1、 Comments, suggestions or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to relaydla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASS
2、IST Online database at https:/assist.dla.mil. AMSC N/A FSC 5999 INCH-POUND MIL-DTL-83528E 13 August 2012 SUPERSEDING MIL-DTL-83528D 20 September 2011 DETAIL SPECIFICATION GASKETlNG MATERIAL, CONDUCTIVE, SHIELDING GASKET, ELECTRONIC, ELASTOMER, EMI/RFI GENERAL SPECIFICATION FOR This specification is
3、approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the general requirements for electrically conductive elastomeric shielding gaskets. These gaskets are intended for use in electromagnetic interference/radio frequency int
4、erference suppression applications. 1.2 Classification. 1.2.1 Part or Identifying Number (PIN). PINs to be used for gaskets acquired to this specification are created as follows: M 83528/ 001 C 005 Military designator General specification number Specification sheet number (3 digits) Material type (
5、see 1.2.1.1) Dash number (see 3.1) 1.2.1.1 Material type. A Silver-plated, copper-filled silicone capable of 110 dB of plane wave shielding effectiveness at 10 GHz with a continuous use temperature range of -55C to +125C. B Silver-plated, aluminum-filled silicone capable of 100 dB of plane wave shie
6、lding effectiveness at 10 GHz with a continuous use temperature range of -55C to +160C. C Silver-plated, copper-filled fluorosilicone capable of 110 dB of plane wave shielding effectiveness at 10 GHz with a continuous use temperature range of -55C to +125C and resistant to solvents and jet fuels. D
7、Silver-plated, aluminum-filled fluorosilicone capable of 90 dB of plane wave shielding effectiveness at 10 GHz, with, a continuous use temperature range of -55C to +160C, and resistant to solvents and jet fuels. E A medium durometer, pure silver-filled silicone capable of 110 dB of plane wave shield
8、ing effectiveness at 10 GHz with a continuous use temperature range of -55C to +160C. F Pure silver-filled fluorosilicone capable of 110 dB of plane wave shieldingeffectiveness at 10 GHz with a continuous use temperature range of -65C to +160C and resistant to solvents and jet fuels. Provided by IHS
9、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83528E 2 G Silver-plated, copper-filled silicone, expanded copper foil reinforced, capable of 110 dB of plane wave shielding effectiveness at 10 GHz with a continuous use temperature range of -45C to +125C. H
10、A high durometer, pure silver-filled silicone capable of 110 dB of plane wave shielding effectiveness at 10 GHz with a continuous use temperature range of -55C to +160C. J A low durometer, pure silver-filled silicone, capable of 80 dB of plane wave shielding effectiveness at 10 GHz with a continuous
11、 use temperature range of -55C to +160C. K A high durometer silver-plated, copper-filled silicone capable of 110 dB of plane wave shielding effectiveness at 10 GHz with a continuous temperature range of -45C to +125C. L Silver-plated, nickel-filled silicone capable of 100 dB of plane wave shielding
12、effectiveness at 10 GHz with a continuous use temperature range of -55C to +125C. M Silver plated glass-filled silicone capable of 100 dB of plane wave shielding effectiveness at 10 GHz with a continuous temperature range of -55C to +160C. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in
13、 this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document us
14、ers are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part o
15、f this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATIONS TT-I-735 - Isopropyl Alcohol. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5624 - Turbine Fuel, Aviation, Grades JP-4 and
16、JP-5. MIL-PRF-680 - Degreasing Solvent. MIL-PRF-5606 - Hydraulic Fluid, Petroleum Base, Aircraft, Missile, and Ordnance. MIL-PRF-7808 - Lubricating Oil, Aircraft Turbine Engine, Synthetic Base. MIL-PRF-23699 - Lubricating Oil, Aircraft Turbine Engines, Synthetic Base, NATO Code Number 0-156. MIL-PRF
17、-87252 - Coolant Fluid, Hydrolytically Stable, Dielectric. MIL-PRF-87937 - Cleaning Compounds, Aerospace Equipment. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-129 - Military Marking for Shipment and Storage. MIL-STD-202 - Test Methods for Electronic and Electrical Component Parts. (Copies of these docu
