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 entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, 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 1999 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.
3、A.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-7121 FAX: (724) 776-0243TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS: http:/www.sae.org400 Commonwealth Drive, Warrendale, PA 15096-0001AEROSPACE MATERIAL SPECIFICATIONAMS-I-10Issued SEP 2000Insulating Compound, Electrica
4、l, Ceramic,Class L NOTICEThis document has been taken directly from U.S. Military Specification MIL-I-10B, Amendment 3, and contains only minor editorial and format changes required to bring it into conformance with the publishing requirements of SAE technical standards. The initial release of this
5、document is intended to replace MIL-I-10B, Amendment 3. Any part numbers established by the original specification remain unchanged.The original Military Specification was adopted as an SAE standard under the provisions of the SAE Technical Standards Board (TSB) Rules and Regulations (TSB 001) perta
6、ining 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 voting at the SAE Committee level, and (b) the use of the existing government specification or standa
7、rd 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 qualified products lists (QPLs) has not been adopted by SAE and is not part of this SAE technical documen
8、t.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS-I-10 SAE AMS-I-10- 2 -1. SCOPE:1.1 Scope: This specification covers class L, low dielectric constant (12 or under), ceramic, electrical, insulating
9、 compounds, for use in electronic, communications, and allied electrical equipments, and the grading thereof (see 6.1).1.2 Classification: This specification shall cover only those insulating compounds characterized by combining the specific designators of 1.2.1 to 1.2.5, inclusive.1.2.1 Insulating
10、compound designator: Insulating compounds shall be identified by the single letter designator “L”.1.2.2 Grade designators: Insulating compounds shall be further identified by three numbers (grade designators) following the above designator, the first representing dielectric loss index at one megaher
11、tz (MHz), the second dielectric strength, and the third flexural strength (modulus of rupture), as specified, i.e., L422- (see 6.1 and 6.2).1.2.2.1 Dielectric loss index at 1 MHz: The designator for dielectric loss index is determined by the maximum dielectric loss index at 1 MHz of the specimens te
12、sted, as follows:1.2.2.2 Dielectric strength: The designator for dielectric strength is determined by the average dielectric strength of the specimens tested, as follows:Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without li
13、cense from IHS-,-AMS-I-10 SAE AMS-I-10- 3 -1.2.2.3 Flexural strength (modulus of rupture): The designator for flexural strength (modulus of rupture) is determined by the average flexural strength (modulus of rupture) of the specimens tested, as follows:1.2.3 X-band designators: When insulating compo
14、unds are required for frequency applications from 100 MHz to 24 gigahertz (GHz), they shall be identified by the designator “X”, followed by a one-digit number, a slant line, and a two-digit number. The one-digit number shall represent dielectric loss index measured at some X-band frequency in the r
15、ange from 8.2 GHz to 12.4 GHz, using the table of grade designators of 1.2.2.1, and the two-digit number shall represent dielectric constant measured at some X-band frequency (see 1.2.3.1), as specified (see 6.1 and 6.2).1.2.3.1 Dielectric constant at X band: The designator for dielectric constant i
16、s determined by the dielectric constant at some X band frequency in the range from 8.2 to 12.4 GHz of the specimens tested as follows:Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS-I-10 SAE AMS-I-
17、10- 4 -1.2.4 Thermal conductivity designator: When high thermal conductivity (see 3.7) insulating compounds are required, they shall be identified by the designator “T”, i.e., L422T- or L422 X6/04T-. (See 6.1 and 6.2).1.2.5 Finish designator: Insulating compounds shall be further identified by a sin
18、gle letter designator, “G” or “C,” to represent finish, i.e., L323G, L323 X/04G, L323TG or L323 X6/04TG. (See 6.1 and 6.2).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 exte
19、nt specified herein.2.1 U.S. Government Publications: Available from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.MIL-STD-102 Test Methods for Electronic and Electrical Component PartsCopyright SAE International Provided by IHS under license with S
20、AENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS-I-10 SAE AMS-I-10- 5 -2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.ASTM D116 Testing Vitrified Ceramic Materials for Electrical ApplicationsASTM D150 A-C Capa
21、citance, Dielectric Constant, and Loss Characteristics of Electrical Insulating MaterialsASTM D2520 Complex Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials at Microwave Frequencies and Temperatures up to 1650 degrees CASTM C408 Thermal Conductivity by the Cut Bar Appartus
22、2.3 Other publications: Available from the Defense Documentation Center, Cameron Station, Alexandria, Virginia 22314, under number AD440-377.Resonant Rectangular Cavity Perturbation Method in Final Report U.S. Army Electronics Command Contract DA 36-039-AMC-00008(E), Task 7013. REQUIREMENTS: 3.1 Qua
23、lification: Insulating compounds furnished under this specification shall be of a product which has been tested and has passed the qualification tests specified in 4.4 and has been listed on or approved for listing on the applicable qualified products list (see 6.3).3.2 Material: The material shall
24、be natural or synthetic mineral (see 6.1), or combinations thereof, so compounded that, when pressed, extruded, or otherwise processed, then fused, or sintered by heat, it provides a body compound meeting the requirements of this specification.3.2.1 Glaze: Polycrystalline body materials covered by t
25、his specification shall be either glazed or unglazed, as specified (see 6.2). When glazed body materials are specified, the glaze shall not exhibit pinholes, nor shall it be crazed or show any shivering (peeling). The body materials shall not be impregnated or otherwise treated with organic sealant
26、or coating materials such as silicones, etc. Non-crystalline amorphous materials, such as glass, which, as molded, extruded, or otherwise processed, have a glass-like surface, shall be considered as glazed.3.2.1.1 Color: The color of glaze on glazed body compounds shall be as specified (see 6.2).Cop
