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 2012 SAE InternationalAll rights reserved. No part of this publication may b
3、e 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 USA)Fax
4、: 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/AMS3379AEROSPACEMATERIALSPECIFICATIONAMS3379Issued 2013-04Sealing Compound, Polysulfide Rubber Preformed
5、Stripsfor Sealing Removable Doors, Skins, and PanelsRATIONALEDevelopment of new specification for form-in-place gasket sealing compound.1. SCOPE1.1 FormThis specification establishes the requirements for a polysulfide sealing compound in putty consistency to be used for form-in-place sealing of remo
6、vable doors, skins, and panels.1.2 ApplicationThis sealing compound is for use in preparation of form-in-place gaskets for removable doors, skins, and panels, but usage is not limited to such applications. It can also be used for sealing of gaps, joints or other areas where conventional wet sealing
7、compounds may be used. This room temperature curing sealing compound strip is applicable for fuel-wetted and non-fuel-wetted form-in-place gaskets. This material is usable from -65 to 250 F (-54 to 121 C) with short term exposure (approximately six hours) to 360 F (182 C).This sealing compound is de
8、livered frozen in preformed strips for use. It provides a one-hour work life when thawed, exhibiting the consistency of a workable putty, and cures to a resilient seal at room temperature that is resistant to common aircraft fuels and fluids.1.3 Safety - Hazardous MaterialsShall be in accordance wit
9、h AS5502 (1.1).2. APPLICABLE DOCUMENTSThe issue of the following 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 t
10、he referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-77
11、6-4970 (outside USA), www.sae.org.AMS2471 Anodic Treatment of Aluminum Alloys Sulfuric Acid Process, Undyed CoatingAMS2629 Fluid, Jet ReferenceSAE AMS3379 Page 2 of 10AMS3100 Adhesion Promoter, for Polysulfide Sealing CompoundsAMS3276 Sealing Compound, Integral Fuel Tanks and General Purpose, Interm
12、ittent Use to 360 F (182 C)AMS3277 Sealing Compound, Polythioether Rubber Fast Curing for Integral Fuel Tanks and General Purpose, Intermittent Use to 360 F (182 C)AMS4045 Aluminum Alloy Sheet and Plate, 5.6Zn - 2.5Mg - 1.6 Cu - 0.23 Cr, 7075: (-T6 Sheet, -T651 Plate),Solution and Precipitation Heat
13、 TreatedAMS4911 Titanium Alloy, Sheet, Strip, and Plate, 6Al - 4V, AnnealedAMS-C-27725 Coating, Corrosion Preventative, for Aircraft Integral Fuel Tanks for Use to 250 F (121 C)ARP1917A Clarification of Terms Used in Aerospace Metals Specifications AS5127 Methods for Testing Aerospace SealantsAS5127
14、/1 Aerospace Standard Test Methods for Aerospace Sealants, Two-Component Synthetic Rubber CompoundsAS5502 Standard Requirements for Aerospace Sealants2.2 U.S. Government PublicationsAvailable from DLA Document Services, Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6396
15、,http:/quicksearch.dla.mil/.MIL-PRF-23377 Primer Coatings: Epoxy, High-SolidsMIL-PRF-23699 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base, NATO Code Number O-156MIL-PRF-83282 Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Metric, NATO Code Number H-537MIL-PRF-85285 Coating: P
16、olyurethane, Aircraft and Support Equipment MIL-PRF-85582 Primer Coatings: Epoxy, Waterborne2.3 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 B117 Standard Practice for Operating Salt Sp
17、ray (Fog) ApparatusASTM G85 Standard Practice for Modified Salt Spray (Fog) Testing2.4 PRI PublicationsAvailable from Performance Review Institute, 161 Thorn Hill Road, Warrendale, PA 15086-7527, Tel: 724-772-1616, www.pri-network.org.PD 2000 Procedures for an Industry Qualified Product Management P
18、rocessPRI-QPL-AMS3379 Products Qualified Under AMS3379SAE AMS3379 Page 3 of 103. TECHNICAL REQUIREMENTS3.1 MaterialsThe basic ingredient used in the manufacture of the sealing compound shall be synthetic rubber of the polysulfide type.The material shall be supplied preformed and frozen. When thawed,
19、 it shall be an easily workable putty for direct application. The compound shall contain no lead compounds and shall be chrome-free. The compound shall not be red or pink in color.3.2 Date of PackagingShall be in accordance with AS5502 (3.1).3.3 Toxicological FormulationsShall be in accordance with
20、AS5502 (3.2).3.4 QualityShall be in accordance with AS5502 (3.3).3.5 Shelf LifeThe shelf life of this material shall be at least 60 days from date of packaging when stored at temperatures at or below -80 F (-62 C).3.6 PropertiesThe sealing compound, when applied in accordance with manufacturers inst
21、ructions and cured as in 4.5.8, shall conform to the requirements shown in Table 1, determined in accordance with specified test methods:TABLE 1 PROPERTIESParagraph Test Property Requirement Test Method3.6.1 Specific Gravity, max. 1.65 AS5127/1 (6.1)3.6.2 Nonvolatile Content, %, min. 97 AS5127/1 (5.
