1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 20 N-STATUS No Replacement Named C. Mracna, NA 2004 08 25 Revised Removed Inactive ESW-M2D248-A; 3.0 inserted; 3.4.6, 3.5, 4 deleted 1974 06 24 Released CAD10-766166 Printed copies are uncontrolled Copyright 2009, Ford Global Technolog
2、ies, LLC Page 1 of 2 LAMINATE, MODIFIED BUTYL RUBBER/POLYESTER FABRIC ESW-M2D248-B NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification consists of a laminated cotton or polyester fabric impregnated with alternate layers of modified butyl rubber. 2. APPLICATION This spec
3、ification was released originally for material (4 ply) used for steering column lower shaft insulators. 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
4、). 3.1 RAW BUTYL RUBBER COMPOUND 3.1.1 Specific Gravity 1.14 - 1.18 (ASTM D 792) 3.1.2 Oscillating Disc Rheometer Rheometer data on any lot of material must fall within the limits of the master curve established at initial certification. This data must be kept on file in the suppliers quality contro
5、l laboratory. 3.2 MOLDED BUTYL RUBBER SLABS 3.2.1 Hardness - Durometer “A“ 45 - 55 (ASTM D 2240) 3.2.2 Tensile Strength, min 1,200 psi (8.3 MPa) (ASTM D 412, Die “C“) Elongation, min 400% 3.2.3 Tear Strength, min 150 lb/in (26 kN/m) (ASTM D 624, Die “C“) 3.2.4 Compression Set, max 50% (ASTM D 395, M
6、ethod “B“, 70 h at 125 +/- 2 C) ENGINEERING MATERIAL SPECIFICATIONESW-M2D248-B Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.2.5 Heat Aged (ASTM D 573, 70 h at 125 +/- 2 C) Hardness - Durometer “A“ Change +10 Tensile Strength Change, max -30% Elongation
7、Change, max -40% 3.2.6 Low Temperature Brittleness -40 C (ASTM D 746) 3.2.7 Ozone Rating 0 (FLTM BP 101-01), max 3.3 FABRIC POLYESTER 3.3.1 Weight, min 3.8 oz/yd2 (FLTM BN 106-01) (0.37 kg/m2) 3.3.2 Thread Count (ASTM D 1919) Warp 22 +/- 2 ends/in (25 mm) Fill 35 +/- 2 ends/in (25 mm) 3.3.3 Breaking
8、 Strength, min (ASTM D 2263) Warp 90 lb (400 N) Fill 90 lb (400 N) 3.4 LAMINATE 3.4.1 Thickness As specified on engineering drawing 3.4.2 Plies As specified on engineering drawing 3.4.3 Adhesion, min 25 lb (110 N) (ASTM D 413, Machine method, strip specimen) 3.4.4 Tensile Strength, min 750 psi (ASTM D 412, Die (5.2 MPa) “A“, 2 in (50 mm)/ min, 4 ply) 3.4.5 Heat Aged (ASTM D 573, 70 h at 125 +/- 2 C) Tensile Strength -25% Change, max
