1、AEROSPACE MATERIAL SPECIFICATIONAMS-R-81835Issued JUL 1999Remover, Organic Coating, Hot Tank TypeFSC 8010NOTICEThis document has been taken directly from U.S. Military Specification MIL-R-81835(AS), Amendment 1 and contains only minor editorial and format changes required to bring it into conformanc
2、e with the publishing requirements of SAE technical standards. The initial release of this document is intended to replace MIL-R-81835(AS), Amendment 1. Any part numbers established by the original specification remain unchanged.The original Military Specification was adopted as an SAE standard unde
3、r 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 voti
4、ng 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 qualifie
5、d products lists (QPLs) has not been adopted by SAE and is not part of this SAE technical document.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 appl
6、icability and 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 reaffirmed, revised, or cancelled. SAE invites your written comments and
7、 suggestions. Copyright 2008 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
8、PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org Reaffirmed JAN 2008AMS-R-81835 SAE AMS-R-81835- 2 -1. SCOPE:1.1 This specification covers the requirements for one grad
9、e of remover of various organic coatings from aircraft parts.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 to the extent specified herein.2.1 U.S. Government Publications: Availabl
10、e from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.P-D-680 Dry Cleaning SolventQQ-A-250/4 Aluminum Alloy 2024, Plate and SheetQQ-A-250/5 Aluminum Alloy Alclad 2024, Plate and SheetQQ-A-250/12 Aluminum Alloy 7075, Plate and SheetQQ-A-250/13 Aluminu
11、m Alloy Alclad 7075, Plate and SheetPPP-D-729 Drums, Metal, 55 Gallon (For Shipment of Noncorrosive Material)QQ-M-44 Magnesium Alloy, Plate and Sheet (AZ31B)QQ-P-416 Plating, Cadmium (electrodeposited)MIL-M-3171 Magnesium Alloy, Process for Pretreatment and Prevention Of Corrosion OnMIL-C-5541 Chemi
12、cal Films and Chemical Film Materials For Aluminum and Aluminum AlloysMIL-O-6082 Lubricating Oil, Aircraft Reciprocating Engine (Piston)MIL-S-7952 Steel, Sheet and Strip, Uncoated, Carbon (1020 and 1025) Aircraft QualityMIL-A-8625 Anodic Coatings, For Aluminum and Aluminum AlloysMIL-T-9046 Titanium
13、and Titanium Alloy, Sheet, Strip and PlateMIL-C-22750 Coating, Epoxy PolyamideMIL-P-23377 Primer Coating, Epoxy Polyamide, Chemical and Solvent ResistantMIL-C-27725 Coating, Corrosion Preventive, For Aircraft Integral Fuel TanksMIL-C-81309 Corrosion Preventive Compound, Water Displacing, Ultra-Thin
14、FilmMIL-P-81352 Lacquer, Acrylic (For Naval Weapons Systems)MIL-C-81773 Coating, Polyurethane, Aliphatic, Weather ResistantMIL-STD-105 Sampling Procedures and Tables for Inspection by AttributesMIL-STD-129 Marking for Shipment and StorageAMS-R-81835 SAE AMS-R-81835- 3 -3. REQUIREMENTS: 3.1 Compositi
15、on: The formulation of the remover shall be optional with the manufacturer, but shall be restricted by other requirements specified herein. The remover shall be a liquid from 60F to 180F.3.1.1 The product shall be free of any materials which may produce obnoxious vapors in such concentrations as to
16、become an annoyance or a medical hazard to personnel when used in accordance with the directions specified herein.3.2 Seal: The seal shall consist essentially of water, corrosion inhibitors and rinsing agents. The pH of the seal shall be 10 0.5. The volume of the seal shall be not less than 10% nor
17、more than 15% of the total volume of remover.3.3 Flammability: When tested as specified in 4.4.3, the solvent layer shall continue to burn no longer than 3 seconds after removal of the flame.3.4 Stripping properties: When tested as specified in 4.4.4, the remover shall strip all organic finishes nor
18、mally encountered on removed aircraft parts.3.5 Oil removal: The material shall remove oil deposits when tested as specified in 4.4.5.3.6 Corrosiveness: The remover shall show no visible trace of corrosion nor show more than 0.2 mg. loss of weight of panel after 24 hours immersion when tested as spe