22、1)3.6.3 Application Time hour, min. 1 4.6.13.6.4 Tack Free Time, hours, max. 5 AS5127/1 (5.8)3.6.5 Standard Cure Time (time to reach 30 Shore A) hours, max.5 AS5127/1 (5.9)3.6.6 Low Temperature Flexibility -65 F 2 (-54 C 1)1No cracking, checking or loss of adhesion4.6.23.6.7 Shear Strength, psi (kPa
23、) min./% cohesive failure min AS5127/1 (7.8)3.6.7.1 Standard Cure1100 (689)/95% Substrates per Table 23.6.7.2 Standard cure plus AMS2629 (JRF) immersion, 7 days 140 F (60 C)160 (414)/95% Substrates per Table 23.6.7.3 Standard cure plus MIL-PRF-83282 immersion, 48 hrs 140 F (60 C)160 (414)/95% Substr
24、ates per Table 2SAE AMS3379 Page 4 of 10TABLE 1 PROPERTIES (CONTINUED)Paragraph Test Property Requirement Test Method3.6.7.4 Standard cure plus MIL-PRF-23699 immersion, 48 hours 140 F (60 C), followed by 24 hours 250 F (121 C)160 (414)/95% Substrates per Table 23.6.7.5 Standard cure plus 3% NaCl imm
25、ersion, 7 days 140 F (60 C), followed by 24 hours 250 F (121 C)160 (414)/95% Substrates per Table 23.6.8 Corrosion Resistance1No corrosion under sealing compound after strippingAS5127/1 (7.9)3.6.9 Resistance to Hydrocarbons3.6.9.1 Weight Loss/Gain, %, max. 8 AS5127/1 (7.4)3.6.10 Repairability (Shear
26、 Strength), psi (kPa) min., % cohesive failure min.(4.6.3)3.6.10.1 Standard cure per 4.5.8. Apply repair sealing compound and cure per 4.5.8.1. Sealing compound to itself1100 (689)/95%2. Sealing compound to AMS3276 Class B1100 (689)/95%3. Sealing compound to AMS3277 Ty 2 Class B1100 (689)/95%3.6.10.
27、2 Standard cure per 4.5.8 followed by AMS2629immersion, 7 days 140 F (60 C). Dry for 24 hours 120 F. Apply repair sealing compound and cure per 4.5.8.1. Sealing compound to itself160 (414)/95%2. Sealing compound to AMS3276 Class B160 (414)/95%3. Sealing compound to AMS3277 Ty 2 Class B160 (414)/95%3
28、.6.11 Resistance to Thermal Expansion Sealing compoundshall be flush with groove within +0.010 and -0.003 inch(+0.25 and -0.08 mm) at the wide end of the test block andwithin +0.005 and -0.003 inch (+0.13 and -0.08 mm) at thenarrow end.AS5127/1 (6.4) Standard Heat Cycle in accordance with 4.5.3 SAE
29、AMS3379 Page 5 of 10TABLE 1 PROPERTIES (CONTINUED)Paragraph Test Property Requirement Test Method3.6.12 Heat Reversion Resistance The sealing compound shall not revert to a liquid orpaste-like consistency, nor shall it become brittle or lose adhesion.AS5127/1 (6.5)Standard Heat Cycle in accordance w
30、ith 4.5.33.6.13 Hydrolytic Stability Shore A 30 min AS5127/1 (6.6)3.6.14 Shaving and Sandability No rolling or tearing of sealing compound, smooth finishAS5127/1 (6.7)3.6.15 Paintability No separation from sealing compoundAS5127/1 (6.8)3.6.16 Tensile Strength, psi, min and Elongation, %, min AS5127/
31、1 (7.7)3.6.16.1 Standard Cure 150 psi (1034 kPa),50% elongation3.6.17 Storage Stability (4.6.4)3.6.17.1 Nonvolatile Content Same as 3.6.2Application Time Same as 3.6.3Tack Free Time Same as 3.6.4Standard Cure Time Same as 3.6.5Shear Strength1Same as 3.6.721Material shall be tested using AMS3100 adhe
32、sion promoter recommended by the manufacturer.2Test only Standard Cure Requirements (3.6.7.1).TABLE 2 SHEAR STRENGTH SUBSTRATES1 AMS4045 aluminum panel, sulfuric acid anodized per AMS2471, coated with AMS-C-277252 AMS4045 aluminum panel, sulfuric acid anodized per AMS2471, coated with MIL-PRF-233773
33、 AMS4045 aluminum panel, sulfuric acid anodized per AMS2471, coated with MIL-PRF-855824 AMS4045 aluminum panel, sulfuric acid anodized per AMS2471, coated with MIL-PRF-852855 AMS4911 titanium panel, bare6 AS4/3501-6 graphite/epoxy laminates4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for Inspec
34、tionShall be in accordance with AS5502 (4.1).4.1.1 Source InspectionShall be in accordance with AS5502 (4.1.1).4.1.2 Sampling and TestingShall be in accordance with AS5502 (4.1.2).SAE AMS3379 Page 6 of 104.2 Classification of TestsShall be in accordance with AS5502 (4.2).4.2.1 Qualification TestsAll
