1、SAE Technical 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 applicability and suitability for any particular use, including any patent infringementarising therefrom, is the s
2、ole 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 yourwritten comments and suggestions.Copyright 1990 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.SA.SAERINGS, S
3、EALING, PHOSPHONITRILIC FLUOROELASTOMER (FZ)Aviation Fuel-Resistant75 - 85 SHORE AAMS-7284/2Issued 1990-07-01AEROSPACEMATERIALSPECIFICATIONSAESAEThe Engineering SocietyFor Advancing MobilityLand Sea Air and Space400 Commonwealth Drive, Warrendale, PA 15096-0001INTERNATIONALSubmitted for recognition
4、as an American National Standard1. SCOPE:1.1 Form: This specification covers phosphonitrilic fluoroelastomer (FZ) in theform of molded rings.1.2 Application: Primarily for use in aircraft fuel systems operating from 55to +150C (-67 to +302F).1.3 Classification: Rings having a nominal hardness of 80
5、durometer Shore A, orequivalent.2. APPLICABLE DOCUMENTS: See AMS-7284.3. TECHNICAL REQUIREMENTS:3.1 Basic Specifications: The complete requirements for procuring the sealingrings described herein shall consist of this document and the latest issueof the basic specification AMS-7284.3.2 Properties: S
6、hall conform to the following requirements, determined inaccordance with test methods listed in AMS-7284:3.2.1 As received:3.2.1.1 Hardness, Shore A, or equivalent 80 53.2.1.2 Tensile Strength, minimum 1200 psi (8.27 Mpa)3.2.1.3 Elongation, minimum 100%Copyright SAE International Provided by IHS und
7、er license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAESAEAMS-7284/23.2.1.4 Specific Gravity Preproduction Value 0.023.2.1.5 TR10-50, maximum -51C(-60F)3.2.1.6 Glass Transition, Onset, maximum -55C(-67F)3.2.2 Dry Heat Resistance:(70 hours at 1500C (302
8、0F)3.2.2.1 Hardness Change, Shore A 53.2.2.2 Tensile Strength Change 15%3.2.2.3 Elongation Change 20%3.2.2.4 Compression Set, 25% deflection% of original deflection, maximumO-ring Cross Section0.060 to 0.110 inch (1.52 to 2.79 mm) inclusive 40%Over 0.110 inch (Over 2.79 mm) 30%3.2.3 Fuel Resistance:
9、 Ref. Fuel A, Ref. Fuel B,70 hours at 107C (225F) ASTM D 471 ASTM D 471 AMS-30223.2.3.1 Tensile Strength Changemaximum -20% -35% -35%3.2.3.2 Elongation Changemaximum -10% -15% -15%3.2.3.3 Volume Change +5 to +15% +10 to +25% +10 to +20%3.2.3.4 TR10-50, maximum -52C -52C -51C(-62F) (-62F) (-60F)3.2.4
10、 Fuel Resistance, Ref. Fuel B, ASTM D 47170 hours at 150C (302F)3.2.4.1 Tensile Strength Change, maximum -35%3.2.4.2 Elongation Change, maximum -15%3.2.4.3 Volume Change +10 to +25%3.2.5 Differential Soak Test:3.2.5.1 70 hours at RT, Ref. Fuel A, % Swell AD1then 70 hours at RT, Ref. Fuel B, % Swell
11、AD2Differential Swell (AD2- AD1), maximum 7%Volume Swell, 48 hours dryout at RT +1 to 3%- 2 -Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAEAMS-7284/23.2.5.2 70 hours at RT, Ref. Fuel B, % Swell AD
12、3then 70 hours at RT, Ref. Fuel A, % Swell AD4Differential Swell, (AD3-AD4), maximum 5%Volume Swell, 48 hours dryout at RT +1 to 4%3.3 Part Numbers: Shall consist of the following:1. The letters “AMS“ and the specification number.2. A dash followed by the appropriate dash number from AS568.Example 1
13、 Example 2AMS-7284/2-214 AMS-7284/2-3634. QUALITY ASSURAMCE PROVISIONS: See AMS-7284.5. PREPARATION FOR DELIVERY: See AMS-7284.6. ACKNOWLEDGMENT: See AMS-7284.7. REJECTIONS: See AMS-7284.8. NOTES: See AMS-7284.- 3 -Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-
