1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2016 08 31 N Status No usage or replacement L. Sinclair, NA 2004 11 22 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.4, 3.20 & 4 1993 05 26 Released C10301724 P Thomas Copyright 2016, Ford Global Technologies, LLC Page 1 of 4 THERMOPLASTIC
2、 ELASTOMER (TEO) WSD-M2D378-A6 POLYOLEFIN, EPDM RUBBER MODIFIED 66 DUROMETER A HARDNESS THERMOPLASTIC ELASTOMER (TEO) WSD-M2D379-A6 POLYOLEFIN, EPDM RUBBER MODIFIED 76 DUROMETER A HARDNESS NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specifications are thermoplastic elastome
3、rs of nominal instantaneous Durometer A hardnesses 66 and 76 having good long term resistance to heat at temperatures up to 125 C. Being thermoplastic, the material will soften and creep at temperatures exceeding 165 C. These materials provide low level fade resistance and have improved flow charact
4、eristics during injection molding. 2. APPLICATION These specifications were released originally for materials used for general interior components which are not color keyed and where there is no specific fade resistance requirements such as covered cup holders and pen holders on CDW27. The materials
5、 can be processed by conventional thermoplastics molding techniques such as injection molding, extrusion and blow-molding. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materi
6、als (WSS-M99P1111-A). 3.3 DYNAMIC MECHANICAL ANALYSIS Ford Motor Company, at its option, may establish shear modulus/damping vs. temperature curves plotted for -50 to +150 C temperature range for material/parts supplied to this specification. The shear modulus and damping curves established for init
7、ial 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. 3.5 PREPARATION OF TEST SPECIMENS Unless o
8、therwise 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 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 specif
9、ied otherwise. ENGINEERING MATERIAL SPECIFICATION WSD-M2D378-A6 WSD-M2D379-A6 Copyright 2016, Ford Global Technologies, LLC Page 2 of 4 378-A6 379-A6 3.6 DENSITY, +/- 0.05 g/cm3 (ISO 1183, Method A /ASTM D 792, Method A1) 0.97 0.96 3.7 HARDNESS, INTERNATIONAL (ISO 48/ASTM D 1415) 66 - 77 76 - 86 3.8
10、 HARDNESS, DUROMETER A (ISO 868/ASTM D 2240, instantaneous, plied-up specimen) 61 - 72 71 - 81 3.9 TENSILE STRENGTH, MPa, min (ISO R 527, type 2/ASTM D 412, Die C, 500 mm/min test speed. Measured Parallel to Flow) 3.3 4.4 3.9.1 Elongation at Break, %, min (Test per para 3.9) 160 200 3.10 MODULUS AT
11、100% ELONGATION, min (Test per para 3.9) 2.1 2.5 3.11 TEAR STRENGTH, kN/m, min (ISO 34, Method B, procedure a/ ASTM D 624, Die C, tear direction as below) 3.11.1 Parallel to Flow 11 15 3.11.2 Perpendicular to Flow 11 15 3.12 COMPRESSION SET, %, max (ISO 815, Large Type plied specimen/ASTM D 395, Met
12、hod B, Type 1 plied specimen) 3.12.1 22 h at 70 +/- 1 C 40 40 3.12.2 70 h at 80 +/- 1 C 60 60 3.13 BRITTLENESS POINT, C, max (ISO 812, Type B specimen/ ASTM D 2137, Method A) -60 -60 ENGINEERING MATERIAL SPECIFICATION WSD-M2D378-A6 WSD-M2D379-A6 Copyright 2016, Ford Global Technologies, LLC Page 3 o
13、f 4 378-A6 379-A6 3.14 OZONE RESISTANCE, Rating, max (FLTM BP 101-01, at 20% elongation) 0 0 3.15 HEAT AGING (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1,000 h at 125 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination.) Hardness Change, max + 10
14、+ 10 Tensile Strength Change, %, max +/- 30 +/- 30 Elongation Change, %, max +/- 30 +/- 30 3.16 IMMERSION IN OIL NO. 1 (ISO 1817/ASTM D 471, 168 h at 125 +/- 1 C) Hardness Change, max -25 -25 Tensile Strength Change, %, max -50 -50 Elongation Change, %, max -75 -75 Volume Change, %, max +90 +80 3.17
15、 IMMERSION IN OIL NO. 3 (ISO 1817/ASTM D 471, 168 h at 125 +/- 1 C) Hardness Change, max -35 -35 Tensile Strength Change, %, max -65 -60 Elongation Change, %, max -95 -95 Volume Change, %, max +160 +150 3.18 FOGGING (OPTIONAL) (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test condition
16、ing 1 h and 16 h) Fog Number, min 70 70 Formation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICATION WSD-M2D378-A6 WSD-M2D379-A6 Copyright 2016, Ford Global Technologies, LLC Page 4 of 4 3.19 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specime
17、n size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 378-A6 379-A6 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION, -
18、6/C (ASTM D 696) 270 230 5.2 MOLD SHRINKAGE (ISO 2577, 150 x 100 x 2.0 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C, mm/mm . Length 0.024 0.022 . Width 0.023 0.022 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 110 +/- 2 C . Length 0.009 0.009 . Width 0.007 0.006 5.3 HARDNESS, DUROMETER (ISO 868/ASTM D 2240, 5 second delay, plied-up specimen) 59 - 70 69 - 79 5.4 RECYCLING CODE TEO
