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 2011 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/AMSA81596 AEROSPACE MATERIAL SPECIFICATION AMS-A-81596 Issued 1998-07 Reaffirmed
5、2011-11 Aluminum Foil for Sandwich Construction RATIONALE This document has been reaffirmed to comply with the SAE five-year review policy. NOTICEThis document has been taken directly from U.S. Military Specification MIL-A-81596A and contains only minor editorial and format changes required to bring
6、 it into conformance with the publishing requirements of SAE technical standards. The initial release of this document is intended to replace MIL-A-81596A. Any part numbers established by the original specification remain unchanged.The original Military Specification was adopted as an SAE standard u
7、nder the provisions of the SAE Technical Standards Board (TSB) Rules and Regulations (TSB 001) pertaining to accelerated adoption of government specifications and standards. TSB rules provide for (a) the publication of portions of unrevised government specifications and standards without consensus v
8、oting at the SAE Committee level, and (b) the use of the existing government specification or standard format.Under Department of Defense policies and procedures, any qualification requirements and associated qualified products lists are mandatory for DOD contracts. Any requirement relating to quali
9、fied products lists (QPLs) has not been adopted by SAE and is not part of this technical report.SAE AMS-A-81596 Page 2 of 11 1. SCOPE:1.1 Scope: This specification covers the requirements of uncoated aluminum alloy foil for core materials required for structural sandwich construction.1.2 Classificat
10、ion: Aluminum foil material for sandwich construction shall be furnished in the following alloys and tempers, as specified (see 6.2.1):2. APPLICABLE DOCUMENTS: The following publications, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification
11、 to the extent specified herein.2.1 U.S. Government Publications: Available from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.MIL-H-6088 Heat Treatment of Aluminum AlloysMIL-STD-649 Aluminum and Magnesium Products, Preparation for Shipment and Stor
12、ageL-T-80 Tape, Pressure-Sensitive Adhesive (Aluminum Backed)FED-STD-151 Metals; Test MethodsFED-STD-184 Identification Marking of Aluminum, Magnesium and TitaniumAluminum alloy Temper Description2024 T 3 Solution heat-treated and then cold worked.T 81 Solution heat-treated, cold worked, andthen art
13、ificially aged.3003 H 19 Strain hardened, extra hard temper.5052 H 191 Strain hardened, extra hard temper variation.5056 H 191 Strain hardened, extra hard temper variation.SAE AMS-A-81596 Page 3 of 11 2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor, West Conshohocken, PA 19428-2959.ASTM
14、E 252 Thickness of Thin Foil and Film by WeighingASTM E 345 Tension Testing of Metallic Foil3. REQUIREMENTS: 3.1 Chemical composition: Aluminum foil shall be produced from material conforming to the requirements specified in Table I.3.2 Mechanical properties: The mechanical properties, perpendicular
15、 to the direction of final rolling (long transverse direction) for Alloy 2024 and parallel to the direction of final rolling (longitudinal direction) for Alloys 3003, 5052, and 5056, shall conform to the requirements of Table II for the alloy and temper specified. Mechanical properties of alloys and
16、 tempers not covered by this specification shall be as specified in the contract or order (see 6.2.1).3.3 Thickness: Unless otherwise specified, aluminum foil shall be furnished in the thicknesses as shown in Table III, as specified in the contract or purchase order (see 6.2.1). The thickness of the
17、 aluminum foil shall not vary from the specified thickness by more than permitted variations shown in Table III. Unless otherwise specified in the contract or purchase order, for thicknesses of foil not covered herein, the thickness shall not deviate from that specified by more than 10 percent of th
18、at specified for Alloy 2024 or by more than 5 percent of that specified for the other alloys.3.4 Dimensional tolerances: Unless otherwise specified, the aluminum foil shall be furnished in coils. The weight of the coils shall be as specified in the contract or purchase order (see 6.2.1). The width o
19、f the foil shall be as specified in the contract or purchase order (see 6.2.1). The width of the foil shall be within 1/32 inch of that specified. Unless otherwise specified, the coil diameter shall not exceed 34 inches (see 6.2.1).3.5 Splices: The maximum number of allowable splices per roll of alu
