1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 12 N-STATUS No replacement named J. Crist, NA 2005 12 22 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1990 02 19 Released NB00I10043054016 L. Graham Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、 LLC Page 1 of 4 THERMOPLASTIC POLYURETHANE ELASTOMER (TPU), WSB-M4D735-A 15% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic polyester polyurethane alloy molding compound, which is glass fiber reinforced. T
3、his material is not UV stabilized and must be protected by an approved UV stabilized material. 2. APPLICATION This specification was released originally for material used as the insert on the bodyside molding which supports the vinyl molding. 3. REQUIREMENTS Material specification requirements are t
4、o be used for initial qualification of materials. 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). 3.4 MOLDING COMPOUND 3.4.1 Glass Fiber Content 13 - 17% (ISO 3451/1
5、, Method A, 1 g of pellets at 400 +/- 10 C) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, I
6、SO 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. 3.5.2 Density 1.20 - 1.30 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Ha
7、rdness, Durometer D 70 - 80 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D735-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Tensile Strength at Max Load, min 40 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm
8、specimen, 5 mm/min test speed) 3.5.5 Flexural Modulus, min 1.8 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.6 Shear Modulus at 23 C 490 - 810 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level belo
9、w 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 temperature interval -3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C min
10、imum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.7 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.7.1 At 23 +/- 2 C 10 kJ/m23.5.7.2 At 0 +/- 2 C 4 kJ/m23.5.7.3 At -40 +/- 2
11、C 3 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. 3.5.8 Heat Deflection Temperature, min (ISO 75/ASTM D
12、 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.8.1 At 1.82 MPa 70 C 3.5.8.2 At 0.45 MPa 90 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) ENGINEERING MATE
13、RIAL SPECIFICATIONWSB-M4D735-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.5.9.1 Tensile Strength Change +/- 25% (Test Method per para 3.5.4) 3.5.9.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before hea
14、t aging) 3.6 FLAMMABILITY (ISO 3795) 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. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this
15、specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 3.6-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.4% After 30 min at 120 C 0.3% ENGINEERING MATERIAL SPECIFICATIONWSB-M4D735-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