35、 technical requirements listed in Table 1 are qualification tests (See 8.2) and shall be performed on a production batch of the preformed and frozen sealing compound prior to shipment to a purchaser. When a change in ingredients and/or processing requires reapproval (See 4.4), the necessary testing
36、to verify compliance will be determined by the applicable Qualified Products Group (QPG).4.2.1.1 QualificationAll products sold to this specification shall be listed, or approved for listing, on the Qualified Products List, PRI-QPL-AMS3379 in accordance with PD 2000. The adhesion promoter used for q
37、ualification testing shall also be reported on the listing for informational purposes.4.2.2 Initial Acceptance TestsRequirements shown in Table 3 are initial acceptance tests and shall be performed on each batch of sealing compound prior to preform and freeze.TABLE 3 - INITIAL ACCEPTANCE TESTSTest R
38、equirement ParagraphNonvolatile Content 3.6.2Application Time 3.6.3Tack Free Time 3.6.4Standard Cure Time 3.6.5Shear Strength 3.6.711Test only Standard Cure Requirements4.2.3 Final Acceptance TestsRequirements shown in Table 4 are final acceptance tests and shall be performed on each lot of preforme
39、d and frozen sealing compound.TABLE 4 - FINAL ACCEPTANCE TESTSTest Requirement ParagraphApplication Time 3.6.3Tack Free Time 3.6.4Standard Cure Time 3.6.54.3 Sampling and TestingShall be in accordance with AS5502 (4.3)4.3.1 Acceptance TestsShall be in accordance with AS5502 (4.3.1)4.3.1.1 Batch and
40、LotA batch shall be defined as the quantity of material run through a mill or mixer at one time. A lot shall be defined as material from one batch of each component assembled (packaged) as finished product in one size and packaged at the same time. The lot, when used, shall be traceable to the batch
41、es of base compound and curing agent.SAE AMS3379 Page 7 of 104.3.1.2 Initial and Final Acceptance TestsEach batch shall be subjected to both initial and final acceptance testing. After successful completion of the initial acceptance tests, the batch shall be released for final packaging. During pack
42、aging, test strips shall be selected at random for final acceptance testing. Final acceptance testing is to be conducted on the final packaged product.4.3.1.3 If the batch is being packaged in different size packages, the final acceptance tests shall be conducted on each size package. If the sealing
43、 compound is being procured under different purchase orders, but the purchase orders call for the same type and size packages, it is only necessary to conduct the final acceptance tests one time.4.3.1.4 Tests are to be conducted in accordance with test methods outlined herein for acceptance tests. I
44、f tests are being performed at the end of the stated shelf life to update the shelf life of the sealing compound, and all tests are passed, the shelf life will be extended an additional 30 days.4.3.2 Qualification Test SamplesSamples should consist of enough sealing compound strips to perform all re
45、quired tests and two 1-pint (1/2-L) containers of adhesion promoter.Samples shall be identified as specified herein and below:SEALING COMPOUND, POLYSULFIDE RUBBER PREFORMED STRIPS FOR SEALING REMOVABLE DOORS, SKINS,AND PANELS AMS3379_MANUFACTURERS STRIP IDENTIFICATION_REQUIRED ADHESION PROMOTER_NAME
46、 OF MANUFACTURER_BATCH/LOT NUMBER_DATE OF PACKAGING_SHELF LIFE EXPIRATION DATE_STORE BELOW -80 F (-62 C)4.4 ApprovalShall be in accordance with AS5502 (4.4).4.5 Test Methods4.5.1 Standard TolerancesUnless otherwise specified herein, standard tolerances of AS5127 (3.1) shall apply.4.5.2 Standard Test
47、 ConditionsStandard laboratory conditions shall be as specified in AS5127 (4). Test specimens shall be prepared and immediately after completion of preparation, shall be placed under 77 F (25 C) and 50% relative humidity 5 to cure according to 4.5.8. Except as otherwise directed herein, tests shall
48、be performed at conditions in accordance with AS5127 (4).4.5.3 Standard Heat CycleWhen directed herein, the following Standard Heat Cycle shall be applied to sealing compounds six times, cooling to less than 100 F (38 C) between cycles:4 hours at 260 F (127 C), followed by40 minutes at 320 F (160 C),
