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 2001 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.
3、A.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-7161 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 3909/2AIssued JUL 1985Revised OCT 1995Reaffirmed
4、JAN 2001Superseding AMS 3909/2(R) Cloth, Aramid2.25 Ounces per Square yard (76.3 g/m2), 250 Pounds Force per Inch (43,782 N/m)1. SCOPE:1.1 Form: This specification covers one weight and one strength of intermediate modulus aramid cloth.1.2 Application: See AMS 3909.1.3 Classification: 2.25 ounces pe
5、r square yard (76.3 g/m2) cloth with breaking strength not lower than 250 pounds force per inch (43,782 N/m) in the warp or filling direction.2. APPLICABLE DOCUMENTS: See AMS 3909.3. TECHNICAL REQUIREMENTS: 3.1 Basic Specification: The complete requirements for procuring the cloth described herein s
6、hall consist of this document and the latest issue of the basic specification, AMS 3909.3.2 Properties: Shall conform to the requirements of Table 1, 3.2.1, 3.2.2, 3.2.3, and 3.2.4.3.2.1 Weave: Shall be a plain weave, determined by visual examination.3.2.2 Color: Shall be as specified by purchaser.C
7、OPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling ServicesAMS 3909/2A SAE AMS 3909/2A- 2 -3.2.3 Width: Shall be 36.5 inches 0.5 (927 mm 13), determined in accordance with FED-STD-191, Method 5020.3.2.4 Age: Shall be not more than two years from date of
8、 manufacture of the yarn to date of delivery of the cloth.4. QUALITY ASSURANCE PROVISIONS: See AMS 3909.5. PREPARATION FOR DELIVERY: See AMS 3909.TABLE 1 - PropertiesRequirement ValueFED-STD-191Test MethodDenier 200Ply VisuallyWarp and Filling SingleTwist/inch (25.4 mm)Warp 4.0Filling(1) 0Yarns/inch
9、 (25.4 mm) min 5050Warp and Filling 40Weight, max 2.25 ounces per square yard (76.3 g/m2)5041Breaking Strength, min 5100Warp and Filling 250 pounds force per inch (43,782 N/m)Air Permeability at 0.5 inch (13 mm)Water Pressure100 to 175 cubic feet/minute per square foot(30.5 to 53.3 m3/minute per m2)
10、5450 and 4.5.1(1) A twist designation of zero signifies that no twist is to be added to the yarn producers twist as delivered.COPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling ServicesAMS 3909/2A SAE AMS 3909/2A- 3 -6. ACKNOWLEDGMENT: See AMS 3909.7. REJECTIONS: See AMS 3909.8. NOTES: See AMS 3909.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “P”COPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling Services
