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 theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2010 SAE International All rights reserved. No part of this publication ma
3、y 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: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMSS83474AAEROSPACEMATERIALSPECIFICATIONAMS-S-83474 REV. A Issued 1998-07 Revised 2010-09 Super
5、seding AMS-S-83474 Shims, Molded, Filled Resin Compound and Sheet Prepeg RATIONALEThis document was taken from a MIL SPEC that was written in 1970, updating information and new product types is required.1. SCOPE 1.1 Scope This specification covers the requirements for filled, resinous thermosetting
6、compound and sheet pre-preg to fabricate shims for use during assembly of aircraft and marine components and parts.1.2 Classification The material shall be classified in the three types as specified:Type I - A two component material (base and hardener) which, after mixing and application of heat (35
7、0 F), will cure to a hard, strong resin. Type I material may also be cured in ambient temperature of 75 F 5 for a period of 96 hours minimum. Type I Class A - A two component material (base and hardener) which after mixing may be cured to a hard, strong resin in ambient temperature of 75 F 5 for a p
8、eriod of 9 hours. Type II - A precatalyzed (B-staged) sheet material which will cure to a hard, strong resin with the application of heat. Type II material may also be cured in ambient temperature of 75 F 5 for a period of 96 hours. Type III - A precatalyzed (B-staged) material supplied frozen in a
9、tube from which it can be extruded and cured to a hard strong resin with the application of heat (200 F). Type III material may also be cured in ambient temperature of 75 F 5 for a period of 96 hours minimum.2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the pu
10、rchase 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 document has been specified, the last publish
11、ed issue of that document shall apply. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS-S-83474A Page 2 of 122.1 U.S. Government Publications Available from the Document Automation and Product
12、ion Service (DAPS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/assist.daps.dla.mil/quicksearch/.MIL-Y-1140 Yarn, Cord, Sleeving, Cloth and Tape Glass MIL-DTL-5624 Turbine Fuel, Aviation, Grades JP-4 and JP-5 MIL-T-81533 Trichloroethane 1,1,1 (Methyl Chlor
13、oform Inhibited, Vapor Degreasing A-A-55828 Sulfuric Acid, Technical A-A-59123 Sodium Dichromate, Dihydrate, Technical MMM-A-132 Adhesive, Heat Resistant, Airframe Structural, Metal to Metal 2.2 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel
14、: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS3167B Solvents, Wipe for Cleaning Prior to Application of Primer and Top Coat Materials, or Sealing Compounds2.3 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Consho
15、hocken, PA 19428-2959, Tel: 610-832-9585, www.astm.orgASTM A 309 Standard Test Method for Weight and Composition of Coating on Terne Sheet by the Triple-Spot TestASTM A 630 Standard Test Methods for Determination of Tin Coating Weights for Electrolytic Tin Plate ASTM B 117 Standard Practice for Oper
16、ating Salt Spray (Fog) Apparatus ASTM D 740 Methyl Ethyl Ketone Technical ASTM E 172 Standard Practice for Describing and Specifying the Excitation Source in Emission Spectrochemical Analysis (International Specification) ASTM E 376 Standard Practice for Measuring Coating Thickness by Magnetic-Field
17、 or Eddy-Current (Electromagnetic) Examination Methods ASTM E 427 Standard Practice for Testing for Leaks Using the Halogen Leak Detector (Alkali-Ion Diode) ASTM E 498 Standard Test Methods for Leaks Using the Mass Spectrometer Leak Detector or Residual Gas Analyzer in the Tracer Probe Mode ASTM E 5
18、15 Standard Test Method for Leaks Using Bubble Emission Techniques ASTM E 1282 Standard Guide for Specifying the Chemical Compositions and Selecting Sampling Practices and Quantitative Analysis Methods for Metals, Ores, and Related Materials ASTM G 47 Standard Test Method for Determining Susceptibil
