1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 12 07 Revised Updated format; Inserted 4. 2003 06 04 Activated B Hennessey Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 3 THERMOPLASTIC ELASTOMER (TES) STYRENE BLOCK WSS-M2D507-A6 COPOLYMER 25 DU
2、ROMETER A HARDNESS 1. SCOPE The material defined by this specification is a nominally 25 Durometer A thermoplastic elastomer based on Styrene block copolymers (TES) for non-visible interior use having good long term resistance to heat at temperatures up to 100 C. 2. APPLICATION This specification wa
3、s released originally for materials used for elastic sealing lips over-molded onto recirculation-doors of HVAC-systems but can be used for other non-visible interior and under-hood applications. The materials can be processed by conventional thermoplastics molding techniques such as injection moldin
4、g, extrusion and blow-molding. 3. REQUIREMENTS 3.1 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 DYNAMIC MECHANICAL ANALYSIS (ASTM D 4065) Ford Motor Company, at i
5、ts option, may establish shear modulus/damping vs. temperature curves plotted for -50 to +170 C temperature range for material/parts supplied to this specification. The shear modulus and damping curves established for initial approval shall constitute the reference standard and shall be kept on file
6、 at the designated material laboratory. All samples shall produce shear modulus and damping curves that correspond to the reference standard when tested under the same conditions. 3.3 PREPARATION OF TEST SPECIMENS Unless otherwise specified, all test shall be conducted on specimens die cut from inje
7、ction molded plaques 150 x 100 x 2.0 +/- 0.2 mm. The plaques shall be molded according to ISO 294 and film gated along the upper 100 mm edge, and preceded by a 0.8 mm diameter pin gate. No annealing allowed, unless specified otherwise. 3.4 FINISHED PART REQUIREMENTS The finished part must conform wi
8、th the requirements of any relevant performance specification and/or the relevant System Design Specifications (SDS). ENGINEERING MATERIAL SPECIFICATIONWSS-M2D507-A6Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 3 3.5 DENSITY, +/- 0.05 g/cm3 1.04 (ISO 1183, M
9、ethod A/ASTM D 792, Method A1) 3.6 HARDNESS, DUROMETER A 25 +/- 5 (ISO 868, after 15 sec.) 3.7 TENSILE STRENGTH, MPa, min 1.1 (ISO 37 /ASTM D 412, Die C, 500 mm/min test speed. Measured Parallel to Flow) 3.7.1 Elongation at Break, % min 350 (Test per para 3.7) 3.8 MODULUS AT 100% ELONGATION, +/- 20%
10、 0.6 (Test per para 3.7) 3.9 TEAR STRENGTH, kN/m, min (ISO 34, Method B, procedure A/ ASTM D 624, Die C) 3.9.1 Parallel to Flow 8 3.9.2 Perpendicular to Flow 9 3.10 COMPRESSION SET, %, max (ISO 815, Large Type plied specimen/ASTM D 395, Method B, Type 1 plied specimen) 3.10.1 72 h at 23 +/- 1 C 40 3
11、.10.2 24 h at 70 +/- 2 C 60 3.11 BRITTLENESS POINT, C max -40 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.12 OZONE RESISTANCE, Rating, max 0 (FLTM BP 101-01, Method A at 20% elongation) 3.13 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. Unaged property value
12、s shall be determined at the time of the aged properties determination.) 3.13.1 Hardness Change, max +10 3.13.2 Tensile Strength Change, % max +10 3.13.3 Elongation Change, % max +10 ENGINEERING MATERIAL SPECIFICATIONWSS-M2D507-A6Printed copies are uncontrolled Copyright 2004, Ford Global Technologi
13、es, LLC Page 3 of 3 3.14 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 80 Formation of clear film, droplets or crystals is cause for rejection. 3.15 ODOR, max (SAE J1351/FLTM BO 131-01) Rating 2 3.16 FLAMMABILITY (ISO 3795/FMVSS 30
14、2 ) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. 4. GENERAL INFORMATION: The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 RECYCLING CODE TES
