1、AEROSPACE MATERIAL SPECIFICATION AMS7912 REV. D Issued 1996-05 Revised 2015-01 Superseding AMS7912C Aluminum-Beryllium Alloy, Extrusions 38Al - 62Be Annealed RATIONALE AMS7912D results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum-b
2、eryllium alloy in the form of bars, rods, tubing, and shapes consolidated from powder by extrusion. 1.2 Application These extrusions 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
3、 Safety-Hazardous Materials While 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 the user
4、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 WARNING Inhaling dust or fumes containing beryllium may cause chronic beryllium disease, a serious chronic lung
5、disease, in some individuals. Over time, lung disease can be fatal. Read the product specific Material Safety Data Sheet (MSDS) for additional environmental, health and safety information before working with beryllium or beryllium-containing materials. 2. APPLICABLE DOCUMENTS The issue of the follow
6、ing 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
7、document 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
8、 suitability 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
9、suggestions. Copyright 2015 SAE International All 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 P
10、LACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (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/standar
11、ds/AMS7912D SAE INTERNATIONAL AMS7912D 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 724-776-4970 (outside USA, www.sae.org. AMS2806 Identification, Bars, Wire, Mechanical Tubing, and
12、 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 Determination for Powder Metallu
13、rgy (P/M) Materials Containing Less Than Two Percent Porosity ASTM E8 / E8M Tension Testing of Metallic Materials 2.3 ASME Publications Available from ASME, P.O. Box 2900, 22 Law Drive, Fairfield, NJ 07007-2900, Tel: 800-843-2763 (U.S./Canada), 001-800-843-2763 (Mexico), 973-882-1170 (outside North
14、America), www.asme.org. ASME Y14.5M Dimensioning and Tolerancing 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 spectroscopy, oxygen by inert gas fusion, and other el
15、ements by spectrochemical methods or other analytical methods acceptable to purchaser. Table 1 - Composition Element min max Aluminum (3.1.1) Beryllium Oxygen Carbon Other Elements, each (3.1.2) - 60.0 - - - - 64.0 1.0 0.1 0.2 3.1.1 Aluminum reported as balance. 3.1.2 Determination is not required f
16、or routine analysis. 3.2 Condition As extruded and annealed. 3.3 Heat Treatment Product shall be annealed by heating to 1100 F 45 (593 C 25), holding at heat for 24 hours 2, and cooling to room temperature. 3.4 Properties The product shall conform to the following requirements: SAE INTERNATIONAL AMS
17、7912D Page 3 of 5 3.4.1 Tensile Properties Shall be as shown in Table 2, determined 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 yie
18、ld strain and may be increased thereafter to 0.05 inch/inch/minute (0.05 mm/mm/minute). Table 2 - Minimum tensile properties Property Value Longitudinal Value Transverse Tensile Strength Yield Strength, 0.2% Offset Elongation in in 4D 58 ksi (400 MPa) 40.0 ksi (276 MPa) 7% 50 ksi (345 MPa) 40.0 ksi
19、(276 MPa) 2% 3.4.1.1 Transverse properties apply only to product from which specimens not less than 2.50 inches (63.5 mm) in length can be obtained. 3.4.2 Density Shall be within the range of 0.0748 to 0.0767 pounds per cubic inch (2.071 to 2.122 g/cm3), determined using a water displacement method
20、in accordance with ASTM B311. 3.5 Quality Extrusions, as received by purchaser, shall be uniform in quality and condition and free from imperfections detrimental to usage. 3.6 Tolerances Shall conform to the following in accordance with ASME Y14.5M: 3.6.1 Diameter, Width, or Thickness Shall be as sh
21、own in Table 3. Table 3A - Dimensional tolerances, inch/pound units Diameter, Width, or Thickness Inches Tolerance Inch Plus Only 0.150 to 3, incl Over 3 0.125 0.250 Table 3B - Dimensional tolerances, SI units Diameter, Width, or Thickness Millimeters Tolerance Millimeters Plus Only 3.81 to 76.2, in
22、cl Over 76.2 3.18 6.35 3.6.2 Length Shall be as shown in Table 4. SAE INTERNATIONAL AMS7912D Page 4 of 5 Table 4A - Dimensional tolerances, inch/pound units Length, Inches Tolerance Inch Plus Only Up to 20, incl Over 20 0.125 0.250 Table 4B - Dimensional tolerances, SI units Length, Millimeters Tole
23、rance Millimeters Plus Only Up to 508, incl Over 508 3.18 6.35 3.6.3 Straightness Straightness of extruded bar shall be 0.125 inch per foot (10.42 mm/m). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the product shall supply all samples for producers tests and sha
24、ll be responsible 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 Tests All technical requirements are acceptance tests and
25、shall be performed on each powder blend or lot as applicable. 4.3 Sampling and Testing Shall be in accordance with the following; a lot shall be all extrusions fabricated from the same powder blend and each combination of extrusion session, reduction ratio, and annealing heat treatment. 4.3.1 Compos
26、ition One or more samples from each powder blend (See 8.2.1). 4.3.2 Tensile Properties One or more round tensile specimens from each lot at any location. 4.3.3 Density One specimen from each lot (See 3.4.2). 4.3.4 Tolerances Each extrusion (See 8.2), unless a sampling plan has been agreed upon by pu
27、rchaser and producer. 4.4 Reports The producer of the product shall furnish with each shipment a report showing the results of tests for composition of each powder blend and for tensile properties and density of each lot. This report shall include the purchase order number, powder blend number, AMS7
28、912D, serial numbers, and quantity. SAE INTERNATIONAL AMS7912D Page 5 of 5 4.5 Resampling and Retesting If a valid test on any specimen used in the above tests fails to meet specified requirements, disposition of the product may be based on the results of testing two additional specimens for each or
29、iginal nonconforming specimen, except as permitted by 4.5.1. Failure of any retest specimen to meet 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 technical r
30、equirements 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 In accordance with AMS2806. 5.2 Packaging The product sh
31、all 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 specifi
32、cation number and its revision letter 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. 8. NOTES 8.1 A change bar (l) located in the left margin is for the c
33、onvenience 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) are not
34、used in original publications, nor in documents that contain editorial changes only. 8.2 Terms used in AMS are clarified in ARP1917 and as follows: 8.2.1 A powder blend is comprised of thoroughly intermingled powders of the same nominal composition. 8.3 Dimensions and properties in inch/pound units
35、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. 8.4 Purchase documents should specify not less than the following: AMS7912D Product form and size of product desired Quantity of product desired. PREPARED BY AMS COMMITTEE “G”