19、ity to Stress-Corrosion Cracking of 2XXX and 7XXX Aluminum Alloy Products ASTM G 69 Standard Test Method for Measurement of Corrosion Potentials of Aluminum Alloys 3. REQUIREMENTS 3.1 Qualification The materials furnished under this specification shall be products which are qualified for listing on
20、the applicable qualified products list at the time set for opening of bids (See 4.2 and 6.2). Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS-S-83474A Page 3 of 123.2 Type I Type I material s
21、hall meet all of the requirements specified in Table 1 when cured for 60 to 70 minutes at 180 to 190 F plus 60 to 70 minutes at 350 to 360 F or cured to the manufacturers recommended step cure cycle, or minimum of 96 hours at ambient temperature of 75 F 5. Type I Class A material shall meet all of t
22、he requirements specified in Table 1 when cured for a period of 9 hours minimum at ambient temperature of 75 F 5. 3.3 Types II and III Types II and III materials shall meet all of the requirements specified in Table 1 when cured for 120 to 130 minutes at 200 to 210 F or to the manufacturers recommen
23、ded cure cycle, or minimum of 96 hours at ambient temperature of 75 F 5. TABLE 1 - PROPERTY REQUIREMENTS (PAGE 1 OF 2 PAGES) Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS-S-83474A Page 4 of
24、 12TABLE 1 - PROPERTY REQUIREMENTS (PAGE 2 OF 2 PAGES) 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspections requirements as specified herein. Except as otherw
25、ise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specificat
26、ion where such inspections are deemed necessary to assure supplies and services conform to the prescribed requirements.4.2 Quality Conformance Inspection 4.2.1 Acceptance Tests a. Lap shear strength at room temperature and 350 F for Type I and Type I Class A and room temperature and 270 F for Types
27、II and III. Metal shall be 2024-T81 clad. b. Ultimate compression strength at room temperature and at 350 F for Type I and Type I Class A and at room temperature and 270 F for Types II and III. c. Density 4.2.2 Tests and test specimens shall be in accordance with this specification. Results shall me
28、et the applicable requirement of Table 1. Three test specimens shall be used for each property requirement specified in Table 1 for each type of material except that the sheer strength specimens shall be in accordance with Figure 1 and 4.5.2.4. Specimens of each type shall be tested for each shipmen
29、t of each batch if a shipment consists of more than one batch. Data from test shall be forwarded with the shipment. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS-S-83474A Page 5 of 124.2.3
30、Retests shall automatically be accomplished in the event of a test failure. Failure of the retest shall result in rejection of the represented material. 4.2.4 Verification of any test in Table 1 may be conducted at the option of the Purchaser on any material received on production orders. Failure of
31、 the compound to meet test requirements shall result in rejection of the lot and necessary action to correct the discrepancy. 4.3 Cleaning of Adherends 4.3.1 Aluminum (except where use of release agent is specified - no cleaning required in that case). 4.3.1.1 Remove all surface dyes and other forei
32、gn material by solvent wiping with methyl-ethyl-ketone conforming to Federal Specification ASTM D 740, or an environmentally compliant solvent per AMS3167B. 4.3.1.2 Vapor degrease parts with 1,1,1 Trichloroethane, inhibited conforming to Specification MIL-T- 81533, or an equivalent environmentally c
33、ompliant vapor degreasing method. The parts shall be suspended in vapor until condensation ceases. 4.3.1.3 The parts shall be immersed 9 to 15 minutes in a solution of the following composition which is maintained at temperature of 145 to 160 F. (Solution composition shall be maintained within 10%.)
