1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 11 16 N-STATUS No replacement named A. Pan, APA 2006 02 14 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1991 03 01 Released EP00E01089482000 P. Kuntze Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、LLC Page 1 of 4 POLYETHYLENE THEREPHTHALATE (PET) 35% GLASS WSK-M4D779-A2 FIBER/MICA REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 35% glass fiber/mica reinforced molding compound based on polyethylene terephthalate (PET). 2. APPLI
3、CATION This specification was released originally for material used for grill opening retainer. 3. REQUIREMENTS 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 M
4、OLDING COMPOUND 3.4.1 Melt Flow Rate, min 4.5 - 12 g/10 minutes (ISO 1133/ASTM D 1238, 280 C, 5 kg) The material shall be dried for 4 h minimum at 130 - 135 C in a mechanical convection oven immediately preceding the test. 3.4.2 Filler Content 33 - 37% (ISO 3451/2, glass fiber/mica at 750 +/- 25 C,
5、test portion 2.5 - 3.0 g) 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, ISO 3167) B. 120 x
6、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 1.50 - 1.56 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECI
7、FICATIONWSK-M4D779-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.3 Tensile Strength at Max Load, min 80 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) 3.5.4 Flexural Modulus, min 7.5 GPa (ISO 178/ASTM D 790M
8、, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 2.1 - 3.4 GPa (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. Spec
9、imen 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 +240 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.
10、6 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) 3.5.6.1 At 23 +/- 2 C 3.8 kJ/m23.5.6.2 At -40 +/- 2 C 2.5 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to
11、impact test. Low temperature testing shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min 200 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 1.82 MPa) 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573,
12、150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength Change +/- 30% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 15% (Test Method per para 3.5.6.1, specimens to
13、be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute ENGINEERING MATERIAL SPECIFICATIONWSK-M4D779-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1
14、 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 95 Formation of excessive amounts of clear film or droplets is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specificatio
15、n. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM D 696) Flow Direction 1.5 - 3.0-5/C Transverse to Flow 6.5 - 8.0-5/C 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 Flow Direction 0.3 - 0.55% Transver
16、se to Flow 0.7 - 1.20% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.07% . After 30 min at 120 C 0.07% 5.3 MELT VOLUME RATE 3.2 - 8.5 cm3/10 minutes (ISO 1133/ASTM D 1238, 280 C, 5 kg) The material shall be dried for min of 4 h at 130 - 135 C in a mechanical
17、 convection oven immediately preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min 230 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 0.45 MPa) 5.5 MELT TEMPERATURE 250 C(ISO 1218, Method B/ASTM D 789) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D779-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
