1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 11 N-STATUS No Replacement Named A. Pan, AP 2006 04 11 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1991 09 20 Released NB00I10043054126 E.P. Francis Printed copies are uncontrolled Copyright 2009, Ford Global Technologies
2、, LLC Page 1 of 4 THERMOPLASTIC POLYURETHANE ELASTOMER (TPUR), WSB-M4D831-A 65 DUROMETER D HARDNESS MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyester based thermoplastic polyurethane elastomer molding compound with 65 durometer D hardne
3、ss, that is capable of being painted at 121 C for exterior application when properly supported. 2. APPLICATION This specification was released originally for material used for flexible painted body color or bright grilles. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material s
4、uppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The follo
5、wing dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.4.
6、2 Density 1.2 - 1.3 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.4.3 Hardness, Durometer D 60 - 70 (ISO 868/ASTM D 2240, 15 s dwell) 3.4.4 Tensile Strength at Max Load, min 16 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) ENGINEERING MATERIAL SPECI
7、FICATIONWSB-M4D831-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 3.4.4.1 Elongation at Break, min 200% (Test Method according to para 3.4.4) 3.4.5 Flexural Modulus, min 650 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specime
8、n, 64 mm support span) 3.4.6 Shear Modulus at 23 C 230 - 380 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each te
9、mperature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.4.7 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 25
10、6, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.4.7.1 At 23 +/- 2 C No break 3.4.7.2 At -40 +/- 2 C 3.5 kJ/m23.4.7.3 At 0 +/- 2 C 11 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature t
11、esting shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. 3.4.8 Heat Deflection Temperature, min 35 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 0.45 MPa) 3.4.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000
12、h at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.9.1 Tensile Strength at Break Change +/- 25% (Test Method per para 3.4.4) 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 35
13、5 x 100 x 1.0 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATIONWSB-M4D831-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 4 3.6 FOGGING (FLTM BO 116-03) Fog Number, min 60 Formation of excessive amounts of clear film or droplets is cause f
14、or rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.0-5/C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection
15、 molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 1.0 - 1.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 1.0 - 1.8% . After 30 minutes at 120 C 1.2 - 2.0% 5.3 HEAT DEFLECTION TEMPERATURE, min 24 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2
16、 mm specimen. At 1.82 MPa) 5.4 APPLICABLE SPECIFICATIONS FOR NAAO APPLICATIONS 5.4.1 ESB-M16J14* - Paint 5.4.2 ESB-M2P105* - Paint Performance 5.4.3 ESB-M5P10* - Metallize, Plastic Parts, First Surface *Use current release level. Contact the applicable Materials Engineering office for the latest update information. 5.5 RECYCLING CODE SAE or TPUR TPUR OPTIONAL ENGINEERING MATERIAL SPECIFICATIONWSB-M4D831-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4
