all tests shall be reported. 4.5.1 Resubmittal of Rejected Lots Lots rejected for failure to meet the technical req
29、uirements may be submitted for retesting provided the producer has reworked the lots, as necessary, to correct the deficiencies or when 100% inspection confirms removal of nonconforming details. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2806. 5.2 Packaging The pro
30、duct 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 carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A producer shall include this
31、specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATIONAL AMS7909C Page 5 of 5 8. NOTES 8.1 A change bar (l) located in the le
32、ft 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, including technical revisions. Change
33、 bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Typical HIP parameters are: 1148 F 18 (620 C 10), 15 ksi (103 MPa), 3 hours. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound units and the Fahren
34、heit 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. 8.4.1 Density values are commonly presented in grams per cubic centimeter. 8.5 Subsequent exposure t
35、o elevated temperature above 950 F (510 C), for example secondary operations such as thermal stress relief, brazing or welding, may alter tensile properties. 8.6 Purchase documents should specify not less than the following: AMS7909C Product form and size of product desired Quantity of product desired Surface finish requirements, if applicable (See 3.2.1). PREPARED BY AMS COMMITTEE “G”
