1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 20 N-STATUS No Replacement Named C. Mracna, NA 2004 07 23 Revised Para 3.0 inserted; para 3.3, 3.4 & 4 deleted 1973 07 25 Released E3C-223 E. J. Duda Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1
2、of 2 FLUOROELASTOMER DIAPHRAGM, ESE-M2D240-A 70 DUROMETER “A“ HARDNESS NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high heat, fuel and oil resistant fluoroelastomer. 2. APPLICATION This specification was released originally for material used as a diaphragm
3、in thermactor check valve. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 SLAB STOCK 3.1.1 Original Properties Hardness - Durometer “A“ 65 - 75
4、(ASTM D 2240) Tensile Strength, min 12.4 MPa (ASTM D 412) Elongation, min 130% (ASTM D 412) 3.1.2 Heat Aged (ASTM D 865, 70 h at 249 +/- 3 C) Hardness - Durometer “A“ Change +/- 10 Tensile Strength Change -10 to +25% Elongation Change, max -30% 3.1.3 Immersion in ASTM No. 1 Oil (ASTM D 471, 70 h at
5、149 +/- 1 C) Hardness - Durometer “A“ Change +/- 5 Tensile Strength Change -10 to +20% Elongation Change -15 to +10% Volume Change +2% ENGINEERING MATERIAL SPECIFICATIONESE-M2D240-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.1.4 Immersion in ASTM No.
6、3 Oil (ASTM D 471, 70 h at 149 +/- 1 C) Hardness - Durometer “A“ Change -5 to 0 Tensile Strength +/- 15% Elongation Change -20 to +10% Volume Change 0 to +7% 3.1.5 Compression Set, max 25% (ASTM D 395, Method “B“, 70 h at 149 C) 3.1.6 Cold Test at -40 C No cracks (FLTM BP 106-03, 70 h conditioning)
7、permitted 3.2 PARTS 3.2.1 Original Hardness - Micro 65 - 75 IRHD (ASTM D 1415) 3.2.2 Heat Aged (70 h at 249 C) Hardness Change +/- 10 IRHD 3.2.3 Immersion in ASTM No. 1 Oil (70 h at 149 C) Hardness Change +/- 5 IRHD Volume Change, max +2% 3.2.4 Immersion in ASTM No. 3 Oil (70 h at 149 C) Hardness Change 0 to -5 IRHD Volume Change 0 to +7%