18、ments are available online at https:/assist.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unles
19、s otherwise specified, the issues of these documents are those cited in the solicitation or contract. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83528E 3 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D395 - Standard Test Methods
20、 for Rubber Property - Compression Set. ASTM D412 - Standard Test Methods for Rubber Vulcanized and Thermoplastic Elastomers - Tension. ASTM D471 - Standard Test Method for Rubber Property-Effect of Liquids. ASTM D575 - Standard Test Methods for Rubber Properties in Compression. ASTM D624 - Standard
21、 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers. ASTM D792 - Standard Test Method for Density and Specific Gravity (Relative Density) of Plastics by Displacement. ASTM D991 - Test Methods for Rubber Property - Volume Resistivity of Electrically Conductiv
22、e and Antistatic Products. ASTM D1329 - Standard Test Method for Evaluating Rubber Property Retraction at Lower Temperatures (TR Test). ASTM D2240 - Standard Test Method for Rubber Property Durometer Hardness. ASTM D4814 - Standard Specification for Automotive Spark-Ignition Engine Fuel. (Copies of
23、these documents are available online at http:/www.astm.org/ or from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS (IEEE) IEEE299 - Measuring the Effectiveness of Enclosures, Electromagnetic S
24、hielding. (Copies of these documents are available online at http:/www.ieee.org/ or from the Institute of Electrical and Electronic Engineers, 445 Hoes Lane, Piscataway, NJ 08855-1331. SOCIETY OF AUTOMOTIVE ENGINEERS INC. (SAE) SAE-AMS-1424 Deicing/Anti-Icing Fluid, Aircraft, SAE Type I (Copies of t
25、his document are available online at http:/www.sae.org/ or from the Society of Automotive Engineers Inc., 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and th
26、e references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual item
27、requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 Qualification. The gaskets furnished under this specification sha
28、ll be a product which has been tested, and has passed the qualification inspection specified herein, and has been listed on or approved for listing on the applicable Qualified Products List (QPL). 3.3 Visual inspection. Visual inspection shall be made in accordance with 4.5.2. 3.3.1 Dimensions. The
29、dimensions and tolerances for qualification samples are controlled by the applicable test procedure specification (see 4.5). Product dimensions and tolerances shall meet the requirements of the applicable product specification (see 3.1) controlled by this specification. 3.3.2 Characteristics. Unless
30、 otherwise specified (see 3.1), standard test specimens shall meet the characteristics indicated in table I. These properties shall be as specified on the applicable specification sheet for actual product-form. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
31、 IHS-,-,-MIL-DTL-83528E 4 a. Military PIN (see 1.2.1 and 3.1). b. Manufacturers source code. c. Material type (see 1.2.1.1). d. Manufacturing cure date code. e. Manufacturing batch number. f. Fabricator plant code symbol, when applicable. 3.5 Cleaning and drying. Gaskets shall be cleaned and dried b
32、y any suitable process or processes that are not injurious to the item. 3.6 Preservative application. Preservatives, if used, shall be a noncorrosive, sulfur free stiffener within each unit pack to protect the gasket. 3.7 Recycled, recovered, or environmentally preferable materials. Recycled, recove
33、red, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.8 Pure tin. The use of pure tin, as an underplate or final f
34、inish, is prohibited both internally and externally. Tin content of gaskets and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.4). 3.9 Workmanship. Gaskets shall be processed in such a manner as to be representative of controlled in
35、dustrial techniques. All surfaces shall be free from burrs, die marks, chatter marks, scratches, dirt, grease, scale, splinters, and other defects that could affect life, serviceability, performance, or appearance of the gasket. 4. VERIFICATION 4.1 Classification of inspections. The inspection requi
