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 2006 SAE InternationalAll rights reserved. No part of this publication may be
3、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: 724-776-4970 (outside USA)Fax: 724-
4、776-0790Email: custsvcsae.orgSAE WEB ADDRESS: http:/www.sae.orgGlass, Monolithic, Aircraft GlazingNOTICEThis document has been taken directly from U.S. Military Specification MIL-G-25667E, Amendment 1 and contains only minor editorial and format changes required to bring it into conformance with the
5、 publishing requirements of SAE technical standards. The initial release of this document is intended to replace MIL-G-25667E, Amendment 1. Any part numbers established by the original specification remain unchanged.The original Military Specification was adopted as an SAE standard under the provisi
6、ons 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 voting at the SAE
7、 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 qualified products li
8、sts (QPLs) has not been adopted by SAE and is not part of this SAE technical document.AEROSPACE MATERIAL SPECIFICATIONAMS-G-25667Issued JUL 1999Reaffirmed JAN 2006Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license f
9、rom IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 2 -1. SCOPE:1.1 Scope: This specification covers monolithic glass for use in aircraft glazing. (see 6.1.)1.2 Classification: Monolithic glass shall be furnished in the following types and classes, as specified by the procuring activity.Type I. Ready-cut, comm
10、ercial float or polished plate glass.Type II. Ready-cut, color-clear polished plate glass.Type III. Ready-cut, heat-absorbing polished plate glass.Type IV. Ready-cut, low expansion borosilicate and sodium aluminum borosilicate polished plate glass (coefficient of expansion from 45 to 65 x 10-7per de
11、gree centigrade (C) between 25 and 300C).Type V. Ready-cut, polished flat glass, chemically strengthened (coefficient of expansion from 70 to 95 x 10-7per degree C).NOTE: The characteristics of type V glass permit a variety of break patterns to be obtained. Thespecific production application will de
12、termine the process best suited for the intended use.Class A. Flat.Class B. Curved.2. APPLICABLE DOCUMENTS: The following publications, of the issues 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
13、 Publications: Available from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.PPP-B-591 Boxes, Fiberboard, Wood-CleatedPPP-B-601 Boxes, Wood, Cleated-PlywoodPPP-B-621 Boxes, Wood, Nailed and Lock-CornerMIL-P-116 Preservation, Methods ofMIL-L-10547 Lin
14、ers, Case, WaterproofMIL-STD-129 Marking for Shipment and StorageMIL-STD-130 Identification Marking of U.S. Military PropertyMIL-STD-1186 Cushioning, Anchoring, Bracing, Blocking, and Waterproofing; With Appropriate Test MethodsFED-STD-406 Plastic, Methods of TestingCopyright SAE International Provi
15、ded by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 3 -2.2 Uniform Classification Committee: Available from Uniform Classification Committee, 202 Chicago Union Station, Chicago, IL 60606.Uniform Freight Clas
16、sification Rules2.3 The Franklin Institute: Available from Franklin Institute, Benjamin Franklin Parkway at 20th Street, Philadelphia, PA 19103. Orders should specify the title cited above, pages 583 through 617 of Journal Franklin Institute, Volume 230, 1940.)Proposed Standard Solar-radiation Curve
17、s for Engineering Use3. REQUIREMENTS: 3.1 Preproduction: This specification makes provisions from preproduction inspection (see 4.3).3.2 Material: The material shall be specially selected aircraft glazing quality ground and polished glass, or equivalent. The glass blanks before grinding and polishin
18、g may be formed by any manufacturing process. Types I through IV glass may be annealed, semitempered, or fully tempered, as specified. Type V to be processed on the basis of specific product application. Glass shall be furnished in Class A or B as specified.3.3 Stress: Semitempered, fully tempered,
19、glass shall have a minimum average stress or modulus of rupture equal to that of a reference sample meeting the requirements of the purchase order or applicable drawing when tested in accordance with 4.5.3. Unless otherwise specified (See 6.2), the average stress or modulus of rupture of reference s
20、amples shall be as follows:a. 1/4-inch thick semitempered glass shall have an average stress within the limits of 1,400 to 1,900 m per inch center tension or flexural strength of 18,000 to 21,000 pounds per square inch (psi).b. 1/4-inch thick fully tempered glass shall have a minimum average stress
21、of approximately 2,800 m per inch center tension or a minimum flexural strength of 25,000 psi.c. 0.085-inch thick chemically strengthened glass shall have an average stress of 1,400 to 4,200 m per inch center tension or flexural strength between 12,000 psi to 70,000 psi as required.NOTE: Flexural st
22、rength will remain the same with different thicknesses, however, the center tension will vary with thickness.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 4 -3.3.1 Cent
23、er tension reference sample: For purposes of this specification, a sample shall be a specimen from the first production lot with a predetermined stress meeting the requirements of the purchase order or applicable drawings for degree of stress.3.3.1.1 Modulus of rupture reference sample: For purposes
24、 of this specification a sample shall be five (5) test specimens processed concurrently with the first lot and having a flexural strength or modulus of rupture meeting the requirements of the purchase order or applicable drawings for minimum strength.3.4 Finish: Annealed glass shall have all edges s
25、eamed or ground with no sharp edges. Semitempered, fully tempered, and chemically strengthened glass shall have all edges seamed or ground with no sharp edges prior to treating.3.4.1 Low-reflection coatings: Unless otherwise specified (see 6.2), low-reflection coatings shall not be applied to the gl
26、ass units.3.5 Dimensions: The linear dimensions and nominal thickness of flat glass units, and the thickness, size, and contour of curved glass units shall be as specified in applicable drawings or specifications. Standard nominal thicknesses are shown in table I.3.5.1 Tolerances: Unless otherwise s