27、yright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS-I-10 SAE AMS-I-10- 6 -3.3 Dielectric constant and loss index at 1.0 MHz: When insulating compounds are tested as specified in 4.6.1.1, the dielectric co
28、nstant shall not exceed 12, and the dielectric loss index shall not exceed the value cited in 1.2.2.1 for the grade specified.3.3.1 Dielectric constant and loss index at X-band (when specified) (see 6.2): When insulating compounds are tested as specified in 4.6.1.2 the dielectric constant and loss i
29、ndex shall be in accordance with the grades specified in 1.2.3 and 1.2.3.1.3.4 Dielectric strength: When insulating compounds are tested as specified in 4.6.2, the average dielectric strength shall not be less than the minimum value cited in 1.2.2.2 for the grade specified.3.5 Flexural strength (mod
30、ulus of rupture): When insulating compounds are tested as specified in 4.6.3, the average flexural strength (modulus of rupture) shall not be less than the minimum value cited in 1.2.2.3 for the grade specified.3.6 Porosity: When insulating compounds are tested as specified in 4.6.4, there shall be
31、no evidence of porosity.3.7 Thermal conductivity (when specified) (see 6.2): When insulating compounds are tested as specified in 4.6.5, the average thermal conductivity shall be not less than at 100 F (37.8 C), and not less than at 257 F (125 C). The lowest value obtained for any one specimen shall
32、 not deviate from the average by more than 20 percent.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for inspection: 4.1.1 Supplier: The supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his ow
33、n or any other inspection facilities and services acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to the prescribed requirements.4
34、.1.1.1 Test equipment and inspection facilities: Test equipment and inspection facilities shall be of sufficient accuracy, quality, and quantity to permit performance of the required inspection. The supplier shall establish calibration of test equipment to the satisfaction of the Government.1608 BTU
35、 X INHR X FT2X F-1200 BTU X INHR X FT2X F-Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS-I-10 SAE AMS-I-10- 7 -4.2 Classification of inspection: The examination and testing of insulating compounds
36、 shall be classified as follows:a) Qualification inspection (see 4.4).b) Quality conformance inspection (see 4.5).4.3 Inspection conditions: Unless otherwise specified herein, all inspection shall be made in accordance with the general requirements of MIL-STD-202.4.4 Qualification inspection: Qualif
37、ication inspection shall be performed at a laboratory acceptable to the Government (see 6.3).4.4.1 Sampling plan: Six specimens of the form and dimensions specified in the applicable method paragraph shall be submitted for each qualification test specified in table I, except for porosity and thermal
38、 conductivity (see 4.6.4 and 4.6.5). The specimens shall be molded or extruded, and glazed if required from production compounds by methods representative of production, or shall be machined from blanks which have been so prepared, except as required by the difference in form between the test specim
39、ens and the finished product.TABLE I. Qualification testing4.4.2 Extent of qualification: Qualification approval of a specific grade designation will constitute approval for other grades in which the individual designators for dielectric loss index, dielectric withstanding voltage, dielectric consta
40、nt, and flexural strength (modulus of rupture) are numerically lower.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS-I-10 SAE AMS-I-10- 8 -4.4.3 Retention of qualification: To retain qualification,
41、 the supplier shall forward, at 24-month intervals, to the qualifying activity, a summary of the results of batch-acceptance tests, indicating as a minimum the number of batches which passed and the number which failed, and a summary of the results of periodic-batch-check tests, including the number
42、 and type of any failures. The summary shall include those tests performed during that 24-month period. If the summary of the test results indicates nonconformance with specification requirements, action shall be taken to remove the failing product from the qualified products list. Failure to submit
43、 the summary shall result in loss of qualification for that product. In addition to the periodic submission of inspection data, the supplier shall immediately notify the qualifying activity at any time during the 24-month period that the inspection data indicates failure of the qualified product to
44、meet the requirements of the specification.4.5 Quality conformance inspection: Quality conformance inspection shall consist of batch-acceptance inspection (see 4.5.2) and periodic-batch-check inspection (see 4.5.3).4.5.1 Batch: A batch shall consist of all the body compounds produced from essentiall
45、y the same material under essentially the same conditions and offered for inspection in any three-month period.4.5.2 Batch-acceptance inspection: Batch-acceptance inspection shall be made on each batch of compound of a particular product designation and shall be the basis on which acceptance or reje
46、ction of the batch is made. Batch-acceptance inspection shall consist of determination of dielectric constant and dielectric loss index and comparison with the specified value corresponding to the grade designator established for the product being inspected. (See 1.2.2 and 3.3.1).4.5.2.1 Sampling pl
47、an: Four specimens of the form and dimensions specified in the applicable method paragraph shall be submitted for each batch acceptance test specified in 4.5.2. If one or more specimens fails to pass, the sample shall be considered to have failed.4.5.3 Periodic-batch-check inspection: Periodic-batch
48、-check inspection shall be made once every 2 years. Periodic-batch-check inspection shall consist of all the tests required by this specification (see table I).4.5.3.1 Sampling plan: Four specimens of the form and dimensions specified in the applicable method paragraph shall be submitted for each pe
49、riodic-batch-check test specified in 4.5.3, except for porosity and thermal conductivity (see 4.6.4 and 4.6.5). If one or more fails to pass, the sample shall be considered to have failed.4.5.4 Rejected batches: If a batch is rejected as the result of failing batch-acceptance inspection or periodic-batch-check inspection,
