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, 3.15 & 4 deleted 1981 11 04 Released AM1-6000-30 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 S
2、ILICONE ELASTOMER, EXTERIOR - WEATHERABLE ESB-M2D295-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by the specification is an exterior weatherable silicone elastomer. 2. APPLICATION This specification was released originally for material used for the keyless entry switch cover. 3. RE
3、QUIREMENTS 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). 3.2 COLOR Blue tinted 3.3 SPECIFIC GRAVITY 1.19 - 1.23 3.4 HARDNESS, DUROMETER “A“ 65 - 77 (ASTM D 2240) 3
4、.5 TENSILE STRENGTH, min 1,000 psi (ASTM D 412, Die “C“) (6.9 MPa) Elongation, min 400% 3.6 Modulus at 100% elongation, min 200 psi (ASTM D 412, Die “C“) (1.4 MPa) 3.7 TEAR STRENGTH, min 300 lb/in (ASTM D 624, Die “B“) (52.5 N/mm) 3.8 PAINT STAINING PER ESB-M9P4-A None 3.9 PLASTIC STAINING PER ESB-M
5、9P5-A None 3.10 HEAT AGING (ASTM D 573, 70 h at 100 +/- 2 C) Tensile Strength Change, max +35% Elongation Change, max -10% Hardness, Durometer “A“ Change, max +10 to -5 ENGINEERING MATERIAL SPECIFICATIONESB-M2D295-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2
6、 of 2 3.11 OZONE RESISTANCE ESB-M9P1-A (FLTM BP 101-01) 3.12 ACCELERATED WEATHERING Change in visual appearance shall not exceed rating 4 of the AATCC Gray Scale after 1,600 h exposure in an Atlas XW weatherometer per FLTM BO 101-01. 3.13 FLORIDA EXPOSURE After 12 months Florida exposure, 5 south di
7、rect weathering inland the material may exhibit slight dulling, but no cracking, checking, blistering or other evidence of degradation. The change in color shall not exceed rating 4 of the AATCC Gray Scale. 3.14 COLD FLEXIBILITY No cracks Using samples from para 3.11, 3.13, and 3.14 flex over a 1/2
8、in (12.7 mm) mandrel after conditioning for 6 h at -40 C. 3.15 PHYSICAL PROPERTIES Physical property requirements on molded parts must be specified on the engineering drawing or on the corresponding engineering specification, along with the locations on the part from which the test specimens are to be prepared. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COMPRESSION SET, max 15% (ASTM D 395, Method “B“, plied, 70 h at 102 +/- 3 C) 5.2 MOLD SHRINKAGE 0.020 - 0.040
