1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 25 N-STATUS No Replacement Named C. Mracna, NA 2004 08 19 Revised Para 3.0 inserted; para 3.3, 3.4 & 4 deleted 1985 09 18 Released PCR-DR893106-D Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 3
2、 RUBBER, SILICONE-BOOT ESP-M2D335-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a silicone rubber adaptable to high temperature and high flex service applications. 2. APPLICATION This specification was released originally for constant velocity joint boot mat
3、erial when high temperature resistance is necessary. 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 (ASTM D 3182) 3.1.1 Original Prop
4、erties Tensile Strength, min 8.0 MPa (ASTM D 412, Die C) . Elongation, %, min 500% Hardness, Durometer A 55 - 65 (ASTM D 2240) Tear Strength, min 29 kN/m (ASTM D 624, Die B) 100% Modulus, min 1.0 MPa (ASTM D 412, Die C) Specific Gravity 1.16 - 1.24 (ASTM D 792) 3.1.2 Heat Aged (ASTM D 573, 70 h at 1
5、50 C) Tensile Strength Change, max -15% Elongation Change, max -20% Hardness Change 0 to +10 ENGINEERING MATERIAL SPECIFICATIONESP-M2D335-A2 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 Tear Strength, min 25 kN/m 180 Bend Test No cracks 100% Modulus Chang
6、e -10 to +15% 3.1.3 Immersion in ASTM No. 1 Oil (ASTM D 471, 70 h at 150 C) Tensile Strength Change, max -25% Elongation Change, max -20% Volume Change 0 to -10% Hardness Change 0 to +10 180 Bend Test No cracks 3.1.4 Immersion in ASTM No. 3 Oil (ASTM D 471, 70 h at 150 C) Tensile Strength Change, ma
7、x -70% Elongation Change, max -65% Volume Change 0 to +55% Hardness Change 0 to -35 180 Bend Test No cracks 3.1.5 Immersion in Production Grease (See Note 1) (ASTM D 471, 336 h at 150 C) Tensile Strength Change, max -40% Elongation Change, max -40% Volume Change, max +15% Hardness Change -5 to +5 18
8、0 Bend Test No cracks 3.1.6 Water Immersion (70 h at Boiling) Tensile Strength Change, max -20% Elongation Change, max -25% Hardness Change -5 to +5 ENGINEERING MATERIAL SPECIFICATIONESP-M2D335-A2 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 Tear Strength
9、 min 30 kN/m 180 Bend Test No cracks 3.1.7 Low Temperature Brittleness No cracks (ASTM D 2137, 3 min at -40 C) 3.1.8 Compression Set, max 30% (ASTM D 395, 70 h at 150 C, button) 3.2 PRODUCTION PARTS Specific requirements for physical properties of parts shall be specified on the engineering drawing
10、 and/or engineering part specification. All critical areas with respect to these properties shall be clearly designated on the engineering drawings and are to be evaluated after the supplier has met the slab stock requirements and has been approved for production. Substance restrictions imposed by l
11、aw, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. 5. GENERAL INFORMATION The informat
12、ion given below is provided for clarification and assistance in meeting the requirements of this specification. NOTES: 1. For information on approved greases contact: Ford Motor Company Livonia Transmission Plant Supervisor, Materials, Fasteners and Friction Engineering 36200 Plymouth Road Mail Stop 29-B Livonia, Michigan 48151