20、minum foil shall be one for each 1,300 lineal feet or fraction thereof for Alloy 2024, and one for each 3,000 lineal feet or fraction thereof of foils in other alloys regardless of nominal foil thickness. Unless otherwise specified, the splices shall be made with pressure-sensitive tape conforming t
21、o L-T-80 or by ultrasonic welding. The type of splice shall be at the suppliers option in accordance with his current mill practices as long as there are no loose foil edges in the foil roll unwind direction. Splices shall be marked with a colored tape, or equivalent, that shall extend over each edg
22、e of the roll so that the matching tape may be easily seen at the edges of the roll.SAE AMS-A-81596 Page 4 of 11 3.6 Marking for identification: Unless otherwise specified, the foil shall be marked in accordance with FED-STD-184.3.7 Heat treatment: The heat treating required for aluminum Alloy 2024
23、foil shall be performed in accordance with the applicable procedures in MIL-H-6088.3.8 Workmanship: The foil shall be uniform in quality and condition; clean, sound, smooth, commercially flat, and free from buckles, blisters, seams, laminations, wrinkles, excessive bow, mill holes, and other injurio
24、us defects, both internal and external, that will be detrimental to fabrication of structural core material. Oil on the foil surface in amounts which would prevent the application of adhesive and attainment of a bond shall not be acceptable. Discoloration due to thermal treatment shall not be cause
25、for rejection.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for inspection: Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purch
26、ase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspecti
27、ons are deemed necessary to assure supplies and services conform to prescribed requirements.4.2 Lot: Unless otherwise specified in the contract or purchase order, a lot shall consist of all foil of the same heat, alloy, temper, and nominal thickness processed together. For the coiled foil, prior to
28、shearing to cut length or slitting into multiple coils, a lot shall have a maximum weight of 40,000 pounds.4.3 Sampling: Unless otherwise specified and where applicable, the supplier shall use a system of statistical quality control approved by the acquiring activity for sampling plans and procedure
29、s in the determination of the acceptability of the products.SAE AMS-A-81596 Page 5 of 11 4.3.1 Quality conformance samples: 4.3.1.1 For visual examination and dimensional tolerances: Samples for visual examination and dimensional tolerances shall be selected from each coil in accordance with the sup
30、pliers system of statistical quality control (see 4.3). Unless in conflict with the suppliers system, the sample footage shall consist of equal lengths of strips taken from the head and tail of each coil prior to shearing to length or slitting into multiple coils.4.3.1.2 For chemical analysis: 4.3.1
31、.2.1 Ingot sampling: At least one sample shall be taken from each group of ingots of the same alloy poured simultaneously from the same source of molten metal of the test of 4.5.1. Complete ingot analysis records shall be available to the acquiring activity.4.3.1.2.2 Finished product sampling: When
32、sampling has not been made in accordance with 4.3.1.2.1 or compliance with 4.3.1.2.1 can not be established, a random sample for each 2,000 pounds, or fraction thereof, of material of each alloy in the lot shall be selected for test of 4.5.1.4.3.1.3 For mechanical tests: At least two samples from ea
33、ch end of the coil for specimens for each 2,000 pounds, or fraction thereof, shall be taken in accordance with 4.3.2 to represent a lot, but not more than two samples shall be taken from each end of a mill coil even though slit into narrower coils or cut into shorter coils, provided that further pro
34、duction does not change the temper.4.3.2 Quality conformance specimen preparation: 4.3.2.1 Chemical analysis preparation: Samples for chemical analysis shall be prepared as described in Method 111 or Method 112 of FED-STD-151.4.3.2.1.1 Chemical analysis: A composite sample of at least 75 grams of fo
35、il, chips, or drillings shall be obtained by cutting, drilling, or machining the sample of 4.3.2.1 in accordance with Method III ofFED-STD-151. Chips or drillings shall be cleaned with a magnet.4.3.2.1.2 Spectrochemical analysis: A piece of metal weighing not less than 60 grams shall be taken from e
