1、AEROSPACE MATERIAL SPECIFICATIONAMS7911 REV. DIssued 1995-04Revised 2015-01Superseding AMS7911CAluminum Beryllium, PreformsHot Isostatic Pressed and Heat Treated38Al - 62BeRATIONALEAMS7911D results from a Five Year Review and update of this specification.1. SCOPE1.1 FormThis specification covers alu
2、minum-beryllium powders consolidated by hot isostatic pressing (HIP) into the form of bar, rod, tubing, and shapes.1.2 ApplicationThese 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 applic
3、ations.1.3 Safety - Hazardous MaterialsWhile the materials, methods, applications 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
4、 the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.1.3.1 WARNINGInhaling dust or fumes containing beryllium may cause chronic beryllium disease, a serious chron
5、ic lung disease, in some individuals. Over time, lung 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 DOCUMENTSThe issue of the following
6、 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 cancelled and no superseding doc
7、ument has been specified, the last published issue of that document shall apply._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 suit
8、ability for any particular use, including any patent infringement arising therefrom, 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 sugges
9、tions.Copyright 2015 SAE InternationalAll rights reserved. No part of this publication 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 DO
10、CUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)Tel: +1 724-776-4970 (outside 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/AMS7911DSAE I
11、NTERNATIONAL AMS7911D Page 2 of 52.1 SAE PublicationsAvailable 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.AMS2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon
12、 and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys2.2 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 B311 Density Determination for Powder Metallurgy (P/M) Materials Co
13、ntaining Less Than Two Percent PorosityASTM E8 / E8M Tension Testing of Metallic Materials2.3 ANSI PublicationsAvailable 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 Texture, Surface Roughness, Wavi
14、ness, and Lay3. TECHNICAL REQUIREMENTS3.1 CompositionShall 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 spectrochemical methods or by other analytic
15、al methods acceptable to purchaser.Table 1 - CompositionElement min maxBeryllium 60.0 64.0Oxygen 1.0Carbon (3.1.2) 0.1Other Metallics, each (3.1.2) 0.2Aluminum (3.1.1) remainder3.1.1 Aluminum may be reported as “remainder”, or as the difference between the sum of results for all elements and 100%, o
16、r as the result of direct analysis.3.1.2 Determination is not required for routine acceptance of each lot.3.2 ConditionHot isostatically pressed (HIP) with subsequent heat treatment (See 8.2).3.2.1 Surface FinishIf no surface finish is specified, the material shall be furnished with an as-sawed, as
17、HIP, and/or machined surface. Machined surfaces shall have surface finish no greater than 110 Ra 125 microinches (3.2 m), determined in accordance with ANSI B46.1.SAE INTERNATIONAL AMS7911D Page 3 of 53.3 PropertiesThe product shall conform to the following requirements.3.3.1 Tensile PropertiesShall
18、 be as shown in Table 2, determined at room temperature in accordance with ASTM E8 / E8M with the rate of strainset 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 strain and may be increase
19、d thereafter to 0.05 inch/inch/minute (0.05 mm/mm/minute).Table 2 - Minimum tensile propertiesProperty ValueTensile Strength 38.0 ksi (262 MPa)0.2% Offset Yield Strength 28.0 ksi (193 MPa)Elongation in 4D 2%3.3.2 DensityShall be within the range of 0.0748 to 0.0767 pounds per cubic inch (2.071 to 2.
20、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, after HIP and heat treatment. 3.4 QualityPreforms, as received by purchaser, shall be uniform in quality and condition and shall be free from impe
21、rfections detrimental to usage of the preforms.3.5 TolerancesShall 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 PROVISIONS4.1 Responsibility for InspectionThe producer of the product shall supply all sample
22、s 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 Classification of the TestsAll technical
23、 requirements are acceptance tests and shall be performed on each lot or each powder blend, as applicable.4.3 Sampling and TestingShall be in accordance with the following: a lot shall consist of all preforms manufactured from a specific powder blend and HIP cycle and heat treatment batch. Mechanica
24、l 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 CompositionOne or more samples from each powder blend. A powder blend is comprised of thoroughly intermingled powders of the same nomi
25、nal composition.SAE INTERNATIONAL AMS7911D Page 4 of 54.3.2 Tensile PropertiesOne or more round tensile specimens from each lot at any location.4.3.3 DensityOne sample from each lot (See 3.3.2), unless a sampling plan has been agreed upon by purchaser and producer.4.3.4 DimensionsEach piece, unless
26、a sampling plan has been agreed upon by purchaser and producer.4.4 ReportsThe 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 number, lot number,
27、AMS7911D, serial numbers, and quantity.4.5 Resampling and RetestingIf 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 nonconforming specimen, ex
28、cept 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 LotsLots rejected for failure to meet the technical requirements may be submitte
29、d 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 DELIVERY5.1 IdentificationShall be in accordance with AMS2806.5.2 PackagingThe product shall be prepared for shi
30、pment 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. ACKNOWLEDGMENTA producer shall include this specification number and its rev
31、ision letter in all quotations and when acknowledging purchase orders.7. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.SAE INTERNATIONAL AMS7911D Page 5 of 58. NOTES8.1 A change bar (|) located in the left margin is
32、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 bars and (R)
33、 are not used in original publications, nor in documents that contain editorial changes only.8.2 Typical HIP parameters are:1148 F r 18 (620 C r 10), 15 ksi (103 MPa), 3 hours.8.2.1 Typical heat treatment parameters are 1100 F r 45 (593 C r 25) for 24 hours. 8.3 Drawings will be interpreted in accor
34、dance with ANSI Y14.5M, Dimensioning and Tolerancing.8.4 Terms used in AMS are clarified in ARP1917.8.5 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 equivalen
35、ts of the primary units and are presented only for information.8.5.1 Density values are commonly presented in grams per cubic centimeter.8.6 Purchase documents should specify not less than the following:AMS7911DProduct form and size of product desiredQuantity of product desiredSurface finish requirements, if applicable (See 3.2.1).PREPARED BY AMS COMMITTEE “G”
