1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2016 04 11 Editorial Separated out A3 and A5 T. Nover, EU 2004 12 07 Revised Updated format; Inserted 4. 2003 06 04 Activated B Hennessey Copyright 2016, Ford Global Technologies, LLC Page 1 of 4 THERMOPLASTIC ELASTOMER (TES) WSS-M2D50
2、7-A STYRENE BLOCK COPOLYMER 45 DUROMETER A HARDNESS, INTERIOR THERMOPLASTIC ELASTOMER (TES) WSS-M2D507-A2 STYRENE BLOCK COPOLYMER 60 DUROMETER A HARDNESS, INTERIOR THERMOPLASTIC ELASTOMER (TES) WSS-M2D507-A4 STYRENE BLOCK COPOLYMER 80 DUROMETER A HARDNESS, INTERIOR 1. SCOPE The materials defined by
3、these specifications are colored and U.V. stabilized thermoplastic elastomers based on Styrene block copolymers (TES) for interior use of nominal instantaneous Durometer A hardnesses ranging from 45 to 90 having good long term resistance to heat at temperatures up to 100 C. These materials can be co
4、nsidered as lower cost alternatives to TPV materials. 2. APPLICATION These specifications were released originally for materials used for general unpainted interior components which are black or color keyed such as seals, bezels, gaskets, edge strips, control knob covers, etc but excluding air bag c
5、overs. The materials can be processed by conventional thermoplastics molding techniques such as injection molding, 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 F
6、or Production Materials (WSS-M99P1111-A). 3.2 DYNAMIC MECHANICAL ANALYSIS (ASTM D 4065) Ford Motor Company, at its 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 d
7、amping curves established for initial approval shall constitute the reference standard and shall be kept on file 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. ENGINEER
8、ING MATERIAL SPECIFICATION WSS-M2D507-A/A2/A4 Copyright 2016, Ford Global Technologies, LLC Page 2 of 4 3.3 PREPARATION OF TEST SPECIMENS Unless otherwise specified, all tests shall be conducted on specimens die cut from injection molded plaques 150 x 100 x 2.0 +/- 0.2 mm. The plaques shall be molde
9、d 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 with the requirements of the performance specification WSS-M15P4-E and/or the
10、 relevant System Design Specifications (SDS). 507-A1 507-A2 507-A4 3.5 DENSITY, +/- 0.05 g/cm3 (ISO 1183, Method A/ ASTM D 792, Method A1) 1.18 1.20 1.12 3.6 HARDNESS, DUROMETER A (ISO 868, after 15 sec.) 45 +/- 5 60 +/- 5 77 +/- 5 3.7 TENSILE STRENGTH, MPa, min (ISO 37/ASTM D 412, Die C, 500 mm/min
11、 test speed. Measured Parallel to Flow) 1.5 3 6.3 3.7.1 Elongation at Break, % min (Test per para 3.7) 150 280 180 3.8 MODULUS AT 100% ELONGATION, +/- 20% (Test per para 3.7) 2.1 2.5 5.7 3.9 TEAR STRENGTH, kN/m, min (ISO 34, Method B, procedure a/ ASTM D 624, Die C) 3.9.1 Parallel to Flow 11 19 26 3
12、9.2 Perpendicular to Flow 19 23 30 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 13 19 31 3.10.2 24 h at 70 +/- 2 C 33 39 45 ENGINEERING MATERIAL SPECIFICATION WSS-M2D507-A/A2/A4 Copyright 2016, Ford Global Te
13、chnologies, LLC Page 3 of 4 507-A1 507-A2 507-A4 3.11 BRITTLENESS POINT, C max (ISO 812, Type B specimen/ ASTM D 2137, Method A) -30 -30 -30 3.12 OZONE RESISTANCE, Rating, max (FLTM BP 101-01, Method A at 20% elongation) 0 0 0 * NA = Not Applicable 3.13 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air
14、changes/h, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination.) Hardness Change, max +5 +5 +5 Tensile Strength Change, % max +30 +30 +30 Elongation Change, % max +30 +30 +30 3.14 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling pl
15、ate, post test conditioning 1 h and 16 h) Fog Number 80 min Formation of clear film, droplets or crystals is cause for rejection. 3.15 ODOR (SAE J1351/FLTM BO 131-01) Rating 2 max 3.16 FLAMMABILITY (ISO 3795/FMVSS 302) Burn Rate 100 mm/minute max The specimen size required for material approval is 3
16、55 x 100 x 2.0 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATION WSS-M2D507-A/A2/A4 Copyright 2016, Ford Global Technologies, LLC Page 4 of 4 3.17 WEATHERING RESISTANCE After exposure in accordance with 3.17.1 and 3.17.2 the material shall show no fading or color change in excess
17、of specified AATCC rating (AATCC Gray Scale for Evaluating Change in color, 10 Step). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and wate
18、r (ratio 5:95 by volume). All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final approval. 3.17.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, 488.8 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 2.0 +/- 0.2 mm thick, m
19、olded in smooth polished mold) 3.17.2 12 months Florida Rating 4 (FLTM BI 160-01, 5 south, under glass specimen size: 150 x 100 mm minimum 2.0 +/- 2.0 mm thick molded in smooth polished mold) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 4.1 RECYCLING CODE TES