36、rements specified herein are classified as follows: a. Qualification inspection (see 4.2). b. In-process inspection (see 4.3). c. Conformance inspection (see 4.4). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83528E 5 TABLE I. Characterist
37、ics. Item No. Inspection Units Toler-ance Material type A B C D E F G H J K L M 1. Operating temperature range C N/A -55 -55 -55 -55 -55 -65 -45 -55 -55 -45 -55 -55+125 +160 +125 +160 +160 +160 +125 +160 +160 +125 +125 +1602. Specific gravity Sp gr 23/23C 13% 3.5 2.0 4.0 2.0 3.5 4.0 4.75 1/ 4.0 1.7
38、3.5 4.0 1.93. Hardness Shore A units 7 65 65 75 70 65 75 80 80 45 85 75 654. Compression/ deflection Percent Min 3.5 3.5 3.5 3.5 2.5 3.5 2.5 2.5 8.0 2.5 3.5 3.55. Tensile strength Pounds per square inch Min 200 200 180 180 300 250 600 400 150 400 200 2006. Elongation Percent Min 100 100 100 60 200 1
39、00 20 90 50 100 100 100Max 300 300 300 260 500 300 N/A 290 250 300 300 3007. Compression set Percent Max 32.0 32.0 35.0 30.0 45.0 60.0 N/A 60.0 35.0 35.0 32.0 30.08. Tear strength Pounds per inch Min 25 30 35 35 50 40 70 60 20 40 30 309. Volume resistivity (as received) Ohm-cm Max .004 .008 .010 .01
40、2 .002 .002 .007 .005 .010 .005 .005 .00610. Shielding effectiveness 20 MHz-10 GHz (E-Field) dB Min 110 100 110 90 110 110 110 110 80 110 100 10011. Electrical stability during vibration During Ohm-cm Max .006 .012 .015 .015 .010 .010 .010 .006 .015 .010 .010 .009After .004 .008 .010 .012 .002 .002
41、.007 .005 .010 .005 .005 .00612. Electrical stability after break Ohm-cm Max .008 .015 .015 .015 .010 .010 N/A .006 .020 .010 .010 .00913. Low temperature flex TR10 C Max -55 -55 -55 -55 -55 -65 N/A -55 -55 -45 -55 -55TR70 -55 -55 -40 -40 -40 -40 N/A -40 -55 -35 -55 -5514. Volume resistivity (after
42、life testing) Ohm-cm Max .010 .010 .015 .015 .010 .010 .010 .008 .015 .010 .010 .01515. Volume resistivity after electromagnetic pulse (EMP) exposure 2/ Ohm-cm Max .010 .010 .015 .015 .010 .010 .010 .008 .015 .010 .010 .01516. Fluid immersion 3/ 4/ - - N/S N/S SUR SUR N/S SUR N/S N/S N/S N/S N/S N/S
43、1/ Tolerance on material G only is 0.75 sp gr 23/23C. 2/ 0.9 kA per linear inch of perimeter. 3/ N/S = Not survivable; SUR = Survivable. 4/ Maximum volume swell of 25 percent and maximum change in hardness of 15 shore A units. Provided by IHSNot for ResaleNo reproduction or networking permitted with
44、out license from IHS-,-,-MIL-DTL-83528E 6 4.2 Qualification inspection. The qualification inspection shall be performed at a laboratory acceptable to the Government (see 6.3) on sample units produced with equipment and procedures normally used in production. Qualification inspection shall consist of
45、 the tests and inspections specified in table II. 4.2.1 Sample size. Samples shall be selected from normal production from one batch for each material type (see 1.2.1.1) for which qualification is sought. Actual sample size shall be sufficient to perform all the inspections in table II. Size and sha
46、pe of the test specimens shall be in accordance with the applicable test method. A single 360 square inch by .055 in (1.40 mm) to .120 in (3.05 mm) thick .027 in (0.69 mm) .005 in ( 0.13 mm)thick for type G) sample should be sufficient for qualification testing. 4.2.2 Inspection routine. The sample
47、shall be subjected to the inspections specified. When the specimen is to be used for more than one test, the order of testing shall be accomplished in a sequence that will not effect the results of subsequent testing. 4.2.3 Failures. One or more failures shall be cause for refusal to grant qualifica
48、tion approval. Failure criteria for specimens shall be as specified in the applicable method paragraph or requirement paragraph. 4.2.4 Retention of qualification. To retain qualification, the contractor shall forward a report at 12-month intervals to the qualifying activity. The qualifying activity
49、shall establish the initial reporting date. The report shall consist of a summary of the results of the in-process inspection and the tests performed for inspection of product for delivery (group A), indicating, as a minimum: The number of lots that have passed, the number that have failed, and actual test data for periodic inspection (group B) if performed in that reporting period. Failure to su