36、ach sample of 4.3.2.1. Specimens for spectrochemical analysis shall be prepared in accordance with Method 112 of FED-STD-151.4.3.2.2 Specimens for mechanical tests: For the non-heat-treatable alloys 3003, 5052, and 5056, tension test specimens shall be prepared in such a manner that the longitudinal
37、 axis is parallel to the direction of rolling or maximum flow of the metal in the coil. For the heat-treatable alloy 2024, tension test specimens shall be prepared in such a manner that the longitudinal axis is at an angle of 90 degrees to the direction of rolling or maximum flow of the metal in the
38、 coil. The tension test specimens for foil shall be machined (see 4.3.2.2.1) or they shall be sheared (see 4.3.2.2.2). Either type of prepared specimen shall be examined under 20X magnification to determine that the edges are smooth and that there are no surface irregularities.SAE AMS-A-81596 Page 6
39、 of 11 4.3.2.2.1 Machined specimen: Tensile test specimens for foil shall be machined to the form and dimensions of Type A specimens as detailed in ASTM E 345. The specimens shall be machined in packs by use of a milling type cutter which should be kept very sharp and should be renewed when necessar
40、y. For satisfactory results, a film of polyester terephthalate or similar material should be interleaved between foil thicknesses when machining them.4.3.2.2.2 Sheared specimens: Tensile test specimens for foil shall be individually prepared by shearing to the form and dimensions of Type B specimens
41、 as detailed in ASTM E 345.4.3.2.3 Specimens for thickness: Specimens for thickness shall be prepared for determining thickness either by instrument measurement or by weighing of the foil.4.3.2.3.1 Instrument measurement specimens: Specimens of foil for instrument measurement of thickness shall be c
42、ut or sheared to form a strip approximately 2 inches wide by the width of the foil.4.3.2.3.2 Weighing measurement specimens: Specimens individually prepared in accordance with 4.3.2.2.2 may be used for thickness specimens. Specimens may also be cut from the foil by a precision blanking press in the
43、form of circles that are 8.000 0.008 square inches in area as detailed in ASTM E 252. At the option of the supplier, other size specimens may be used provided consideration is given to factors affecting the results, that the area of the specimen shall be known and controlled to an accuracy of 0.1 pe
44、rcent, and the minimum weight of the specimen shall be 0.070 grams.4.4 Quality conformance examination: 4.4.1 Products: Each coil or samples of foil selected in accordance with 4.3.1.1 shall be visually examined for conformance to the requirements of form (see 3.4), splicing (see 3.5), marking for i
45、dentification (see 3.6), and workmanship (see 3.8), and measured for compliance with width and coil diameter (see 3.4). Unless any defective portions of the coil, which fail to conform to the above requirements, can be removed and respliced, the lot represented by the coil shall be rejected.4.5 Qual
46、ity conformance tests: 4.5.1 Chemical analysis: Each sample selected in accordance with 4.3.1.2 and prepared in accordance with 4.3.2.1 shall be tested in accordance with Method 111 or Method 112 of FED-STD-151 to determine conformance to the chemical requirements of Table I. In case of dispute, the
47、 chemical analysis by wet chemical methods shall be the basis for acceptance. If the sample fails to conform to the requirements of Table I, the lot shall be rejected.4.5.2 Mechanical properties: 4.5.2.1 Tensile strength: Specimens for tension test, prepared in accordance with 4.3.2.2.1 or 4.3.2.2.2
48、 shall be tested for tensile strength in accordance with ASTM E 345 to determine conformance to the requirements of Table II. If the specimens fail to conform to the requirements of Table II, the lot shall be rejected.SAE AMS-A-81596 Page 7 of 11 4.5.2.2 Yield strength: The yield strength of the ten
49、sion test specimens shall be tested as detailed in ASTM E 345 to determine conformance to the requirements of Table II. If the specimens fail to conform to these requirements, the lot shall be rejected.4.5.3 Thickness of foil: 4.5.3.1 Instrument measurement: Specimens for the thickness test, prepared in accordance with 4.3.2.3.1, shall be tested to determine conformance to the requirements of 3.3 by obtaining readings at 5 locati
