1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 13 N-STATUS No Replacement Named C. Mracna, NA 2004 08 24 Revised Removed ESB-M2D226-A2; para 3.0 inserted; para 3.1.1, 3.1.11, 3.3 and 4 deleted, para 3.2 revised 1976 05 04 Released AF1-6000-180 Printed copies are uncontrolled Copyri
2、ght 2009, Ford Global Technologies, LLC Page 1 of 3 EPDM RUBBER, EXTERIOR - COLOR PIGMENTED ESB-M2D226-A1 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification are sulfur cured EPDM elastomers suitable for injection molding, compression molding, or extrusion. 2. APPLICAT
3、ION This specification was released originally for materials used for stone deflectors, rub strips, and bodyside moldings, and may be specified for exterior applications requiring similar elastomeric properties. Material defined by ESB-M2D226-A1 designation corresponds to former ESB-M2D226, Type I o
4、r Type II designation as follows: ESB-M2D226-A1 replaces ESB-M2D226-A, Type I Existing drawings specifying ESB-M2D226-A, Type I or Type II, do not require revision to reflect this new classification. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part produ
5、cers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 MOLDED PLAQUE AND PART Unless otherwise indicated on the engineering drawing, the following requirements are applicable to test specimens prepared from molded test slabs and appropriate test specim
6、ens prepared from molded parts and assemblies having a thickness of 0.100 to 0.125 in (2.54 to 3.18 mm). When tests are required on molded parts or assemblies the location from which test specimens are to be taken will be shown on the engineering drawing. When no specific location for testing is spe
7、cified, test specimens shall be taken from random locations on the part where the dimensions, shape, and size permit fabrication of test specimens for evaluation by the specified method. 3.1.2 Tensile Strength, psi 1,200 (8.3) (MPa), min (ASTM D 412, Die “C“) Elongation, % min 300 Modulus at 100% -
8、Elongation, psi (MPa), min ENGINEERING MATERIAL SPECIFICATIONESB-M2D226-A1 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.1.3 Hardness, Durometer “A“ 70 - 80 (ASTM D 2240, instantaneous reading) 3.1.4 Tear Strength, lb/in 100 (17.5) (kN/m), min (ASTM D 62
9、4, Die “C“) 3.1.5 Compression Set, % max 50 (ASTM D 395, Method “B“, Plied, 22 h at 70 C) 3.1.6 Low Temperature Brittleness Pass at -40 C (ASTM D 746) 3.1.7 Ozone Rating ESB-M9P1-A (FLTM BP 101-01, ASTM D 412, any die at 100% elongation) 3.1.8 Paint Staining per None ESB-M9P4-A 3.1.9 Acrylic Stainin
10、g per None ESB-M9P4-A 3.1.10 Heat Aged (ASTM D 573, 70 h at 100 +/- 1 C) Hardness, Durometer “A“ +/- 10 Change Tensile Strength +/- 30 Change, % Elongation Change, % -55 to 0 3.2 SPECIAL REQUIREMENTS FOR UNPAINTED SURFACES EXPOSED TO EXTERIOR WEATHERING 3.2.1 Color Stability Rating 3 min per AATCC G
11、ray Scale for evaluating change in color after 1600 h weatherometer exposure per FLTM BO 101-01 and also after 1 year Florida exposure 5 south, direct weathering inland. No color tone change or surface crazing and no cracks when bent 90. Slight chalking and slight loss of gloss will be allowed provi
12、ded an acceptable appearance can be achieved with conventional car finish cleaning materials. ENGINEERING MATERIAL SPECIFICATIONESB-M2D226-A1 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.2.2 Blooming No evidence of excessive oily, waxy, or powdery bloom
13、ing. Test Method: Expose to 5 cycles of alternating cold and ambient temperatures. Each cycle shall consist of 2 h min at -40 +/- 1 C and 2 h min at room temperature. 3.2.3 Iridescence No evidence of excessive iridescence. Test Method: Expose to ozone per FLTM BP 101-01, unstressed static exposure f
14、or 24 h. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 FLEXURAL MODULUS, TANGENT, psi (MPa) (ASTM D 790, Method I, Procedure “B“) . At 23 +/- 2 C 2,500 (17.2) . At -29 +/- 1 C - - . At 70 +/- 1 C - 5.2 SPECIFIC GRAVITY 1.2 (ASTM D 792) 5.3 SHRINKAGE, In/In (mm/mm) . Mold to unpainted part 0.018 . Mold to painted part - -