19、cified in 4.4.6.3.7 Orthodichlorobenzene content: The manufacturer shall certify that the solvent layer of the remover does not contain more than 20% by volume of orthodichlorobenzene.3.8 Storage stability: The manufacturer shall certify that the remover will conform to all requirements of this spec
20、ification after 6 months storage at 75 5F.AMS-R-81835 SAE AMS-R-81835- 4 -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 inspection requirements as specified here
21、in. Except as otherwise specified in the contract or order, the supplier may utilize 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
22、 set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.4.2 Sampling: 4.2.1 Lot: A lot shall consists of remover produced by one manufacturer, with no change in process or materials, provided the operation is cont
23、inuous. In the event the process is a batch process, each batch shall constitute a lot.4.2.2 Sampling for inspection of filled containers: A random sample of filled containers shall be selected from each lot offered for inspection in accordance with MIL-STD-105 at Inspection Level I, and Acceptable
24、Quality Level (AQL) = 2.5 percent defective to verify compliance with this specification regarding fill, closure, marking and other requirements not involving tests.4.2.3 Sampling for tests: Two containers shall be selected at random from each inspection lot. If more than one lot is represented in t
25、he shipment, each lot represented shall be treated as a separate shipment for sampling purposes. The contents of each container having been selected at random for sampling, shall be thoroughly mixed immediately prior to sampling. Each sample shall be tested to determine compliance with this specific
26、ation.4.3 Quality assurance inspection: 4.3.1 Inspection of filled containers: Each sample filled container selected in accordance with 4.2.2 shall be examined for defects of the container and the closure, for evidence of leakage, and for unsatisfactory marking; each sample filled container shall al
27、so be weighed to determine the amount of contents. Any container in the sample, having one or more defects, or under required fill, shall be rejected and if the number of defective containers in any sample exceeds the acceptance number for the applicable sampling plan of MIL-STD-105, the lot represe
28、nted by the sample shall be rejected.4.3.2 Lot acceptance tests: The samples selected in accordance with 4.2.3 shall be subjected separately to the tests specified in 4.4. If either sample fails one or more of these tests, the lot shall be rejected.AMS-R-81835 SAE AMS-R-81835- 5 -4.4 Test procedures
29、: 4.4.1 Composition: A representative sample of the remover shall be cooled to 60F and held at that temperature for 1 hour. There shall be no evidence of solidification. The sample shall then be heated to 180F and held at that temperature for 1 hour. There shall be no evidence of boiling.4.4.2 Seal:
30、 200 ml of a representative sample of the remover shall be placed in a graduated cylinder and allowed to stand overnight. The seal volume shall then be determined. The pH value of the seal shall be determined using a pH meter with a high alkali resistant glass electrode.4.4.3 Flammability: 4.4.3.1 P
31、reparation of panel: One end of a clean metal panel, 6 by 1 inch shall be held at an angle of approximately 45 degrees. The solvent layer of the material shall be poured along the upper edge of the panel, allowing the liquid to drain freely over the surface. The liquid wetting the reverse side of pa
32、nel shall be wiped clean before proceeding with the test.4.4.3.2 Procedure: A microburner flame, not exceeding 3/16 inch in length, shall be passed back and forth along the lower edge of the panel within a 2 second period. This operation shall be repeated three times at 3 second intervals. If the li
33、quid ignites, the burner shall be removed and observation made to determine whether the liquid continues to burn. If the liquid continues to burn the duration of burning shall be noted.4.4.4 Stripping Properties: Three by six inch panels shall be prepared as described in Table I. The panels shall be