27、pecified (see 6.2), allowable tolerances in thickness and linear dimensions for all types of annealed glass shall be as shown in table I. Unless otherwise specified (see 6.2), all types of tempered or chemically strengthened glass shall be allowed a tolerance of 1/32 inch in thickness, and 1/16 inch
28、 in length and width. Unless otherwise specified (see 6.2), curved glass units shall not vary from the specified contour by more than 1/8 inch when placed on either a male or female peripheral checking fixture. Measurements for conformance to dimensional requirements shall be as specified in 4.5.4.3
29、6 Original luminous transmittance: The original luminous transmittance of the glass shall be equal to or greater than the requirements in table II when tested in accordance with 4.5.5.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permi
30、tted without license from IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 5 -TABLE I. Nominal thickness and tolerance in thickness and dimensions of annealed glassTABLE II. Original luminous transmittance3.7 Original haze: The percentage of haze for all types of glass shall not exceed 1.0 percent for thickness
31、es up to 5/8 inch, and 1.5 percent for thicknesses from 5/8 inch to 1-1/4 inches, when tested in accordance with 4.5.5.3.8 Solar-radiation transmittance: This requirement applies only to type III glass. The radiation transmittance for energy from the sun shall be equal to or less than that in table
32、III, when tested in accordance with 4.5.6.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 6 -TABLE III. Solar-radiation transmittance for type III glass3.9 Optical inspec
33、tion: Relaxed optical requirements shall be permitted only in noncritical (optical-inspection-free) areas. Unless otherwise specified by the contract or order, noncritical areas shall be as follows:a. Flat and curved annealed glass, types I through IV: A border extending 1 inch from the edge of the
34、daylight opening.b. Flat and curved tempered, semitempered, and chemically strengthened glass, types I through V: A border extending 1 inch from the edge of the daylight opening, and the area within a 2-inch radius around the tong marks, where applicable.3.9.1 Minor optical defects: The total number
35、 of minor defects in the glass unit shall not exceed the limit for the applicable thickness as specified in table IV when examined in accordance with 4.5.2.1. Minor optical defects are inclusions in the glass such as bubbles and seeds from 1/32 to 1/16 inch unless the bubble is elongated, in which c
36、ase the length would be held to 3/32 inch maximum; and fine striae, cord, and light surface scratches from 3/16 to 3/8 inch in length. Light surface sleeks, and minor defects in a noncritical area shall be disregarded. In addition, minor optical defects smaller than the minimum allowable dimension s
37、hall be disregarded unless they are so grouped as to form an objectionable pattern or impair visibility in any critical area as described in 3.9 or specified by the contract or purchase order. The presence of any defects larger than the maximum allowable dimension for minor defects, other than in a
38、noncritical area, shall not be permitted. Stones or other foreign inclusions of any size shall not be permitted.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 7 -TABLE I
39、V. Allowable minor defects3.9.2 Optical deviation: The optical deviation requirements for all types of glass shall be as approved by the procuring activity and specified in applicable drawings, specifications, or procurement documents when tested in accordance with 4.5.2.2.3.9.3 Optical distortion:
40、Limits of optical distortion shall be as approved by the procuring activity and specified in applicable drawings, specifications, or procurement documents. Testing shall be in accordance with 4.5.2.3.3.10 Identification of product: Types I through V glass units shall be marked in accordance with MIL
41、STD-130 by etching or sandblasting according to the following form. Unless otherwise specified (see 6.2), the marking shall not extend more than 5/8 inch from the edge of the daylight opening, nor be more than 3 inches in length. The identification marking shall be so located as to be legible when
42、the glass unit is installed. Location of the marking shall be specified on the contract drawing. If not specified, marking location shall be at the discretion of the manufacturer.3.11 Workmanship: Workmanship shall be in accordance with the best practice for high-grade aircraft glass. The finished g
43、lass shall be free from bubbles, striae, or other defects which would render the material unfit for use in service.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 8 -4. Q
44、UALITY 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 herein. Except as otherwise specified in the contract or order, the supplier may u
45、se 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 set forth in the specification where such inspections are deemed necessary to ass
46、ure supplies and services conform to prescribed requirements.4.2 Classification of inspections: The inspection requirements specified herein are classified as follows:a. Preproduction inspection (see 4.3).b. Quality conformance inspection (see 4.4).4.3 Preproduction inspection: Preproduction tests s
47、hall be performed only on the preproduction sample and shall consist of all the examinations and tests specified herein except as specified in the procurement documents (see 6.2).4.3.1 Preproduction sample: A preproduction sample shall be prepared using the same methods proposed for the preparation
48、of subsequent production lots of glass. Preproduction samples which do not meet requirements of this specification shall be subject to rejection and return to the supplier.4.4 Quality conformance inspection: Quality conformance inspections for acceptance of the glass shall consist of all the tests r
49、equirements herein for which necessary sampling techniques and method of testing are specified.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-G-25667 SAE AMS-G-25667- 9 -4.4.1 Individual Tests: Each glass unit shall be subject to the following tests