34、 Water (tap) 30 parts by weight Sulphuric Acid (66 Be) 10 parts by weight Fed. Spec. A-A-55828 Sodium DIchromate 4 parts by weight Fed. Spec. A-A-59123 4.3.1.4 Rinse the parts in clean tap water at room temperature for a minimum of 2 minutes, followed by a spray rinse for a minimum of 2 minutes in c
35、lean distilled or demineralized water at room temperature. If an air supply is used for spray rinsing, the air shall be filtered. 4.3.1.5 The panels shall be observed to make sure they hold a continuous film of water on the areas to be bonded. They shall be recleaned if the water film is not continu
36、ous. 4.3.1.6 The parts shall be dried in circulating air at 150 F or below. 4.3.1.7 Specimens shall be assembled and bonded within 72 hours of the completion of the cleaning process. Cleaned metal shall be protected from contamination during that time. 4.4 Curing of Specimens 4.4.1 Specimens shall b
37、e cured in accordance with the applicable cure cycle as required by 3.2 or 3.3 or in accordance with the manufacturers recommended cure cycle. When applying heat, the time from room temperature to the applicable cure temperature shall be not less than 10 minutes or more than 60 minutes. 4.4.2 All la
38、p shear specimens and sandwich panel specimens shall be cured under 25 psi 5 pressure. One layer of Fabric 1165, MIL-Y-1140 glass fabric, plain weave shall be used as a bond line spacer in lap shear specimens. Bond line thickness shall be 0.005 to 0.010 for lap shear tests. Copyright SAE Internation
39、al Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS-S-83474A Page 6 of 124.5 Specimen Configuration and Test Procedure 4.5.1 Shrinkage and Weight Loss of Molded Specimens 4.5.1.1 A closed steel mold with a rectangular ca
40、vity approximately 16 inch x 1.5 inch x 0.5” inch is to be used to prepare specimens. Alternatively, a glass cylinder approximately 1.0 inch ID and 5.0 inches in length may be used to prepare specimens. Catalyzed material is to be injected into the mold until it is completely filled. 4.5.1.2 The mat
41、erial shall be cured using the specified time-temperature cycle, then cooled to approximately 75 F and removed from the mold. 4.5.1.3 The length of the specimen shall be determined to the nearest 0.001 inch, and its weight to the nearest 0.1 gram. 4.5.1.4 The length of the mold cavity shall be deter
42、mined to the nearest 0.001 inch. 4.5.1.5 Shrinkage “as molded” is calculated by: % shrinkage ()=length of cavity length as moldedas moldedlength as molded(Eq. 1) 4.5.1.6 The specimen shall be exposed to the specified temperature condition (unrestrained). 4.5.1.7 At the end of the exposure, the speci
43、men shall be allowed to cool to room temperature, (70 to 80 F) and its weight and length determined to the previous accuracies. 4.5.1.8 Time required to raise specimen to exposure temperature shall not be included in exposure time. 4.5.1.9 % Weight loss at each test interval shall be calculated by:
44、()=weight as molded weight after exposure% weight loss 100weight as molded(Eq. 2) 4.5.1.10 % Shrinkage after exposure shall be calculated by: ()=length as molded length after exposure% shrinkage 100length as molded(Eq. 3) 4.5.2 Lap Shear Test - Fluid Exposure See Figure 1. Copyright SAE Internationa
45、l Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS-S-83474A Page 7 of 12FIGURE 1 4.5.2.1 Prepunched panels (finger panels) in accordance with MMM-A-132 or precut individual pieces shall be used for all lap shear tests. 4
46、.5.2.2 Metal to be 2024-T81 clad (0.064 inch). 4.5.2.3 Specimens 1 and 6 are controls and shall be removed and held while exposure portion of panel is exposed to specified environment. 4.5.2.4 After proper exposure as specified in 4.5.3, specimens 2, 3, 4, and 5 shall be tested with controls, within
47、 6 hours. 4.5.2.5 Load specimens with clamp type jaws using a loading rate of 600 to 700 pound/minute. 4.5.2.6 Calculate shear in psi, , by =PLWwhere:P = failing load inpounds L = overlap in inchesW = width of specimen in inches 4.5.2.7 L and W shall be determined to the nearest 0.001 inch. Copyrigh
48、t SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS-S-83474A Page 8 of 124.5.3 Fluid Resistance Test Exposure Conditions 4.5.3.1 Salt Water Spray Condition 4.5.3.1.1 Use ASTM B 117 except as follows:4.5.3.1.2 Suspend panel vertically by means of a non-metallic material, e.g., waxed string, through a 1/8 inch diameter hole drilled in the trim area. 4.5.3.1.3 The plane of the panel is t
