1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 25 N-STATUS No Replacement Named C. Mracna, NA 2004 07 15 Revised Para 3.0 inserted; para 3.1, 3.2, 3.19 & 4 deleted 1980 04 10 Released AL1-6000-25 W.J.K. Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC P
2、age 1 of 3 THERMOPLASTIC ELASTOMER, STYRENE POLYOLEFIN ESB-M2D296-A BLOCK COPOLYMER - INJECTION AND EXTRUSION COMPOUND - ELECTRICAL GRADE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a styrene polyolefin block copolymer, injection molding and extrusion compoun
3、d. The material is flexible with a maximum continuous service temperature of 135 C and intermittent service temperature capabilities up to 204 C. 2. APPLICATION This specification was released originally for material used for molded electrical connector insulators on the 2.3 L turbo engine. 3. REQUI
4、REMENTS All tests shall be conducted on finished parts when possible. Otherwise, tests shall be conducted on 0.075 +/- 0.005 in (1.90 +/- 0.13 mm) thickness molded slabs or ribbon extrusions made from production stocks. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part p
5、roducers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 FLAMMABILITY, max 4 in (101 mm)/ (FLTM BN 24-2, without the lot sampling plan) min In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of
6、 the above maximum value. 3.4 COLOR Natural (unless otherwise specified on the engineering drawing) 3.5 SPECIFIC GRAVITY 0.885 - 0.930 (ASTM D 792) 3.6 HARDNESS, DUROMETER “A“ 65 - 75 (ASTM D 2240, instantaneous reading) 3.7 TENSILE STRENGTH, min 1,200 psi (8.3 MPa) (ASTM D 638, Type IV specimen) 3.
7、8 ELONGATION, min 450% (ASTM D 638, Type IV specimen) ENGINEERING MATERIAL SPECIFICATIONESB-M2D296-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.9 TEAR RESISTANCE, min 150 lb/in (26 kN/m) (ASTM D 624, Die “C“) 3.10 LOW TEMPERATURE BRITTLENESS, max -50
8、C (ASTM D 746) 3.11 HEAT RESISTANCE Test Method: Expose a minimum of three 0.075 x 1 x 2 in (1.90 x 25 x 50 mm) samples for 7 days at 135 +/- 1 C for each test listed in para 3.11.1 to 3.11.4 below. Cool to 23 +/- 2 C before conducting the indicated tests. Weight change shall be reported as the perc
9、ent change in weight measured before and after heat exposure. 3.11.1 Weight Change, max -10% 3.11.2 180 C Bend Test No cracks when material is bent back against itself 3.11.3 Hardness, Durometer “A“, Change, max +/- 5 (ASTM D 2240, instantaneous reading) 3.11.4 Color Stability The material shall not
10、 stain, exhibit color change or change in hue in accordance with rating 2 minimum of the AATCC Gray Scale for evaluating change in color (10 step). 3.12 DIELECTRIC STRENGTH, min 600 V/mil (24 kV/mm) (ASTM D 149, 0.075 in (1.90 mm) sample) 3.13 PAINT STAINING There shall be no visible stain produced
11、on the painted panel beyond the boundaries of the test specimen. Test Method: Securely attach a test specimen 0.075 x 1 x 2 in (1.90 x 25 x 50 mm) to a 3 x 3 in (75 x 75 mm) painted panel. (The panel shall be painted with ESB-M32J100 quality light colored enamel per FLTM BI 103-02.) Expose the assem
12、bly in the fluorescent sunlamp cabinet as described in FLTM BO 115-01 for 48 h. Remove the test specimen from the panel and reexpose the painted panel in the fluorescent sunlamp cabinet for 24 h. Remove panel and reexamine for staining. 3.14 FADE (SAE J 1885) Shall not stain, exhibit color change or
13、 change in hue, in accordance with rating 2 of the AATCC Gray Scale for evaluating change in color (10 step) after 80 SFH exposure. 3.15 ODOR Not disagreeable 3.16 OZONE RATING Must meet ESB-M9P1-A (FLTM BP 101-01) ENGINEERING MATERIAL SPECIFICATIONESB-M2D296-A Printed copies are uncontrolled Copyri
14、ght 2009, Ford Global Technologies, LLC Page 3 of 3 3.17 H2S STAINING (FLTM AN 102-01) The material shall correspond to a rating of 5 minimum when compared to the AATCC Chart for measuring the transference of color. 3.18 HEAT RESISTANCE, Finished Parts There shall be no evidence of melting, dripping
15、 or other dimensional change which would interfere with part function or fit. Test Method: Condition the parts for 30 min in a mechanical convection oven maintained at 204 +/- 1 C (or as otherwise specified on the engineering drawing). 5. GENERAL INFORMATION The information given below is provided f
16、or clarification and assistance in meeting the requirements of this specification. 5.1 MOLD SHRINKAGE 0.010 - 0.015 in/in (mm/mm) 5.2 SOLVENT AND CHEMICAL RESISTANCE (Typical) Fluid Exposure Time Retention % Volume & Temperature Tensile% Elongation% Increase Brake fluid 72 h at 100 C 95 95 -15 Ethyl
17、ene glycol 72 h at 100 C 55 60 3 Methanol 72 h at 100 C 75 90 -3 10W-40 Motor oil 72 h at 100 C 20 40 90 Silicon oil 72 h at 100 C 100 100 -5 Gasoline 72 h at 100 C 20 10 16 Transmission oil 72 h at 100 C 15 60 100 5% Salt water 72 h at 100 C 100 85 2 Freon 72 h at 50 C 73 72 - ASTM #2 oil 18 h at 121 C 20 30 -