34、 completely immersed in the active layer of the remover. The remover shall be maintained at a temperature not exceeding 160F. The coating shall be completely removed after one hour. Moderate brushing may be used.4.4.5 Oil removal: A 0.020 by 3 by 6 inch anodized aluminum alloy panel shall be coated
35、with grade 1100 oil conforming to Specification MIL-O-6082 and completely immersed in the solvent layer of the compound (with seal). The panels shall be removed and rinsed thoroughly under tap water at room temperature 25C (77F). The panel shall be free of oil.AMS-R-81835 SAE AMS-R-81835- 6 -TABLE I
36、 - Test Panel PropertiesAMS-R-81835 SAE AMS-R-81835- 7 -4.4.6 Corrosiveness: 4.4.6.1 Preparation of test panels: Test panels 1 by 1 by 0.05 inches shall be made from each of the metals specified in Table II. Panels shall be cleaned with mineral spirits using a swab of absorbent cotton. The panels sh
37、all then be wiped with paper toweling, dipped in acetone and dried with paper toweling.TABLE IIMetal Test Panels4.4.6.2 Procedure: Weigh the cleaned panels and immerse them in the solvent layer maintained at 155 5F for 24 hours. The panels shall not touch each other on the sides of the container. Af
38、ter 24 hours remove the panels, rinse with mineral spirits, dry, and re-weigh. Examine for severe visible attack such as pitting and staining.5. PREPARATION FOR DELIVERY: 5.1 Preservation and Packaging: Preservation and packaging shall be level A or C as specified.5.1.1 Level A: Unless otherwise spe
39、cified, the remover shall be furnished in 55 gallon drums conforming to PPP-D-729.5.1.2 Level C: Unless otherwise specified, packaging shall be in accordance with the manufacturers commercial practice.5.2 Packing: 5.2.1 Level A: Remover, packaged in accordance with 5.1.1, shall require no overpackin
40、g.AMS-R-81835 SAE AMS-R-81835- 8 -5.2.2 Level C: Remover, packaged in accordance with 5.1.2, shall be packed to afford protection against damage during direct shipment from the supply source to the first receiving activity for immediate use. Container shall be in accordance with Uniform Freight Clas
41、sification Rules or regulations of other carriers applicable to the mode of transportation.5.3 Marking: 5.3.1 Normal Marking: Containers shall be marked in accordance with MIL-STD-129. The shipment marking nomenclature shall be:REMOVER, ORGANIC COATING, HOT TANK TYPE5.3.2 Additional Marking: Each co
42、ntainer of remover shall be marked with the manufacturers directions for use. Each container shall also have a label with the following precautions:PRECAUTIONS1. Organic coating remover contains ingredients harmful to skin and eyes.2. Avoid contact of remover with rubber, asphaltic base floors, and
43、walkways.3. Avoid enclosed or unventilated areas.4. Store remover indoors, or in an area well protected against weather conditions.6. NOTES: 6.1 Intended Use: The organic finish remover covered by this specification is intended for removing coatings from engine parts, wheels, and small airframe sect
44、ion parts that have been removed from the aircraft. The material is for use in the 160 5F temperature range. The parts should be degreased prior to stripping. All parts shall be completely immersed in the active layer and withdrawn slowly through the seal.Rinse with warm water and spray the parts wi
45、th a water displacing preservative, MIL-C-81309. Any residual preservative is easily removed with mineral spirits, P-D-680 prior to refinishing.AMS-R-81835 SAE AMS-R-81835- 9 -6.2 Ordering data: Procurement documents should specify the following:(a) Title, number and date of this specification.(b) Q
46、uantity of remover desired.(c) Type and size of containers if other than as specified in 5.1.(d) Selection of applicable levels of preservation, packaging and packing (see 5.1 and 5.2).6.3 Unit of purchase: The unit of purchase for the remover is the U.S. gallon of 231 cubic inches at 15.6C (60F).PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “J”
